LIGHT-GAUGE STEEL FRAMING
CONNECTION PRODUCTS:
SPECIFYING TESTED CONNECTION
PRODUCTS THAT LIMIT LIABILITY
LIGHT-GAUGE STEEL FRAMING CONNECTION PRODUCTS:
SPECIFYING TESTED CONNECTION PRODUCTS THAT LIMIT LIABILITY
LIGHT-GAUGE STEEL FRAMING
CONNECTION
PRODUCTS:
LIGHT-GAUGE STEEL FRAMING
SPECIFYING
TESTED
CONNECTION PRODUCTS:
CONNECTION
PRODUCTS
THAT
SPECIFYING TESTED
LIMIT
LIABILITY
CONNECTION PRODUCTS THAT
An AIA Continuing Education Program
Credit for this course is 1 AIA/CES Learning Unit for HSW credit.
LIMIT LIABILITY
Course Number: DIE05F
This Course is
Sponsored By:
9100 Centre Pointe Blvd, Suite 210
West Chester, OH 43069
Tel: (513) 870-1100
Fax: (513) 870-1300
Email: info@clarkdietrich.com
Web: www.clarkdietrich.com
An American Institute of Architects
(AIA) Continuing Education Program
Approved Promotional Statement:
• Ron Blank & Associates is a registered provider with The American
Institute of Architects Continuing Education Systems. Credit earned
upon completion of this program will be reported to CES Records for
AIA members. Certificates of Completion are available for all course
participants upon completion of the course conclusion quiz with
+80%.
• This program is registered with the AIA/CES for continuing
professional education. As such, it does not include content that
may be deemed or construed to be an approval or endorsement by
the AIA Ron Blank & Associates, Inc. of any material of construction
or any method or manner of handling, using, distributing, or dealing
in any material or product.
An American Institute of Architects
(AIA) Continuing Education Program
Course Format: This is a structured, web-based, self study course
with a final exam.
Course Credit: 1 AIA Health Safety & Welfare (HSW) CE Hour.
Completion Certificate: A confirmation is sent to you by email or
you can print one upon successful completion of course or from your
ronblank.com transcript. If you have difficulties printing or receiving
your certificate please send requests to certificate@ronblank.com
Design professionals, please remember to print your certificate of
completion after successfully completing a course conclusion quiz. Email
confirmations will be sent to the e-mail address you have provided in your
ronblank.com account.
COURSE DESCRIPTION
Define the use of light-gauge steel framing
connection products. Discuss practical applications
of deflection clips, support clips and the various
methods of installation for different types of
connectors.
LEARNING OBJECTIVES
At the conclusion of this course you should have a better
understanding of the following:
• Explain how deflection clips are used to attach exterior
curtain wall studs to a building structure
• Explain how to provide allowance for vertical building
movement independent of the cold-formed steel framing
• Define what types of support clips are used for rigid or
positive attachment connections
• Explain the various methods used to install different types of
connectors
• Properly interpreting the allowable load tables for clips
CONNECTION PRODUCT
CATEGORIES
• Section 1:
• Section 2:
• Section 3:
• Section 4:
Deflection Products
Rigid Connections
Miscellaneous Connectors
Load Tables
SECTION1:1:DEFLECTION
DEFLECTIONPRODUCTS
SECTION
PRODUCTS
• Extended Reach Style Curtain Wall Connector
• Surface Mounted Deflection Clip
• Offset Bypass Vertical Slide Clip
• In-Plane Style Head-of-Wall Clip
DEFLECTION CONNECTIONS
DFLECTION
CONNECTIONS
Extended Reach
Style Curtain Wall
Connector
Surface Mounted
Deflection Clip
Extended Surface
Mounted Deflection
Clip
Offset Bypass
Vertical Slide Clip
In-Plane Style
Head-of-Wall Clip
EXTENDED REACH STYLE
CURTAIN WALL CONNECTOR
An extended reach style
curtain wall connector is used
to attach a vertical stud to a
structural steel spandrel
beam (or other support)
when there is no provision to
attach to the edge of the
slab. This system is used to
connect by-pass style curtainwall assemblies as shown.
Allows for up to 2-1/2”
vertical deflection.
EXTENDED REACH STYLE
CURTAIN WALL CONNECTOR
• The connector must engage the
building structure a minimum
of 4”
• Studs are plumbed and then
the clip is secured to the studs
with proprietary shoulder
screws
• Embossed with fastening
patterns to ensure accurate
placement of fasteners
• Connectors are manufactured
with G90 50 ksi steel.
SURFACE MOUNTED DEFLECTION CLIP
Surface mounted deflection clips are used to
attach exterior curtain-wall studs to the
building structure and provide up to 3 inches
of vertical building movement independent of
the cold-formed steel framing.
A surface mounted deflection clip installs
quickly with screws or powder-actuated
fasteners, and provides adjustable standoff to
ensure a plumb wall plane. Proprietary screws
ensure friction-free sliding. Each clip is also
embossed with fastening patterns to ensure
accurate placement of fasteners.
OFFSET BYPASS VERTICAL SLIDE CLIPS
Offset bypass vertical slide clips are used to attach exterior curtain wall studs (3-5/8” - 8”
widths) to the building structure and provide for vertical building movement independent of
the cold-formed steel framing. This clip provides variable standoff and eliminates the need
for shims or additional framing components. The offset bypass vertical slide clip fastens to
the floor/ceiling beam and is secured to the stud with proprietary screws. The clip restricts
lateral movement, but enables the building structure to move vertically.
Attachment to
bottom of beam
IN-PLANE STYLE HEAD-OF-WALL CLIP
In-plane style head-of-wall clips are used in HOW deflection conditions for in-fill curtainwall assemblies to provide for vertical movement. These clips are used in place of
deflection track. They provide a positive attachment and do not require bridging installed
continuously throughout.t Clips can be attached to the underside of structural members,
concrete decks or floor assemblies.
Studs must be cut less than full height to enable
vertical movement up to 2-1/2“.
he upper.
IN-PLANE STYLE HEAD-OF-WALL CLIP
The in-plane style head-of-wall clip is
attached to the structure by welding or
using PAFs or screws and to the top of the
stud web using specially designed screws.
It is manufactured with G90 50 KSI steel.
SECTION 2: RIGID CONNECTIONS
•
•
•
•
Framing Clips
Support Clips
Bridging Clips
Foundation Connectors
RIGID CONNECTIONS
RIGID CONNECTIONS
Support Clip
Framing Clip
Bridging Clip
Header Hanger
Support Clip
Framing Clip
Clip Angle
Anchor Clip
Holdown
FRAMING CLIP
F1 = Shear
F2 = Tension
F3 = Compression
The framing clip can be used to affix the stud to a ledger or directly to red iron.
FRAMING CLIP
• Framing Clips are used to secure
framing members to the building
• This clip has an offset leg allowing
greater versatility
• Framing clips do not allow for deflection
SUPPORT CLIP
Support clips are used in multiple construction
projects, specifically in conjunction with structural
studs and track. The L-shaped clips fit between the
stud flanges, so that shorter length clips do not need
to be ordered. These labor time-savers include prepunched holes for quicker screw attachments, and
are punched to accommodate for CRC lateral bracing
connections.
SUPPORT CLIPS
*Note: When not filling all holes, install fasteners
symmetrically starting at the top and bottom edges,
and moving towards the center of the clip.
BRIDGING CLIP
Bridging clip is used to secure U-Channel or Cold Rolled
Channel (CRC) to structural wall studs when used in loadbearing or curtain wall applications. The wall stud friction
fit design allows for as little as one screw for the
connection to the U-Channel.
The bridging clip is a
stiffened, G90 galvanized
steel clip that's tested and
designed to facilitate the
rapid, efficient installation
of 1-1/2" U-Channel lateral
bracing for exterior curtain
wall framing, loadbearing
walls or high interior
partitions constructed of
structural studs.
BRIDGING CLIPS
• Each end of lateral bracing must be rigidly fixed or
otherwise prevented from horizontal movement
HOLDOWN
Shearwall Attachment
• Used to transfer tension loads between floors or
from structural members to the foundation
• Install the holdowns using anchor bolts or
alternate anchorage calculated to resist the
tension load for your specific application
FOUNDATION CLIP
Foundation clips are high-performance, cost effective solutions for knee wall-tofoundation connections and shear wall-to-foundation connections. These multiapplication clips feature a 1/4" thick A36 steel stiffening plate that provides superior
design values for maximum performance. The foundation clips are designed to resist
horizontal, torsional and vertical (uplift) loads. These clips are pre-punched with a
series of attachment holes for steel framing connections and a 1/2" anchor bolt hole
for foundation connections.
ANCHOR CLIPS
Anchor Clips are high-performance, cost effective solutions for
knee wall-to-foundation connections, light duty shear wall-tofoundation connections and truss to wall connections. These
multi-application clips feature reinforced stiffening ribs that
provide superior design values for maximum performance.
Anchor Clips are designed to resist horizontal, torsional, and
vertical (uplift) loads. These clips are pre-punched with a
series of attachment holes for efficient and accurate fastener
placement.
Reinforced stiffening ribs
SECTION 3: MISCELLANEOUS
•
•
•
•
Web Stiffeners
Header Hangers
Hurricane Ties
Skewable Angles
WEB STIFFENER
Web stiffeners are used to provide
reinforcement of joist webs to prevent
crippling. Web reinforcement is often
required by design to enhance the load
capacity of joists.
The unique design of this web stiffener allows the
installer to insert the stiffener on the inside of the
joist after the joist is installed. This stiffener
eliminates the need to pre-insert traditional web
stiffeners prior to joist installation. The one-piece
assembly is easily rotated in-place for a tight fit.
HEADER HANGERS
Header hangers are used to connect box headers
to jambs or beams to columns and transfer large
vertical loads. This universal hanger is designed
so one part can be used for either side of the
connection. The hanger also features a support
tab for proper alignment and easy installation.
Features a support tab for proper alignment
and easy installation. Pre-punched with a series
of round, square and triangle holes to ensure
proper fastener placement for specified loads
HURRICANE TIES
Hurricane ties are designed to provide
wind and seismic resistance for trusses
and rafters. Quick and efficient, these
versatile connectors can also be used for
general tie-down purposes, strong back
attachments and as all-purpose ties where
one member crosses another.
Twisted strap tie
SKEWABLE ANGLE
Skewable angles are used to make rigid
attachments of joist-to-joist or joist-to-other
miscellaneous framing. This clip is ideal for
making off-angle connections. It is easily field
bent from 0° to 135°. Manufactured from G90,
33 ksi steel. This clip can only be bent one time.
SECTION 4: LOAD TABLES
All load tables are not created equal…
LOAD TABLES
• It is extremely important that the allowable load tables for clips are
interpreted properly. The allowable load for a clip assembly is
governed not only by the capacity of the clip but also by the
method of attachment to the structure.
• Some manufacturers’ clip tables display allowable loads for the clip,
while ignoring the attachment method. Unfortunately, when
attaching a clip to the structure with pins, screws or concrete
anchors, the overall capacity will often be lower than the published
value.
• Load tables that ignore the attachment to the structure essentially
imply that the clip must be welded to achieve the stated values.
This can add a great deal to the installed cost of the assembly.
IN-PLANESTYLE HEAD-OF-WALL CLIP
Head-of-Wall Clip Allowable Loads
Table Notes
Mechanically Anchored
Stud
thickness
and yield
strength
Slip
allowance
(in)
Welded
direct to
structural
steel
Number of
anchors
PAF in
steel
(FS=5)
PAF in
steel
(FS=10)
#12-24
screws in
steel
¼” X 1-3/4”
screw in
concrete
1) Tabulated values for welds are based on 4-1/2”
of weld along each edge of the 1-1/2” clip leg.
2) Tabulated values for the proprietary PAFs and
proprietary screws are based on the following:
the outermost anchors are placed 1/2"(min.)
away from the clip edge and/or bearing edge,
anchors are spaced at 3-3/4" (min) when using
two anchors, 1-7/8" (min) when using three
anchors, and 1-1/4" when using 4 anchors.
3) Tabulated values for the specialty PAFs are
based on the following: anchors are spaced at
3-3/4" (min.) when using 2 anchors, and 1-7/8"
when using 3 anchors, anchors are placed
3/4"(min.) away from edge of building structure
and 1/2" (min.) away from end of HOW. The
tabulated values are based on 3000 psi normal
weight concrete.
4) The values given for PAFs are based on 0.145"
diameter PAFs with 15 mm washers.
5) It is the responsibility of the design professional
to detail the project drawings for proper clip
attachment.
FRAMING CLIP
Location options with (4) screws
Framing Clip Allowable Loads
LOAD TABLES
Surface Mounted Deflection Clip Allowable Loads (lbs.)
Table Notes
1)
2)
3)
The 1/3 stress increase for wind
shall not be used.
Attach building anchors to the
structure according to the
manufacturer’s instructions.
Anchors shall be installed through
the embossments on the scored line
of the clip as shown on the
drawings above. In no case shall
anchors be installed more than 3/4"
from the bend on the short leg of
the clip. In cases of discrepancy
between this information and the
design engineer’s details, the design
engineer’s details shall be followed.
It is the responsibility of the design
professional to detail the project
drawings for proper clip installation.
LOAD TABLES
Support Clip Allowable Shear Load Table
The allowable tension
assumes that the
mechanical fasteners
to the structure are
positioned at the
centerline of the clip
leg.
This enhanced table
gives designers the
necessary information
to provide flexible
contractor-friendly
designs and still have
confidence that all
load requirements
have been satisfied.
LOAD TABLES
Extended Reach Curtain Wall Connector Load Table
Table Notes
Mechanically Anchored
Stud
thickness and
yield strength
Slip
allowance
(in)
Welded direct
to structural
steel
Number of PAF in steel PAF in steel
(FS=5)
(FS=10)
anchors
#12-24
screws in
steel
¼” X 1-3/4
screw in
concrete
1) Values given in parentheses indicate allowable loads when
using a 1/3 stress increase.
2) The tabulated values for welds are based on the following
weld lengths: use 4-1/2" of weld along each edge of the 11/2" extended reach clip leg for 20, and 18 gauge, use 51/2" along each edge for 16 and 14 gauge, use 6-1/2" along
each edge for 12 gauge. Use E70XX (min.) electrodes. (Note
that the welded values may require more than 4" of
structure engagement.)
3) Tabulated values for PAFs and proprietary screws are based
on the following: fasteners are spaced at 3" o.c. (min.)
when using two anchors, and 1-1/2" o.c. (min.) when using
three anchors; anchors are placed 1/2" (min.) away from
the edge of the building structure, and 1/2" (min.) away
from edge of the curtain wall connector.
4) Tabulated values for specialty PAFs are based on the
following: anchors are spaced at 2-3/4" o.c. (min.), anchors
are placed 3/4" (min.) away from edge of building
structure and 1/2" (min.) away from edge of connector.
The tabulated values are based on 3000psi normal weight
concrete.
5) For 3/4" deflection, center the propriety screws along the
topmost hash mark. For 1-1/4" deflection, center the
screws along the center hash mark.
6) Capacities listed for PAFs are based on minimum PAF
requirements listed in General Note #6 on page 9.
7) It is the responsibility of the design professional to detail
the project drawings for proper clip attachment.
LOAD TABLES
The bottom line?
• When comparing load capacities, read the fine print
• Make sure that the connection product you specify can be
installed using your fastener of choice
• Don’t get stuck welding a product that you didn’t intend to
weld
COURSE SUMMARY
Now you should have a better understanding of the following:
• Explain how deflection clips are used to attach exterior
curtain wall studs to a building structure
• Explain how to provide allowance for vertical building
movement independent of the cold-formed steel framing
• Define what types of support clips are used for rigid or
positive attachment connections
• Explain the various methods used to install different types of
connectors
• Properly interpreting the allowable load tables for clips
This concludes…
LIGHT-GAUGE STEEL FRAMING
CONNECTION PRODUCTS:
LIGHT-GAUGE
FRAMING
SPECIFYING
TESTEDSTEEL
CONNECTION
CONNECTION
PRODUCTS:
PRODUCTS
THAT LIMIT
LIABILITY
SPECIFYING TESTED CONNECTION
PRODUCTS
An AIA
Continuing EducationTHAT
Program LIMIT LIABILITY
Credit for this course is 1 AIA/CES Learning Unit for HSW credit.
Course Number: DMF005
This Course is
Sponsored By: