MECKLENBURG COUNTY
Land Use and Environmental Services Division
Code Enforcement
Memo
Date:
To:
From:
Re:
April 21, 2009
All customers
Jim Bartl, Director of Code Enforcement
2009 NC State Building Code effective dates
I’m writing to remind customers that North Carolina is transitioning to the new 2009 NC Building Code family.
In March, 2008, the NC Building Code Council (BCC) adopted the 2009 NC State Building Code family. In
doing so, the BCC set various effective dates for the implementation of the new Code, as follows:
 NC Electrical Code effective date was June 1, 2008, except for 3/11/08 amendment items 3 (relates
to wet location receptacles; see amended NEC 406.3) and 6 (relates toAFCI protection; see amended
NEC 210.12), which had effective dates of January 1, 2009.
 NC Building, Fire Prevention, Residential, Mechanical, Plumbing, Fuel Gas and Energy Codes, with
effective date of January 1, 2009, and a transition period of January 1, 2009 through June 30, 2009.
This meant a project could use either the 2006 or 2009 Code in the period January 1, 2009 through
June 30, 2009. However, on or after July 1, 2009, the new 2009 NC Building Code family must be
used.
Since the BCC prescribed transition period is quickly drawing to a close, customers should take care to assure
they comply with the Department policy on code transitions, as follows.
Department policy on the transition period
Regarding the absolute cutoff date for use of the 2006 code, given the extremely long transition period provided
by the BCC, we see no reason to extend this with a further grace period after June 30, 2009. Consequently,
permits issued after June 30, 2009 must comply with the 2009 NC State Building Code.
It is very important that professionals monitor their work closely to carefully determine when a project’s design
basis must switch to the new NC Codes to comply with the above transition periods and the Department’s policy
about them. While state law requires us to issue a permit on any project compliant with the effective code, the
burden is on the owner’s team to estimate when your permit will be issued. Projects not permitted by June 30,
2009 must comply with the 2009 NCSBC, regardless of when they entered the system for permitting.
Feel free to contact me or any of the trade or plan review chiefs, if you have questions on the effective dates of the
NC State Building Code.
PEOPLE  PRIDE  PROGRESS PARTNERSHIPS
700 North Tryon Street  Charlotte, North Carolina  (704) 336-2831  Fax (704) 336-3839
www..meckpermit.com
MECKLENBURG COUNTY
Land Use and Environmental Services Agency
Code Enforcement
Memo
Date:
April 21, 2009
TO:
From:
RE:
all contractors
Jim Bartl
Code Compliance Report
For over 11 years, the Department has collected data on inspection failures, based on a system of
defect codes, which are recorded at the time of inspection. Those reports are summarized for
presentation to the Building Development Commission on a quarterly basis.
Attached is a copy of the most recent Code Compliance Report Data Summary for the period
January 1, 2009 to March 31, 2009. This report highlights the most frequent code defects sighted in
each of the trades.
Since July 1, 2001, detailed contractor code defect data has been available on the Department web
site (go to the contractors’ tool box at www.meckpermit.com). Questions on the data may be
directed to the appropriate trade chief or Kathleen Rivers (704-336-3545).
Prior to July 1,2002, we also held hard copies of individual contractor defect reports at the Building
Development Center front desk for contractor pickup. Given the huge amount of paper involved,
and the fact that the vast majority of these reports were not picked up, this service was discontinued.
However, Hal Marshal Center Document Control staff will provide assistance to contractors on
downloading their reports over the counter or by phone (704-336-3830).
PEOPLE  PRIDE  PROGRESS  PARTNERSHIPS
700 North Tryon Street  Charlotte, North Carolina  (704) 336-2831  Fax (704) 336-3839
www.meckpermit.com
January 1, 2009 through March 31, 2009
Mecklenburg County Code Enforcement Department
Code Compliance Report
Data Summary
1. Building Inspections Top Fifteen Code Defects
task
item # item
# defects % of total
framing
111
fire stopping/draftstopping
237
4.38%
final
105
call clerk
183
3.39%
mono slab
108
need soil compaction test
171
3.16%
framing
197
other defects listed on job
167
3.09%
footing
108
need soil compaction test
158
2.92%
frame
105
call clerk
156
2.88%
final
197
other defects listed on job
140
2.59%
final
118
handrail construction
127
2.35%
final
104
not ready for inspection
110
2.03%
framing
109
foundation anchors missing
95
1.76%
frame
104
not ready for inspection
94
1.74%
frame
195
previous list incomplete
73
1.35%
final
123
exterior grading incorrect
67
1.24%
final
121
insulation missing or exposed
60
1.11%
final
114
flashing/caulking
59
1.09%
TOTAL
1897/5404 35.10%
Note 1: all 04 (incomplete not ready for inspection) total 350 or 6.47% of total bldg code defects noted
Note 2: Rough O2's = 35.95% of total; Final 02's = 27.75% of total
2. Electrical Inspections Top Fifteen Code Defects
task
item # item
# defects % of total
final
30
improper wiring method
172
4.10%
final
25
improper overcurrent protection
158
3.76%
final
9
grounding
155
3.69%
final
W8
defects created by others
154
3.67%
final
4
not ready for inspection
117
2.78%
final
19
label panel
111
2.64%
final
55
GFCI general
99
2.36%
final
5
too many defects to list
78
1.86%
final
10
bonding
78
1.86%
final
6
defect not corrected
74
1.76%
final
31
cables subject to damage
64
1.53%
final
65
AFCI
58
1.38%
final
11
incorrect size or wire type
52
1.24%
final
41
improper joints or terminations
50
1.19%
rough
W8
defects created by others
48
1.15%
TOTAL
2068/4871 34.98%
Note 1: all 04 (incomplete not ready) total 231 or 5.5% of total electrical code defects noted
Note 2: Rough O2's = 13.3% of total; Final 02's = 55.99% of total
1
3. Mechanical Inspections Top Fifteen Code Defects
task
item # item
# defects
final
H01
damage caused by others
189
final
Z99
other defect or no code
127
gas test
G03
test not to code or bad gauge
108
final
A04
not ready for inspection
100
final
P1
primary/secondary drain missing
74
final
Z98
ext'g cond'tn not code compliant
66
final
F01
flue clearance
65
final
E8
eqpt installation instructions
64
final
A13
need ladder
62
final
G03
gas test not to code
57
rough
H01
damage caused by others
53
final
F02
flue material installed incorrectly
52
final
Z96
approval withheld for other trades
43
final
F06
flue termination incorrect
38
final
G09
gas line regulator missing
38
TOTAL
1136/2765
% of total
6.84%
4.59%
3.90%
3.60%
2.68%
2.39%
2.35%
2.32%
2.24%
2.06%
1.92%
1.88%
1.55%
1.37%
1.37%
41.09%
Note 1: all 04 (not ready for inspection) total 145 or 5.24% of total mechanical code defects noted
Note 2: Rough O2's = 17.5% of total; Final 02's = 66.55% of total
4. Plumbing Inspections Top Fifteen Code Defects
task
item # item
rough
B31
piping test missing/incorrect
final
E31
handicapped regulation missing
final
H01
damage by others
final
D31
T&P drain missing or incorrect
final
41
not ready for inspection
wtr distr
B31
piping test missing/incorrect
final
C21
pipe insulation missing
final
E71
fixture installed incorrect
final
J41
existing condition not to code
final
B51
piping support missing/incorrect
rough
B51
piping support missing/incorrect
final
C71
equipment missing or incomplete
final
C91
cleanouts missing or incorrect
final
D21
water heater pan missing
rough
B81
vent piping or AAV size incorrect
TOTAL
# defects
74
60
56
55
49
40
34
33
33
27
26
23
20
20
20
570/1112
% of total
6.65%
5.39%
5.04%
4.95%
4.40%
3.60%
3.06%
2.96%
2.96%
2.43%
2.34%
2.07%
1.80%
1.80%
1.80%
51.26%
Note 1: all 04 (not ready for inspection) total 77 or 6.92% of total plumbing code defects noted
Note 2: Rough O2's = 18.17% of total; Final 02's = 57% of total
2
Building Consistency Meeting
Residential
Date: 1/7/09 Recorder and minutes prepared by: Danny Wooten/Jeff Griffin
Staff present: Jeff Griffin, Tim Taylor, Danny Wooten, Ron Featherstone, Steve Kellen,
Harold Sinclair, Walt Nash, Darrell McAllister, Rob Ellis, Jimmy Butler, Russ Fisher,
David Williams, Mike Brown, Don Sprinkle, Mike Creech, Sam Caulder, Steve Pearson,
Mark Wyte, Paul Cupp, TW Anthony, Eric Brown, Michael Johnson, Ron Dishman,
Andrew DeMaury, Andy Herring.
Public present: Daniel McBride (Cunnane Group); Greg Sloan/Hans Kasak (Ryland
Homes); Kevin Ratliff (Griffin Masonry); Charles Sofinowski/Darren Price (M/I
Homes); Lou Salvador/Jeff Dunn (DR Horton); Bob Mckee (Ryan Homes); Jason
Whitener (Southern Tradition Homes); Matthew Klapheke (L&M Const); Darek
Burns (Essex Homes); Dave Reynolds (Bldrs, 1st source); A. Wynn Yates
(Yates/Starnes Eng); David R. .Schwieman (DR Schwieman, Inc); Bill Green/David
Piddock (Barefoot & Co.); Joseph Murray (McCar Homes); Wayne Carter (J&B
Development); Mary Nash/Jeff Neudecker (Centex Homes); Brad Crysler (John
Wieland); Doug Tino (DE Tino, Inc); Beverly Newell (Sixteen Penny Const).
Topics/Subject
Decisions/Conclusions/Actions
Old
Business
New 2009
Codes
We received all the 2009 code books on January 21st and we are at this
time taking any plans for review under the new codes. Books are
available at: http://www.iccsafe.org/.
New
Business
Buildings
located close to
transformers
Garage
definition
Residential
plan review
thresholds
changed
Electrical Department has come out with an interpretation on
transformer location related to building structures. This is more of an
electrical issue but several builders have called about this new
interpretation and a handout was passed out to the group including an
invitation to a lunch discussion on the issue. This issue is still being
discussed but may have some impact on wall ratings and openings on
certain jobsites. The full Department policy can be found on
www.meckpermit.com under electrical services listed on the left side of
that main page.
Question has been raised about situation with an attached or detached
structure that may have access for vehicle parking. A new interpretation
was handed out dealing with the issue of spaces that have roll up
overhead doors more than 6’ wide that have the potential to be used as a
garage area. These spaces will need to be constructed as garage per
attached interpretation.
Being April 1st 2009 the thresholds for residential projects will be
expanded slightly to include detached accessory structures more than
400 square feet or more than 1 story in height. Also any residential
structure that has an additional floor level added will require plan
review (see attached customer notice).
Building Consistency Meeting
Residential
Date: 2/11/09 Recorder and minutes prepared by: Danny Wooten/Jeff Griffin
Staff present: Ron Featherstone, Jeff Griffin, Tim Taylor, Danny Wooten, Steve Kellen,
Harold Sinclair, Walt Nash, Darrell McAllister, Rob Ellis, Russ Fisher, David Williams,
Mike Brown, Don Sprinkle, Sam Caulder, Steve Pearson, Eric Brown, Ron Dishman,
Andrew DeMaury, Andy Herring, Mort Robins, Darren Bishop, Randy Newman, Ralph
Vernon, Mike Jackson, Steve Lineberger, Ken Turull, Steve Miller, Greg Walsh, Barry
Human, Gene Morton, George Rogers, Tony Kiser, David Ries, Steve Honeycutt.
Public present: Greg Sloan/Hans Kasak (Ryland Homes); Kevin Ratliff/Rob Merrell
(Griffin Masonry); Charles Sofinowski (M/I Homes); Bob Mckee (Ryan Homes);
Jason Whitener (Southern Tradition Homes); Darek Burns (Essex Homes); Dave
Reynolds (Bldrs, 1st source); Wynn Yates (Yates/Starnes Eng); David R. .Schwieman
(DR Schwieman, Inc); Chad Huges (Barefoot & Co.); Wayne Carter (J&B
Development); Mary Nash (Centex Homes); Scott Dellinger (Drafting & Design)
Beverly Newell (Sixteen Penny Const); Terry Cleary (Meeting Street Homes); Kevin
Adkins (Regent Homes); Brad Crysler (John Weiland Homes); Dennis Adams
(CPCC); David Little (Banister Homes); Joe Stewart (Stewart Builders).
Topics/Subject
Decisions/Conclusions/Actions
Old
Business
None
New
Business
Remodel vs.
new
construction
Trade defect
codes handout
Townhouse
dormer
windows
Issue has been discussed within the Department and with the Industry
related to a residential remodeling job that ends up tearing down more
of the original structure than what’s left. A threshold limit was
established as to when we would permit as a new structure vs. a
remodeling job, an interpretation was passed out and is attached to the
minutes for review.
Discussed issue of current code defects used by field inspectors to
indicate failed items on the electronic record. This list is being updated,
expanded and the Department is looking at providing more useful tools
in working with this data. Input from the industry has been requested
and a handout of the current codes and change recommendations of staff
was distributed at the meeting. More information to include a final list
to follow.
Issue brought up about dormer windows installed on townhouses closer
than 4’ from property line in the protected roof sheathing area (option
for not building parapet wall between units). There is nothing in the
Code that allows this application the language is very specific under
section R317.2.2 item #2 exception where it states “a parapet is not
required when the roof is covered with a minimum class C roof
covering and the roof decking or sheathing is of a non-combustible
material or approved fire-retardant-treated wood for a distance of 4
feet”. Adding a dormer window on top with or without a rated side wall
can still add fire load with the burning of a vinyl siding or other
covering material in this area. All dormer windows must be kept out of
this 4’ roof protected area or a parapet wall between will be required. In
addition there was a question about the overhang (eaves) on that dormer
window into the 4’ protected area. This overhang is not the same as the
section R302 requirement for 3’ fire separation distance and projection
allowances. Due to the new requirement to protect townhouse soffits
there are no additional requirements and nothing prohibiting a 12” eave
overhang.
Handrail height
vs. guards
2006 Code
2009 Code
Issue brought up in regards to the 2006 Code that was mandatory from
July 1, 2008 to today and an item that was approved by mistake in the
this 2006 Code. That item had to do the mounting height of the guard on
an open side of a stair. This had created a problem when you use the
guard as a handrail also, handrail could be as low as 30” but guards
were raised to 34”(in previous codes even back under CABO NC has
allowed guards to be 30” to match the start of the handrail mounting
height). This has been corrected in the 2009 code and we are allowing
currently the installation on open stairs sides to match the allowances
under the 2009 residential code.
ICC sprinkler
appeal
New Code
classes at
CPCC
Electrical
transformer
policy
60” standing
surface at tub
to glazing
Appeal to the IRC approval of sprinkler systems was made by the
National Home Builders Association to the appeal board of ICC in their
December meeting. The board heard the argument not on the basis of
the technical requirement but on the procedural aspects of the approval,
based upon that the appeal was denied. See attached information from
ICC website. This will mean that the issue will go forward to the State
of NC in their review of the 2012 Code.
Classes on the changes to the 2009 code will be held at CPCC being 1
ever month for the next 4-5 months. This class is designed for 3 hours
of classroom instruction and then a 3 hour field frame class. For code
officials this will qualify for the 6 hours of continued education, see this
link for information on the class from CPCC website (Crowder
Construction Institute) http://www.cpcc.edu/codeinspector/courseschedule. Go to the bottom of the page and you will see the schedule for
class COD 8000.
Question was asked about the status of this interpretation from our
electrical Department. This item was reviewed with them and is still
being drafted any input or inquiries can be directed to Joe Weathers
Chief Electrical inspector or Angela Miller or Gary Mullis Asst. Chief’s
at 704/336-3523.
Issue was brought up by the industry as a reminder of a Code change we
have had since going to the International codes starting with the 2002
NC residential code with a January 1st, 2003 mandatory enforcement
date. This change effected where you measure from and is no longer
from the drain inlet (per previous CABO Code) but is anywhere from
the standing or walking surface. See commentary picture below that
illustrates this issue from section R3084 item #5.
Remodel vs.
new
construction
There has been a concern in the past about remodeling that ends up with
a structure being torn down past a responsible point where it should be
considered a new building structure. The topic was discussed with
feedback requested to establish these thresholds. An interpretation on
the issue is being drafted and should be available at the next consistency
meeting.
New FD tables
The 2009 code has new foundation tables that start with plain masonry
construction thru reinforced masonry to a single table for concrete (plain
concrete and reinforced). These tables R404.1.1(1-5) were reviewed in
the meeting to include a new limitation on crawl space wall unbalanced
fill which is 48” and a new bolting requirement for basement walls as
found under section R404.1.
Foundation walls that meet all of the following shall be considered
laterally supported:
1. Full basement floor shall be 3.5 inches (89 mm) thick concrete slab poured tight against the
bottom of the foundation wall.
2. Deleted
3. Bolt spacing for the sill plate shall be no greater than 36 inches (914 mm).
4. Deleted.
5. Where foundation walls support unbalanced load on opposite sides of the building, such as a
daylight basement, the building aspect ratio, L/W, shall not exceed the value specified in Table
R404.1(3). For such foundation walls, the rim board shall be attached to the sill
with a 20 gage metal angle clip at 24 inches (610 mm) on center, with five 8d nails per leg, or an
approved connector supplying 230 pounds per linear foot (3.36kN/m) capacity.
Maximum
vertical rise in
stairways
There is a new section of code that limits the vertical rise in a stairway
this language is found in section R311.5.4.
R311.5.4 Landings for stair ways. There shall be a floor or landing at the top and
bottom of each stair way.
Exception: A floor or landing is not required at the top of an interior flight of stairs,
provided a door does not swing over the stairs.
A flight of stairs shall not have a vertical rise greater than 12 feet (3658 mm) between
floor levels or landings.
The limitation covers all types of stairs and therefore will apply to
specialty stairs was well such as circular or spiral stairs. Recent site
issue found a spiral stairway that had been constructed with more than a
12’ vertical rise and there is no exception under the code for these
specialty stairways, landings would be required.
Building Consistency Meeting
Residential
Date: 3/4/09 Recorder and minutes prepared by: Danny Wooten/Jeff Griffin
Staff present: Ron Featherstone, Jeff Griffin, Tim Taylor, Danny Wooten, Steve Kellen,
Harold Sinclair, Walt Nash, Russ Fisher, David Williams, Mike Brown, Don Sprinkle,
Sam Caulder, Steve Pearson, Eric Brown, Ron Dishman, Andrew DeMaury, Andy
Herring, Randy Newman, Steve Lineberger, Steve Miller, George Rogers, David Ries,
Michale Johnson, Patrick Biddy, Mark Wyte, Scott Linhardt.
Public present: Hans Kasak (Ryland Homes); Charles Sofinowski (M/I Homes); Bob
Mckee (Ryan Homes); Dave Reynolds (Bldrs, 1st source); Wynn Yates (Yates/Starnes
Eng); David R. .Schwieman (DR Schwieman, Inc); Wayne Carter (J&B
Development); Terry Cleary (Meeting Street Homes); Brad Crysler (John Weiland
Homes); Dennis Adams (CPCC); Lou Salvador (DR Horton); Ben Brookhart
(Timberline Homes); Daniel Mcbride (Cunnane Group); John Meeks (Apple Blossom
Insulators); Brendan Shea (True Homes); Chad Ritter (Intelligent Design
Engineering); Joe Stewart (Stewart Builders).
Topics/Subject
Decisions/Conclusions/Actions
Old
Business
None
New
Business
Sealed crawl
space permits
Move-on floor
insulation
Sheathing vs.
framing
inspection
Question was asked about requirements for permits on existing
structures when going to a closed crawl system. A Department formal
interpretation requirement is attached to these minutes for review.
Issue in the field came up in regards to moving an existing structure
from one location to a new site and new foundation. Since the crawl
space and all aspects of that new area are being looked at should the
floor system be insulated to meet the code requirements at time of
setup? Since the cavity is open and exposed sitting on a new foundation
the floor system should be insulated as required by Chapter 11 of the
NC residential code? No other area of the move on has to be insulated
as long as cavities not opened up such as removing sheetrock from a
wall or ceilings.
Concern brought up specifically concerning an insulation inspection that
when the history of a job was checked by an inspector, shows a previous
open sheathing inspection (sheathing had failed). Contractor did not
request another sheathing inspection to correct items that he was turned
down for on the first inspection. Contractor is not required to call back
in another sheathing inspection if the structure is ready and the next
inspection is a frame check then all sheathing related items he was
failed for should be addressed at that frame inspection. Any inspector
that would go behind and finds that frame has passed in this case should
conclude that the sheathing had passed. Inspectors should not try and
enter a sheathing result since sheathing inspections are handled
differently and result in a $50 charge each time a contractor request one.
Handrails at
winder treads
Sales centers
New code
classes
Fastening
schedule
Fireplace chase
with shed roof
There is a change in the codes (section R311.5.6) related to the location
of a required handrail up a flight of stairs in the residential code. Under
previous versions of the code on a winder flight of stairs the handrail
had to be on the narrow side of the stairs. Under the NC2006 & NC2009
code the handrail can be on any side of a flight of stairs regardless of
having a winder tread as long as continuous.
Additional issue discussed with sales centers located in a home and
what has to meet the NC Accessibility Code. Once a sales center is
located inside a residence even for temporary usage that area has to be
fully accessible to include an interior bathroom on that level. Only the
areas that are being used by sales staff have to be modified for public
access to include door sizes and hardware, kitchens and bedrooms are
not required to be modified.
Several classes are scheduled at CPCC dealing with the new residential
codes. These classes will be held over the next couple of months (next
class scheduled for March 12th. The classes are split with 3 hours of
classroom instruction and 3 hours of a field frame class, this is open to
all at a cost of $61.00 and enrollment information can be found by going
to CPCC’s Crowder construction institute.
Discussed the new fastening schedule that is in the 2009 code which
will address gun nails but will prohibit the use of clipped head nails, see
attached schedule for review.
Question was asked about fireblocking inside a fireplace wood frame
chase which is typical with a direct vent factory fireplace. Under
previous codes fireblocking was required at 10’ vertical heights this
would require some chases to have a break at each 10’ level, this has
been removed in the ’06 and ’09 codes. The only concern with the
exterior fireplace/shed roof type chase now is that if it passes a floor
level there needs to be fireblocking to prevent entering into the floor
assembly, this is an issue specific to open web floor trusses since
conventional framing with have a band that will also act as a fireblock.
As long as fire cannot enter into the floor assembly then the shingled
roof line at the top of the chase is ok without any additional
fireblocking.
Consistency Meeting
January 7th, 2009
INSPECTORS
JOE WEATHERS
704-336-5379
ANGELA MILLER
704-432-1775
GARY MULLIS
704-336-3521
JOSEPH.WEATHERS@MECKLENBURGCOUNTYNC.GOV
ANGELA.MILLER@MECKLENBURGCOUNTYNC.GOV
GARY.MULLIS@MECKLENBURGCOUNTYNC.GOV
SARRAH KELLY
JIM ELLIS
DAVID SELLERS
704-719-7114
704-336-3810
704-719-7048
CONTRACTORS
DANNY SIMPSON
704-821-5200
JIM LONG
704-553-7552 ext.113
BRUCE SAIMES
704-596-2525
RONALD JUDSON
704-814-4733
RUSSELL SANTOS
704-821-5200
PATRICK KOSMELA 704-426-0047
DREW GOAN
704-821-5200
MIKE TISDELL
704-243-3639
TRINA BRASWELL
704-821-4485
MATT CURRAN
CELL: 704-363-0234
CELL: 704-361-2226
CELL: 704-634-3020
CELL: 704-400-1048
CELL: 704-506-7319
CELL: 704-400-5067
CELL: 704-999-3771
CELL: 704-320-6820
CELL: 704-309-7442
csimp12@aol.com
jim.long@fryeelectric.com
bsaims@andersenservices.com
rljudson@carylelectrical.com
russellsantos@carolina.rr.com
pat@obelectric.com
agoan@carolina.rr.com
Tisdell-electric@carolina.rr.com
eandhelectrical@yahoo.com
ATTENDANCE AT PREVIOUS MEETING
Present: Joe Weathers, Angela Miller, Gary Mullis, Andy Scoggins, Jim Ellis, Sarah Kelly, David Sellers,
Bruce Saimes, Ronald Judson, Patrick Kosmela, Mike Tisdell, Trina Braswell, Matt Curran, Buster Beaver,
Danny Blackwelder, Scott Blackwelder, Chris Dellinger, Ryan Steed, Roger Ward
CODE ISSUES FROM PREVIOUS MEETING

Jan 1st begins enforcement of new AFCI and Weather Resistant Receptacle
Requirements

Lock outs – NEC 422.31 B – must stay in place without lock
Need to be attached behind deadfront

Existing NM cables that are sleeved on the exterior may remain in place, all new wiring
must be rated for wet location

Closet recessed incandescent luminaires must be enclosed type even if compact
fluorescent bulbs are installed, make sure listing is followed for lamp type

Comments were received about perceived retaliation by inspectors, we do not tolerate
this behavior and encourage open communication between all our staff and customers

Equal potential grounding is required on hot tub replacements

Pool bonding points are to be evenly spaced

Utility transformer clearances are still being worked on, Duke Energy has offered
another standard, we will do a mailing when policy change is finaled
AGENDA ITEMS

Tamper proof receptacles are required for floor receptacles

210.52 G 1 & 2 and 406.11; Detached garages at dwellings are an accessory of the
dwelling and will need tamper proof receptacles.
Unfinished basements will require tamperproof receptacles

CSSC, gas line appliance connector, does not need to be bonded.

Tracpipe PS-11 is a pre-sleeved underground, rooftop, or exterior wall pipe system. It
is black in color and needs to be bonded per the manufacturer’s instructions.

AFCI 210.12 expansion applies in assisted living apartments and extended stay hotels,
with cooking; they both meet the definition of dwelling unit.

Appliance companies can not connect hardwired appliances, they may only attach the
cord set to the appliances, all else is contractor’s work and is to be permitted

Labeling & listing requirements are again being questioned; for approval be sure that all
options are given and allowed – listed and labeled equipment/field evaluation by a test
lab/design professionals evaluation/wired to meet methods of NEC

Transformer policy sent out to contact base by email, brown bag lunch on the 12th,
11:30 – 1:00

AFCI to be installed basically in all heated areas of the residence except kitchens and
baths

Other
Next Meeting: February 11th, 09
Consistency Meeting
Feb 4th, 2009
CONTRACTORS/DESIGN PROFESSIONALS
DANNY SIMPSON
704-821-5200
JIM LONG
704-553-7552 ext.113
BRUCE SAIMES
704-596-2525
RONALD JUDSON
704-814-4733
RUSSELL SANTOS
704-821-5200
PATRICK KOSMELA 704-426-0047
DREW GOAN
704-821-5200
MIKE TISDELL
704-243-3639
TRINA BRASWELL
704-821-4485
ED JACKSON
704-599-4377
CELL: 704-363-0234
CELL: 704-361-2226
CELL: 704-634-3020
CELL: 704-400-1048
CELL: 704-506-7319
CELL: 704-400-5067
CELL: 704-999-3771
CELL: 704-320-6820
CELL: 704-309-7442
INSPECTORS
JOE WEATHERS
704-336-5379
ANGELA MILLER
704-432-1775
GARY MULLIS
704-336-3521
csimp12@aol.com
jim.long@fryeelectric.com
bsaims@andersenservices.com
rljudson@carylelectrical.com
russellsantos@carolina.rr.com
pat@obelectric.com
agoan@carolina.rr.com
Tisdell-electric@carolina.rr.com
eandhelectrical@yahoo.com
ejackson@jordanskala.com
JOSEPH.WEATHERS@MECKLENBURGCOUNTYNC.GOV
ANGELA.MILLER@MECKLENBURGCOUNTYNC.GOV
GARY.MULLIS@MECKLENBURGCOUNTYNC.GOV
SARRAH KELLY
JIM ELLIS
DAVID SELLERS
704-719-7114
704-336-3810
704-719-7048
ATTENDANCE AT PREVIOUS MEETING
Present: Angela Miller, Gary Mullis, David Sellers, Ronald Judson, Jim Long, Ed Jackson, Lou Villanella,
Mike Kale, Mark Caldwell
CODE ISSUES FROM PREVIOUS MEETING

Tamper proof receptacles are required for floor receptacles

210.52 G 1 & 2 and 406.11; Detached garages at dwellings are an accessory of the dwelling and
will need tamper proof receptacles.
Unfinished basements will require tamperproof receptacles

CSSC, gas line appliance connector whip, does not need to be bonded.

Tracpipe PS-11 is a pre-sleeved underground, rooftop, or exterior wall pipe system. It is black in
color and needs to be bonded per the manufacturer’s instructions.

AFCI 210.12 expansion applies in assisted living apartments and extended stay hotels, with cooking;
they both meet the definition of dwelling unit.

Appliance companies can not connect hardwired appliances, they may only attach the cord set to
the appliances, all else is contractor’s work and is to be permitted

Please have contractors/customers inquiring as to why power as not been turned on or meter has
not been set call document and inspections @ 704-336-3830

Loads on residential general lighting circuits; # of circuits (NOT LOAD ON CIRCUIT) are determined
by 3va x SF/ circuit breaker amps; typical is 800 sf for 20 amp & 600 sf for 15 amp, loading must
follow 210.21 & 23.

We need to expand the participation in these meetings. We would like to have more commercial
project representation as well. We hope these meetings will keep us all on the same page and
enable us to prepare for equitable solutions to our industry challenges in a timely matter. Please
pass this information to your peers.

Code Defect list

CAFCI info

Bonding of building metal NEC 250.104 (C)

Conductor I. D. NEC 310.12

GS rewrite to have no permit at $5k level

Grouping of mains NEC 230.71 & .72
AGENDA ITEMS

NEC 406.8 B 2 b; HVAC service receptacle?

NEC 404.14 E and 406.3 F; dimmer on switched receptacle?

517.13; redundant grounding on patient care switches

NEC 250.24 C 1; grounded conductor routed with phase conductor

RIF

Other
Next Meeting: April 1st, 09
Consistency Meeting
March 4th, 2009
CONTRACTORS/DESIGN PROFESSIONALS
DANNY SIMPSON
704-821-5200
JIM LONG
704-553-7552 ext.113
BRUCE SAIMES
704-596-2525
RONALD JUDSON
704-535-3263
RUSSELL SANTOS
704-821-5200
PATRICK KOSMELA 704-426-0047
DREW GOAN
704-821-5200
MIKE TISDELL
704-243-3639
TRINA BRASWELL
704-821-4485
ED JACKSON
704-599-4377
BRIAN WINKLER
704-376-2999
RIED SAWYER
704-309-9541
SCOTT LOWERY
704- 357-9333
LEE TEETER
704-376-2999
CELL: 704-363-0234
CELL: 704-361-2226
CELL: 704-634-3020
CELL: 704-506-7319
CELL: 704-400-5067
CELL: 704-999-3771
CELL: 704-320-6820
CELL: 704-309-7442
CELL: 704-771-9435
csimp12@aol.com
jim.long@fryeelectric.com
bsaims@andersenservices.com
rljudsonsr@gmail.com
russellsantos@carolina.rr.com
pat@obelectric.com
agoan@carolina.rr.com
Tisdell-electric@carolina.rr.com
eandhelectrical@yahoo.com
ejackson@jordanskala.com
brianw@tegpa.com
rsawyer@caryleelectrical.com
leet@tegpa.com
INSPECTORS
JOE WEATHERS
704-336-5379
ANGELA MILLER
704-432-1775
GARY MULLIS
704-336-3521
JOSEPH.WEATHERS@MECKLENBURGCOUNTYNC.GOV
ANGELA.MILLER@MECKLENBURGCOUNTYNC.GOV
GARY.MULLIS@MECKLENBURGCOUNTYNC.GOV
SARRAH KELLY
JIM ELLIS
DAVID SELLERS
704-719-7114
704-336-3810
704-719-7048
CODE ISSUES FROM PREVIOUS MEETING

Number of Services and Mains on multi tenant properties; NEC 230.2

Listed fireplace inserts are on the market with unit modules being cord connected.
Be sure electrical system connection is accessible, cord is covered under listing.

No 60% policy/rule for remodel & repair. See interpretation policy online under heading,
Fire/Remodel Jobs

Transformer update; policy revisions, web expansion, future meetings

Meg Test: Please research the job and make sure permits were in place at the time the work was
covered up. Our policy is to allow meg test only if permit was issued before the work was covered
up.

Labeling & listing requirements are again being questioned; for approval be sure that all options are
given and allowed – listed and labeled equipment/field evaluation by a test lab/design professionals
evaluation/wired to meet methods of NEC

Transformer policy sent out to contact base by email, brown bag lunch on the 12th, 11:30 – 1:00

AFCI to be installed basically in all heated areas of the residence except kitchens and baths
AGENDA ITEMS

Number of Services and Mains on multi tenant properties; NEC 230.2

Listed fireplace inserts are on the market with unit modules being cord connected.
Be sure electrical system connection is accessible, cord is covered under listing.

No 60% policy/rule for remodel & repair. See interpretation policy online under heading,
Fire/Remodel Jobs (see attachment)

Transformer update; policy revisions, web expansion, future meetings

Meg Test: Please research the job and make sure permits were in place at the time the work was
covered up. Our policy is to allow meg test only if permit was issued before the work was covered
up.

Please have contractors/customers inquiring as to why power as not been turned on or meter has
not been set call document and inspections @ 704-336-3830

Loads on residential general lighting circuits; # of circuits (NOT LOAD ON CIRCUIT) are determined
by 3va x SF/ circuit breaker amps; typical is 800 sf for 20 amp & 600 sf for 15 amp, loading must
follow 210.21 & 23.

We need to expand the participation in these meetings. We would like to have more commercial
project representation as well. We hope these meetings will keep us all on the same page and
enable us to prepare for equitable solutions to our industry challenges in a timely matter. Please
pass this information to your peers.

Code Defect list (see attachment)

Other
Next Meeting: March 4th, 09
MECKLENBURG COUNTY
Land Use and Environmental Services Agency
Code Enforcement
CODE
INTERPRETATION
Mechanical/Plumbing
Code Volume Reference: NC Mechanical Code & NC Administrative Code
Code Chapter Reference: 607.6 & 206
Subject:
Alternative Materials/Design
Effective Date:
December 1, 1995
Prepared/Revision Date:
March 2009
CODE:
[B] 607.6 Horizontal assemblies. Penetrations by air ducts of a floor, floor/ceiling assembly or the ceiling membrane of
a roof/ceiling assembly shall be protected by a shaft enclosure that complies with Section 707 and Sections 716.6.1
through 716.6.3 the International Building Code or shall comply with Sections 607.6.1 through 607.6.3.
[B] 607.6.1 Through penetrations. In occupancies other than Groups 1-2 and 1-3, a duct constructed of approved
materials in accordance with Section 603 that penetrates a fire-resistance-rated floor/ceiling assembly that connects not more than two stories is permitted without shaft enclosure protection provided that a listed fire damper
is installed at the floor line or the duct is protected in accordance with Section 712.4 of the International Building Code. For air transfer openings, see Exception 7 to Section 707.2 of the International Building Code.
Exception: A duct is permitted to penetrate three floors or less without a fire damper at each floor provided it
meets all of the following requirements.
1. The duct shall be contained and located within the cavity of a wall and shall be constructed of
steel not less than 0.019 inch (0.48 mm) (26 gage) in thickness.
2. The duct shall open into only one dwelling unit or sleeping unit and the duct system shall be continuous from the unitto the exterior of the building.
3. The duct shall not exceed 4-inch (102 mm) nominal diameter and the total area of such ducts
shall not exceed 100 square inches (0.065 m ) for any 100 square feet (9.3 m ) of the floor area.
4. The annular space around the duct is protected with materials that prevent the passage of flame
and hot gases sufficient to ignite cotton waste where subjected to ASTM E 119 time-temperature
conditions under a minimum positive pressure differential of 0.0 I inch (2.49 Pa) of water at the
location of the penetration for the time period equivalent to the fire-resistance rating of the construction penetrated.
5. Grille openings located in a ceiling of a fire-resistance-rated floor/ceiling or roof/ceiling assembly shall be protected with a listed ceiling radiation damper installed in accordance with Section
607.6.2.
2
Continued:
2
[B] 607.6.2 Membrane penetrations. Ducts and air transfer openings constructed of approved materials, in accordance
with Section 603, that penetrate the ceiling membrane of a fire-resistance-rated floor/ceiling or roof/ceiling assembly
shall be protected with one of the following:
1. A shaft enclosure in accordance with Sections 707 of the International Building Code .
2. A listed ceiling radiation damper installed at the ceiling line where a duct penetrates the ceiling of a fireresistance-rated floor/ceiling or roof/ceiling assembly.
3. A listed ceiling radiation damper installed at the ceiling line where a diffuser with no duct attached penetrates the
cei1ing of a fire-resistance-rated floor/ceiling or roof/ceiling assembly.
[B] 607.6.2.1 Ceiling radiation dampers. Ceiling radiation dampers shall be tested in accordance with UL 555C
and installed in accordance with the manufacturer's installation instructions and listing. Ceiling radiation dampers
are not required where either of the following apply:
1. Tests in accordance with ASTM E 119 have shown that ceiling radiation dampers are not necessary in order to
maintain the fire-resistance rating of the assembly.
2. Where exhaust duct penetrations are protected in accordance with Section 712.4.1.2 of the International Building Code and the exhaust ducts are located within the cavity of a wall, and do not pass through another dwelling
unit or tenant space.
[B] 607.6.3 Nonfire-resistance-rated floor assemblies. Duct systems constructed of approved materials in accordance
with Section 603 that penetrate nonfire-resistance-rated floor assemblies shall be protected by any of the following methods:
1. A shaft enclosure in accordance with Section 707 of the International Building Code.
2. The duct connects not more than two stories, and the annular space around the penetrating duct is protected with an
approved noncombustible material that resists the free passage of flame and the products of combustion.
3. The duct connects not more than three stories, and the annular space around the penetrating duct is protected with
an approved noncombustible material that resists the free passage of flame and the products of combustion, and a
listed fire damper is installed at each floor line.
Exception: Fire dampers are not required in ducts within individual residential dwelling units.
INTERPRETATION:
Volume 1-A section 206 allows for the use of alternative materials, designs, and methods. The
use of Firemaster, Pyroscat, or equal to wrap flues or duct in lieu of shaft requirements of the
Building Code shall be determined by the “Building Code Official”. Wraps shall be installer
per the manufacturer’s installation instructions and the product listing requirements.
Consultants:
North Carolina Department of Insurance
Prepared by: Philip B. Edwards
Approved by:
Philip B. Edwards, M/P Code Administrator
MECKLENBURG COUNTY
Land Use and Environmental Services Agency
Code Enforcement
CODE
INTERPRETATION
Mechanical/Plumbing
Code Volume Reference: NC Mechanical Code (2006 & 2009)
Code Chapter Reference: 506.3.10
Subject:
Grease Duct Enclosure Exception
Effective Date:
5/1/2009
Prepared/Revision Date:
3/9/2009
CODE:
506.3.10 Grease duct enclosure. A grease duct serving a Type I hood that penetrates a ceiling, wall or floor shall be enclosed
from the point of penetration to the outlet terminal. A duct shall penetrate exterior walls only at locations where unprotected
openings are permitted by the International Building Code. Ducts shall be enclosed in accordance with the International
Building Code requirements for shaft construction. The duct enclosure shall be sealed around the duct at the point of penetration and vented to the outside of the building through the use of weather-protected openings. Clearance from the duct to the
interior surface of enclosures of combustible construction shall be not less than 18 inches (457 mm). Clearance from the duct to
the interior surface of enclosures of noncombustible construction or gypsum wall board attached to noncombustible structures
shall be not less than 6 inches (152 mm). The duct enclosure shall serve a single grease exhaust duct system and shall not contain any other ducts, piping, wiring or systems.
Exceptions:
1.
2.
3.
1. The shaft enclosure provisions of this section shall not be required where a duct penetration is protected with a throughpenetration fire stop system classified in accordance with ASTM E 814 and having an "F" and "T" rating equal to the fireresistance rating of the assembly being penetrated and where the surface of the duct is continuously covered on all sides
from the point at which the duct penetrates a ceiling, wall or floor to the outlet terminal with a classified and labeled material, system, method of construction or product specifically evaluated for such purpose, in accordance with ASTM E 2336.
Exposed duct wrap systems shall be protected where subject to physical damage.
The shaft enclosure provisions of this section shall not be required where a duct penetration is protected with a throughpenetration fire stop system classified in accordance with ASTM E 814 and having an "F" and "T" rating equal to the fire
resistance rating of the assembly being penetrated and where a prefabricated grease duct enclosure assembly is protected
on all sides from the point at which the duct penetrates a ceiling, wall or floor to the outlet terminal with a classified and
labeled prefabricated system specifically evaluated for such purposes in accordance with UL 222 I.
A duct enclosure shall not be required for a grease duct that penetrates only a non fire-resistance-rated roof/ceiling assembly.
INTERPRETATION:
The new NC 2009 Mechanical Code now requires that duct wraps for grease field fabricated grease ducts shall
meet ASTM E2336 standards (see exception 2) instead of the UL 1978 standards referenced in previous versions
of the NC Mechanical Codes.
In January 2009, Underwriters Laboratories (UL), Intertek Systems, and the International Code Council (ICC)
Evaluation Services jointly are abandoning all listings or evaluations that are based on Southern Building Code
Congress International Inc. (SBCCI) and Building Officials and Code Administrators (BOCA) acceptance criteria,
both of which use the internal fire test portion of UL 1978, which addresses reduced clearances for field applied
flexible wrap systems.
Hence, the ONLY listing for flexible wraps applied to grease ducts will be ASTM E2336-04.
Effective May 1, 2009, projects permitted after this date requesting to use the NC 2006 Mechanical Code will be
required to meet the more stringent ASTM E2336-04 standards. The NC 2009 Mechanical Code already requires
the use of ASTM E2336-04.
Prepared by: Consistency Team
Approved by:
Philip B. Edwards, M/P Code Administrator
MECKLENBURG COUNTY
Land Use and Environmental Services Agency
Code Enforcement
CODE
INTERPRETATION
Mechanical/Plumbing
Code Volume Reference: NC Mechanical 2009
Code Chapter Reference: Chapter 403, 404
Subject:
Ventilation Power Source
Effective Date:
1/1/2003
Prepared/Revision Date:
3/26/2009
CODE:
See Chapter: 403, 404
INTERPRETATION:
Parking garage ventilation systems shall be placed on standby power sources should permanent power be interrupted. It is the intent of the Code to supply constant ventilation to prevent the accumulation of carbon monoxide.
The use of CO detectors to reduce the cfm’s as allowed by 404.1 is permitted provided the system is supplied with
a reliable power source (i.e. primary + standby).
Prepared by: Consistency Team
Approved by:
Philip B. Edwards, M/P Code Administrator
MECKLENBURG COUNTY
Land Use and Environmental Services Agency
Code Enforcement
CODE
INTERPRETATION
Mechanical/Plumbing
Code Volume Reference: Mechanical Code 2009
Code Chapter Reference: 506.3.12.2
Subject:
Grease Duct Termination
Effective Date:
1/1/2003
Prepared/Revision Date:
3/26/2009
CODE:
506.3.12.2 Termination through an exterior wall. Exhaust outlets shall be permitted to terminate through exterior
walls where the smoke, grease, gases, vapors, and odors in the discharge from such terminations do not create a public nuisance or a fire hazard. Such terminations shall not be located where protected openings are required by the International
Building Code. Other exterior openings shall not be located within 3 feet (914 mm) of such terminations.
INTERPRETATION:
Horizontal termination of grease duct through an exterior wall shall extend 18” beyond finish surface and grade
downward to grill termination. This will allow grease deposited on grill to drip to ground without fouling building
finish (nuisance) and creating a fire hazard.
Exception: Water wash hoods or listed and tested systems (not portable in nature)
with greater filtration capabilities may terminate flush with exterior wall.
Prepared by: Consistency Team
Approved by:
Philip B. Edwards, M/P Code Administrator
MECKLENBURG COUNTY
Land Use and Environmental Services Agency
Code Enforcement
CODE
INTERPRETATION
Mechanical/Plumbing
Code Volume Reference: NC Fuel Gas 2009
Code Chapter Reference: Section 406
Subject:
Testing systems with MP regulators
Effective Date:
7/1/97
Prepared/Revision Date:
3/25/2009
CODE:
406.1.4 Section testing. A piping system shall be permitted to be tested as a complete unit or in sections. Under no circumstances shall a valve in a line be used as a bulkhead between gas in one section of the piping system and test medium in
an adjacent section, unless two valves are installed in series with a valved "telltale" located between these valves. A valve
shall not be subjected to the test pressure unless it can be determined that the valve, including the valve-closing mechanism,
is designed to safely withstand the test pressure.
406.1.5 Regulators and valve assemblies. Regulator and valve assemblies fabricated independently of the piping system
in which they are to be installed shall be permitted to be tested with inert gas or air at the time of fabrication.
INTERPRETATION:
MP regulators in gas piping systems shall be removed and a “spool” piece shall be substituted during the pressure test to assure that all parts of the piping system receive a full test and to assure that the manufacturers
specifications are not exceeded. The contractor is responsible for removing the “spool” piece and testing for
leaks by bubble soaping the connections after the completion of the test. The regulator must be present at the
appliance location to assure its applicability.
See Attached Drawing
Prepared by: Consistency Team
Approved by:
Philip B. Edwards, M/P Code Administrator
MECKLENBURG COUNTY
Land Use and Environmental Services Agency
Code Enforcement
CODE
INTERPRETATION
Mechanical/Plumbing
Code Volume Reference: NC Residential 2009
Code Chapter Reference: R606.10
Subject:
Lintels on Package Equipment
Effective Date:
2/1/2000
Prepared/Revision Date:
3/26/2009
CODE:
604.10 Lintels. Masonry over openings shall be supported by steel lintels, reinforced concrete or masonry lintels
or masonry arches, designed to support load imposed.
INTERPRETATION:
Any outdoor HVAC equipment, whose duct system penetrates the outside masonry wall shall have the masonry
above the penetration supported with a steel, concrete or masonry lintel as approved by the building section
604.10 of the 2009 NC Residential Building Code. Steel lintels must extend a minimum of three inches (3”)
into undisturbed masonry on each side of the penetration.
Prepared by: Consistency Team
Approved by:
Philip B. Edwards, M/P Code Administrator
Mechanical Q&A 2009
Attention:  Denotes a new question!
 Denotes a revised/revisited question.
Quarter
Quarter
Land Use and Environmental Service Agency
(Code Enforcement)
February 2009
2)
(Q) What does a contractor/permit holder have to supply for an
inspection?
(A) Section 107.2 of the NC Administrative Code states that it is the
duty of the permit holder “to provide access to and means for
inspection of the work for any inspections that are required by this
code.”
(Q) An existing home with a package unit, installed prior to the
requirement for lintels where the duct penetrates the foundation wall is
being replaced with equipment and duct of the same size. Would a lintel
have to be installed at this time?
(A) No, provided there is no increase in size of the foundation
opening.
1
1)
st
General:
Mechanical Q&A 2009
Attention:  Denotes a new question!
 Denotes a revised/revisited question.
Quarter
Land Use and Environmental Service Agency
(Code Enforcement)
February 2009
2)
3)
4)
5)
(Q) May a contractor use the merchant coupling provided with each stick
of gas pipe, to assemble the permitted gas piping system?
(A) The NC Gas Code does not prohibit the use of all thread
merchant couplings.
(Q) How many gas tests are required for a single gas pipe installation?
(A) The Code would require two tests. One before you cover the work
and one on final inspection. We require an additional test if you
would like “temporary heat” which would result in a total of three.
(Q) Does gas piping have to be steel where the piping terminates at the
meter?
(A) The Code does not require a steel termination, but many gas
utility providers (Piedmont Natural Gas) will refuse to connect to
CSST or copper piping.
(Q) May the valve for a free standing range be placed behind the range?
(A) Yes. The valve is for servicing and does not have to be placed
where it can be accessed without moving the appliance.
(Q) Does the Code require a cut-off to be placed at the base of decorative
gas yard lights?
(A) Yes! The light is considered an appliance and would require a
cut-off within 6 feet and accessible (box/vault).
1
1)
st
Gas Piping:
Mechanical Q&A 2009
Attention:  Denotes a new question!
 Denotes a revised/revisited question.
Quarter
Quarter
Land Use and Environmental Service Agency
(Code Enforcement)
February 2009
(Q) What does the new 2009 Energy Code require for duct insulation?
(A) Section 403. of the NC Energy Code states residential supplies
and returns shall be R8 in unconditioned areas. Duct running
through the web of floor truss systems may be R6 to limit duct
compression. Duct installed between conditioned floors need not be
insulated provided there is no condensation. Commercial supplies
and returns shall be R5 in unconditioned areas. Commercial outside
duct shall be R8.
1
1)
st
Duct:
MECKLENBURG COUNTY
Land Use and Environmental Services Agency
Code Enforcement
CODE
INTERPRETATION
Mechanical/Plumbing
Code Volume Reference: NC Mechanical Code 2009
Code Chapter Reference: 507.16, 507.16.1, 507.16.2
Subject:
Performance Test Detail
Effective Date:
1/1/2003
Prepared/Revision Date:
3/26/2009
CODE:
507.16 Performance test. A performance test shall be conducted upon completion and before final approval of the
installation of a ventilation system serving commercial cooking appliances. The test shall verify the rate of exhaust
airflow required by Section 507.13, makeup airflow required by Section 508, and proper operation as specified in
this chapter. The permit holder shall furnish the necessary test equipment and devices required to perform the tests.
507.16.1 Capture and containment test. The permit holder shall verify capture and containment performance of
the exhaust system. This field test shall be conducted with all appliances under the hood at operating temperatures,
with all sources of outdoor air providing makeup air for the hood operating and with all sources of recirculated air
providing conditioning for the space in which the hood is located operating. Capture and containment shall be
verified visually by observing smoke or steam produced by actual or simulated cooking, such as with smoke candles,
smoke puffers, etc.
507.16.2 Certification. These tests shall be witnessed by the code official. or at the code official's option, by a professional engineer who shall provide certification of performance to the code official.
INTERPRETATION:
The hood/s (Type I only) test shall verify the rate of airflow and proper operation with these
additional requirements:
1.
2.
3.
4.
5.
6.
7.
All building exhausting equipment (i.e. misc. kitchen exhaust fans, bath fans, etc.) shall be energized and in
operation during the performance test.
The cooking equipment under the hood/s shall be in place, up to operational heat levels and sufficient smoke/
grease generating foods to simulate the desired cooking process.
The hood shall capture all exhaust. T-T Puffers (or equal) shall be used during the test to check for spillage of
exhaust to the kitchen area.
The test shall also include the verifying of actual flow rates versus design flow rates.
The Designer or installer shall provide documentation detailing and certification of all test results including
the status of the structures systems during the tests (i.e. temperatures, food cooked, fans, etc.)
Testing/verification shall be performed by a P.E or person/s certified through AABC, TABB, NEBB or NBC,
who shall provide documentation of performance to the code official.
The electrical interlocking of any system providing make up air to the hood.
Technicians with one of these certifications is approved as an alternate to a Professional Engineer.
AABC (Associated Air Balance Council)
TABB (Testing & Balancing Bureau)
NEBB (National Environmental Balancing Bureau)
NBC (National Balancing Council)
Prepared by: Consistency Team
Approved by:
Philip B. Edwards, M/P Code Administrator
Land Use and Environmental Service Agency
(Code Enforcement)
Attention:  Denotes a new question!
 Denotes a revised/revisited question.
February 2009
Quarter
Quarter
Plumbing Q & A 2009
General:
st
(Q) What does a contractor/permit holder have to supply for an
inspection?
(A) Section 107.2 of the NC Administrative Code states that it is the
duty of the permit holder “to provide access to and means for
inspection of the work for any inspections that are required by this
code.”
1
1)
Land Use and Environmental Service Agency
(Code Enforcement)
Attention:  Denotes a new question!
 Denotes a revised/revisited question.
February 2009
Quarter
Plumbing Q & A 2009
2)
3)
(Q) Does a ejector pump tank, installed for the future, require the contents
(fluids) to be pumped prior to the final inspection?
(A) The pumping of the tank would be advisable, but it would be the
contractor’s discretion. However, the unused openings (vent, etc.)
need to be capped until they are used.
(Q) Does a residential fire sprinkler system require backflow devices?
(A) If the fire sprinkler system is separate from the plumbing
distribution system, then yes, a double check assembly would be
required.
(Q) What size/type water heater requires a safety pan?
(A) Section 504.7 does not exempt any type or size water heater or
tank from the requirement of safety pans.
1
1)
st
Equipment:
Land Use and Environmental Service Agency
(Code Enforcement)
Attention:  Denotes a new question!
 Denotes a revised/revisited question.
February 2009
Quarter
Plumbing Q & A 2009
(Q) What are the stipulations, if any, on the replacement of drainage
piping on fire damaged structures?
(A) The damaged piping may be replaced with piping materials and
methods used at the time the structure was built. The only difference
would be penetrations through rated assemblies. These penetrations
are considered “life safety” and would have to meet the Code.
1
1)
st
Drainage:
MECKLENBURG COUNTY
Land Use and Environmental Services Agency
Code Enforcement
CODE
INTERPRETATION
Mechanical/Plumbing
Code Volume Reference: 2009 Residential Code
Code Chapter Reference: R309.1.1
Subject:
Garage Duct Penetration
Effective Date:
1/1/2003
Prepared/Revision Date:
3/25/2009
CODE:
R309.1.1 Duct penetration. Ducts in the garage and ducts penetrating the walls or ceilings
separating the dwelling from the garage shall be constructed of a minimum No. 26 gage (0.48
mm) sheet steel or other approved material and shall have no openings into the garage.
INTERPRETATION:
The above excerpt from the 2002 Residential Code is applicable to all single family, duplex and
town homes and will be enforced by the mechanical inspector.
Prepared by: Consistency Team
Approved by:
Philip B. Edwards, M/P Code Administrator
MECKLENBURG COUNTY
Land Use and Environmental Services Agency
Code Enforcement
CODE
INTERPRETATION
Mechanical/Plumbing
Code Volume Reference: NC Mechanical Code 2009
Code Chapter Reference: 504.6
Subject:
Residential Dryer Exhaust
Effective Date:
August 30, 1996
Prepared/Revision Date:
3/25/2009
CODE:
504.6 Domestic clothes dryer ducts. Exhaust ducts for domestic clothes dryers shall be constructed of metal and shall have a smooth
interior finish. With the exception of the tion duct flexible ducts are prohibited The exhaust duct shall be a minimum nominal size of
4 inches (102 mm) in diameter. The entire exhaust system shall be supported and secured in place and terminate not less than 12
inches mm) above finished grade. The male end of the duct at overlapped duct joints shall extend in the direction of airflow. Clothes
dryer transition ducts used to connect the appliance to the exhaust duct system shall be limited to single lengths not to exceed 8 feet
(2438 mm) and shall be listed and labeled for the application. Transition ducts shall not be concealed within construction and must
remain entirely within the room in which the
appliance is installed.
Exception: Where the duct termination is less than 12 inches (305 mm) above finished grade an areaway shall be provided with a
cross-sectional area not Jess than 200 square feet (186m:?) The bottom of the duct termination shaJJ be no than 12 (305 mm)
above the areaway bottom
504.6.1 Maximum length. The maximum length of a clothes dryer exhaust duct shall not exceed feet (13 716 from the dryer
location to the outlet terminal. The maximum length of the duct shall be reduced 5 feet (1524 mm) for each 45 degree (0.79 rad)
bend and IO feet (3048 mm) for each 90 degree (1.6 rad) bend. The maximum length of the exhaust duct does not include the
transition duct. Table 603 4 for gage thickness.
Exception: Where the make and model of the clothes dryer to be installed is known and the manufacturer's installation instructions for such dryer are provided to the code official, the maximum length of the exhaust duct, including any transition
duct, shall be permitted to be in accordance with the dryer manufacturer's installation instructions. Where exhaust ducts are
installed in concealed locations. the developed length of the exhaust duct system be indicated by permanent labels or tags installed in an observable location .
504.6.2 Rough-in required. Where a compartment or space for a domestic clothes dryer is provided, an exhaust duct system shall
be installed in accordance with Sections 504.6 and 504.6.1.
INTERPRETATION:
To increase the dryer vent beyond the limitations set forth in the code would require the exhaust
system to be installed per a particular dryer manufacturer’s installation requirements. These
systems (Engineered) would be based on a specific brand and model dryer. The following must
be submitted during the plan review stage:
1)
2)
3)
4)
All documents submitted must reference a specific address or job.
An engineer must provide necessary data to prove that the proposed design does
not exceed the manufacturer’s specifications on this specific make and model of
dryer.
Documents must be signed and sealed by a N.C. Licensed Design Professional.
All structures utilizing an a system engineered for a specific make and model of
dryer shall have a permanent placard (framed or equal), permanently affixed to
the wall (dryer location), stating the exhaust length, the number of bends and
their respective radius of the duct installed so that a replacement dryer may be
selected that is capable of exhausting properly.
Notes:
1) Exhaust systems designed for a specific dryer are measured from the back of the dryer
to the dryer exhaust termination.
2) The use of booster fans is prohibited!
3) The use of long radius ells is approved on a case by case basis.
Consultants:
N.C. Department of Insurance, ICC
Prepared by: Philip B. Edwards
Approved by:
Philip B. Edwards, M/P Code Administrator
MECKLENBURG COUNTY
Land Use and Environmental Services Agency
Code Enforcement
CODE
INTERPRETATION
Mechanical/Plumbing
Code Volume Reference: NC Mechanical Code 2009
Code Chapter Reference: 306.5
Subject:
Roof Access
Effective Date:
Jan. 1, 2003
Prepared/Revision Date:
3/25/2009
CODE:
306.5 Equipment and appliances on roofs or elevated structures. Where equipment and appliances requiring
access are installed on roofs or elevated structures at a height exceeding 16 feet (4877 mm), such access shall be
provided by a permanent approved means of access, the extent of which shall be from grade or floor level to the
equipment and appliances’ level service space. Such access shall not require climbing over obstructions greater
than 30 inches (762 mm) high or walking on roofs having a slope greater than 4 units vertical in 12 units horizontal
(33-percent slope). Permanent ladders installed to provide the required access shall comply with the following
minimum design criteria:
1. The side railing shall extend above the parapet or roof edge not less than 30 inches (762 mm).
2. Ladders shall have rung spacing not to exceed 14 inches (356 mm) on center.
3. Ladders shall have a toe spacing not less than 6 inches (152 mm) deep.
4. There shall be a minimum of 18 inches ( 457 mm) between rails.
5. Rungs shall have a minimum 0.75-inch (19 mm) diameter and be capable of withstanding a 300-pound
(136.1 kg) load.
6. Ladders over 30 feet (9144 mm) in height shall be provided with offset sections and landings capable
of withstanding 100 pounds (488.2 kg/m2) per square foot.
7. Ladders shall be protected against corrosion by approved means.
Catwalks installed to provide the required access shall be not less than 24 inches (610 mm) wide and shall have
railings as required for ser vice platforms.
Exception: This section shall not apply to Group R-3 occupancies.
continued
INTERPRETATION:
DOI and the ICC have determined, that tenant access to roof service ladders or roof stairs/stairwells for
an individual tenants equipment service, shall be accessible to all of the building tenants all of the time
(24hrs/day). This can only be accomplished by placing these access components in common areas of
the building (i.e., outside, common equipment room, etc.)
This Code interpretation is applicable to any structure constructed under the 2006 NC Mechanical Code.
This will not apply to structures constructed under earlier versions of the NC Building Codes. (Existing
Building designation)
Provided that:
•
•
•
Any equipment changed has to be an exact equipment replacement .
Note: The addition of any new equipment will be applicable to the 2006 NC Mechanical Code.
(requires Full Plan Review)
A “Change of Use” in occupancy type will be required to meet the 2006 NC Mechanical Code.
(requires Full Plan Review)
The addition of OR reduction in tenant space square footage will be required to meet the 2006 NC
Mechanical Code. (requires Full Plan Review)
Notes:
• There will be NO Mechanical plan Review on “shell” buildings. Mechanical Plan Review will commence on upfit
submission. Mechanical components depicted on “shell” drawings are the owner/designer’s risk.
• In areas where “security” to the roof is an issue and the height of the roof exceeds 16’, modifications to the permanent ladder may be acceptable. (Requires approval)
Examples:
•
•
•
Lockable caged ladder.
Extendable ladder.
Stop the permanent ladder short of the ground (10’ max.) and use portable ladder to access. (May require a
platform)
Approved by:
Philip B. Edwards, M/P Code Administrator
CODE
INTERPRETATION
CODE:
SUBJECT:
MECKLENBURG COUNTY
Building Code Enforcement
2006 NC RESIDENTIAL CODE
SEALED CRAWL SPACE PERMIT
REVIEWED: RESIDENTIAL CONSISTENCY TEAM
Question:
Is a permit required for sealing a crawl space on an existing home?
Code reference:
Section 106.1 of the NC Administrative Code and Policies (“permit required for all work
described in the technical codes unless specifically exempted by the North Carolina
Statutes or the technical codes”)
Answer:
No building permit would be required unless the work exceeded $5,000 in cost.
Mechanical and or electrical permits, regardless of cost, may be required based
upon the design.
The NC General statutes GS153A-357 and 160A417 states no permit (building) is required if
the work is in a single family dwelling (commercial has no exceptions) and the cost of the
work is $5,000 or less and is not structural in nature. No building permit would be required
for installation within this scope; work over $5,000 would require a building permit and
inspections. Work $5,000 or under would still need to be installed correctly and would fall
back upon the owner of the property.
A mechanical and or electrical permit is required for any modifications to existing
mechanical or electrical systems that are made to meet one of the space moisture control
methods found in section R409.5 such introduction of supply air with backflow dampers or
introduction of continuous conditioned air. Any additional work such as installing an outlet
for a dehumidifier or wiring in a mechanical fan would require an electrical permit.
Modifications to these systems would require a licensed contractor in that field.
Approved By ___Gene Morton_______
F:\CORE\CORESUP\KATHY\GENE\CDEINTRP\wythe.doc
Date _______3/12/09_______________
MECKLENBURG COUNTY
Land Use and Environmental Services Agency
Code Enforcement
CODE
INTERPRETATION
Mechanical/Plumbing
Code Volume Reference: NC Mechanical Code 2009
Code Chapter Reference: 507.1
Subject:
TurboChef Exemption
Effective Date:
2/1/2006
Prepared/Revision Date:
March 2009
CODE:
507.1 General. Commercial kitchen exhaust hoods shall comply with the requirements ofthis section. Hoods
shall be Type I or Type II and shall be designed to capture and confine vapors and residues. Commercial
kitchen exhaust hood systems shall operate during the cooking operation.
INTERPRETATION:
Having reviewed documentation from UL, TurboChef, and North Carolina Department of Insurance, I have determined that TurboChef models HHB, C3 and NGC may be utilized in some restaurants. These will be approved on
a case by case basis having met the following criteria:
1.
The quantity of units total grease laden discharge shall exceed 5 mg/m3 when tested to EPA-202.
All other equipment is subject to the requirements set forth in Section 507 of the NC Mechanical
Code and shall be provided with a Type I or Type II hood as prescribed.
2.
The oven shall not be used for the cooking of meats, poultry, fish, or other foods that may produce
grease laden vapors. Foods that are pre-cooked and the fat rendered, shall be permitted.
3.
The oven shall be installed and maintained per the manufacturer’s specifications.
4.
This exemption does not supersede any other state or local agencies requirements.
Prepared by: Consistency Team
Approved by:
Philip B. Edwards, M/P Code Administrator
MECKLENBURG COUNTY
Land Use and Environmental Services Agency
Code Enforcement
CODE
INTERPRETATION
Mechanical/Plumbing
Code Volume Reference: NC Mechanical Code 2009
Code Chapter Reference: 507.2.1, 507.2.2
Subject:
Type II Hood Clarification
Effective Date:
12/21/2004
Prepared/Revision Date:
3/19/2009
CODE:
507.2.1 Type I hoods. Type I hoods shall be installed where appliances produce grease or smoke, such as occurs with
griddles, fryers, broilers, ovens, ranges and wok ranges.
507.2.2 Type II hoods. Type II hoods shall be installed where cooking or dishwashing appliances produce heat, steam, or
products of combustion and do not produce grease or smoke, such as steamers, kettles, pasta cookers and dishwashing machines.
Exceptions:
1.
2.
3.
4.
5.
Under-counter-type commercial dishwashing machines.
A Type II hood is not required for dishwashers and potwashers that are provided with heat and water
vapor exhaust systems that are supplied by the appliance manufacturer and are installed in accordance with the manufacturer's instructions.
Light-duty electric convection, bread, retherm or microwave The additional heat and moisture loads
generated by such appliances shall be accounted for in the design of the HVAC system.
A Type II hood is not required for the following electrically heated appliances: toasters, steam tables,
popcorn poppers, hot dog cookers, coffee makers, rice cookers, egg cookers, holding/warming ovens.
The additional heat and moisture loads generated by such appliances shall be accounted for in the design
of the HVAC system.
Low-temperature [not greater than] 20°F (49°C)] commercial chemical-type dishwashers.
507.2.3 Domestic cooking appliances used for commercial purposes. Domestic cooking appliances utilized for commercial purposes shall be provided with Type I or Type II hoods as required for the type of appliances and processes in
accordance with Sections 507.2, 507.2.] and 507.2.2.
Exception: A maximum of two residential ranges (four burner) installed in dwelling units churches. schools, day
care centers, break areas and similar installations
INTERPRETATION:
Definition:
For purposes of clarification, the cooking equipment referenced in 507.2.1 would involve a “commercial cooking
process” where by food is typically prepared and sold to customers. These processes would include culinary
schools, public or private schools, hospitals, and large corporate kitchens and similar occupancies.
The exception in 507.2.3 refers to cooking processes that are sporadic and not as intensive as those referred to in
507.2.1 and 507.2.2. These processes could utilize a type II hood due to the limited use and lesser grease accumulation. This would include apartment/condominium clubhouse, appliance sales center or similar.
Prepared by: Consistency Team
Approved by:
Philip B. Edwards, M/P Code Administrator
MECKLENBURG COUNTY
Land Use and Environmental Services Agency
Code Enforcement
CODE
INTERPRETATION
Mechanical/Plumbing
Code Volume Reference: NC Mechanical 2009
Code Chapter Reference: 602.2.1
Subject:
Wood in a Plenum
Effective Date:
1994
Prepared/Revision Date:
March 2009
CODE:
602.2.1 Materials within plenums. Except as required by Sections 602.2.1.1 through 602.2.1.5, materials within
plenums shall be noncombustible or shall have a flame spread index of not more than 25 and a smoke-developed
index of not more than 50 when tested in accordance with ASTM E 84.
Exceptions:
1. Rigid and flexible ducts and connectors shall conform to Section 603.
2. Duct coverings, linings, tape and connectors shall conform to Sections 603 and 604.
3. This section shall not apply to materials exposed within plenums in dwellings.
4. This section shall not apply to smoke detectors.
5. Combustible materials enclosed in noncombustible raceways or enclosures, approved gypsum board assemblies or enclosed in materials listed and labeled for such application.
INTERPRETATION:
Wood products shall not be placed inside a plenum (treated or untreated). Only materials that are LISTED/
TESTED to meet the 25/50 flame/smoke rating will be allowed.
Prepared by: Consistency Team
Approved by:
Philip B. Edwards, M/P Code Administrator