Andy Stadheim, PE
Andy.stadheim@buildingstart.com
Cheap Energy
Building Envelope was a lower priority
BAS systems were not as sophisticated
Energy is expensive
Building Envelope is a major concern
BAS systems and the equipment are sophisticated
Review TAB technicians work daily or weekly
Perform re-testing immediately vs. Trips back
Avoid the BATCH review at the end that delays
the report turnaround and even occupancy
Invite building owners and Cx agents to a project
Deliver issues found digitally to the GC and team
TAB work performed is user / time stamped
Less time shuffling paperwork
Less time running into the office
More time with “Hoods in the air”
Turn around reports “immediately” after done
All readings have user and time / date stamp
Readings can be made wirelessly to hoods
Easily track issues found and items to fix
Over 40,000 projects ~1k/mo.
Over 5 million equipment tested
Over 700,000 notes and issues
BACnet = industry communication protocol
Lonworks = industry communication protocol
N2 bus = proprietary communication protocol
gbXML = industry communication protocol
COBIE = industry communication protocol
CUSTOM = as with BAS, also with BIM
Building Information Modeling (BIM) is the
process of generating and managing building data
during its life cycle[1]. Typically it uses threedimensional, real-time, dynamic building modeling
software to increase productivity in building design
and construction.[2] The process produces the
Building Information Model (also abbreviated BIM),
which encompasses building geometry, spatial
relationships, geographic information, and
quantities and properties of building
components.
“quantities and properties of
building components.”
Equipment - AHUs, Fans, Pumps, VAV's, Registers
Equipment names and unique ID #’s – a digital
version of an equipment schedule.
Properties Make, Model, Design CFM, RPM, Volts,
Amps etc.
Also,
Areas – Room #’s, names etc.
What does the data look like?
<AirLoopEquipment id="East6-Equip-38" equipmentType="VAVBox">
<Name>Hot water reheat boxes</Name>
<Description>Used for reheat on VAV systems with hot water terminal coils</Description>
<MinFlow unit="Fraction">0.3</MinFlow>
<Flow unit="CFM" FlowType=“RatedFlow">250</Flow>
<Flow unit="CFM" FlowType="MinFlow">80</Flow>
<Temp unit="C" tempType="CoolDesign">12.8</Temp>
<Temp unit="C" tempType="HeatDesign">48.9</Temp>
<DeltaP unit="Pascals">-50</DeltaP>
<DeltaT unit="C">30.6</DeltaT>
<MinRelativeHumidity unit="Fraction">0.1</MinRelativeHumidity>
<MaxRelativeHumidity unit="Fraction">0.9</MaxRelativeHumidity>
<Power powerType="HotWater" useType="Heating" />
<Cost>2000</Cost>
<HydronicLoopId hydronicLoopIdRef="HydLoop-8" hydronicLoopType="HotWater" />
</AirLoopEquipment>
</AirLoop>
What does the data look like?
NAME
<AirLoopEquipment id="East6-Equip-38"
equipmentType="VAVBox">
DESIGN
MAX
<Flow unit="CFM“
FlowType=“RatedFlow">250</Flow>
DESIGN
MIN
<Flow unit="CFM"
FlowType="MinFlow">80</Flow>
End of
Unit
</AirLoopEquipment>
</AirLoop>
How does this digital data help TAB?
Take off/Bid – Perform Bids with less data entry
Automated Project setup Record site data, tied
to original design.
Audit Trail – Each recording has time/date stamp
Final Report – Ability to print the final CFM on the
original print via the BIM id connection, no
representative drawing required – AUTOMATIC.
Live demo of BIM import
All this sounds too good to be true…
Main Challenges:
Data source– Completeness vs. Partially complete
Ie. Engineers have to be utilizing tools that can create
a BIM compliant file and know how to use it.
Detail data–
Naming / numbering of registers, right parameters
File Size– BIM files can become very large
Tools– Cost and ease of use.
Tools
Autodesk – REVIT – Design projects
Bentley – Microstation – Design projects
AiRNAB – Read and build TAB projects + publish back
Protocol
gbXML – Green Building XML
COBIE – Construction Operations Building Info Exchg.
BEST
OPEN > PROPRIETARY
TWO-WAY > ONE-WAY
Basic flow of BIM data
Design
Engineer
BIM
Construction
Ownership
GC
O&M
Mech
Service
BIM
gbXML
COBIE
Elec
TAB
Warranty
BIM BIG PICTURE
Manuf.
Power Co.
Digital documentation milestones
Projects– Over 40,000 projects digitally captured
Equipment– Over 5.0 million equipment objects
tested.
Notes / Issues– Over 700,000 notes and issues
logged digitally.
QUESTIONS ?
Andy Stadheim, PE
Andy.stadheim@buildingstart.com