Crack the Code
This engineering organization founded in 1894 focuses on advancing human well-being for the built environment.
ASHRAE
This is the maximum airflow that can be transferred to any room from a corridor in hospital buildings.
25 CFM or 10%
This is used in hospital and lab buildings for precise and accurate Zone airflow control
Venturi Valve
This field of engineering is concerned with the properties of gas-vapor mixtures. We can thank Mollier for this one!
Psychrometrics
This acronym refers to Arup's globally aligned set of Revit templates, content & parameters.
What is GRS (Global Revit Standards)?
Manufacturers catalog their product's environmental impact in these types of documents.
What are Enviromental Product Disclosures (EPDs)
Environmental air duct exhaust shall terminate not less than this distance from a forced air inlet.
2022 CMC, Section 502.2.1
10'-0"
Adding this component to 90deg metered elbow results in a lower pressure drop in comparison to a smooth radius elbow
Turning vanes
This component maintains high efficiency and expanded low temperature operation in outdoor DX units by preventing wind from blowing in
Wind baffles
Interchangeable with practical or functional, airflow rate is commonly derived from this type of load
Sensible Load
The air velocity for horizontal mains must not exceed this value for acoustic concerns
1200 fpm - 1500 fpm
This building certification is the world's most widely used green building rating system
LEED
Though commonly referred to as "Title 24", the California Energy Code is formally designated Part what of Title 24: Building Standards Code
Part 6
The equal friction method calculates a maximum system pressure drop rating per 100'-0" of duct via the following criteria
Total system airflow and maximum velocity
The typical minimum duct length required downstream of fans to achieve fully developed flow
3 duct diameters
The three metrics determined by the Fan Affinity Laws
Airflow, pressure, and power consumption
This component is typically required under any piping or cooling equipment located within an IDF or electrical room
Secondary drain pan
Greenhouse gas's ability to trap heat within the atmosphere compared to Carbon Dioxide (CO2) is characterized by this metric
Global Warming Potential (GWP)
Parking garage exhaust shall not be required for enclosed parking garages given either of these 2 conditions apply (name at least 1)
2022 CMC, Section 403.7.1
Floor area is less than 1,000 SF or 5 or less vehicles are stored in the parking garage
Exterior zones typically extend a maximum distance of this far out from exterior walls
15'-0"
General exhaust from shower to be stainless steel roughly till this point of duct.
The branch duct to shower/ Approximately 50% dilution
Component in mechanical refrigeration systems that transforms high pressure vapor into high pressure liquid.
Condenser
Fire smoke dampers are exempt in this type of exhaust fan system tied to emergency power
Sub-duct
Buildings are responsible for this percentage of electrical consumption in the United States
40%
Ventilation is permitted to reduce to zero in select few occupancy categories when spaces are in this operating mode
2022 CEC, Section 120.1
Occupied-standby
Rectangular duct above this aspect ratio is typically more expensive and less acoustically efficient
3:1
To avoid frequent tripping of FSDs, a high temp fusible link option FSD or heat detector in lieu of a smoke detector is preferable in this type of duct application
Dishwasher exhaust/TYPE II exhaust
The common factor that is used in load calculations that is a product of the specific heat times the density times the number of minutes per hour.
Specific heat capacity of air Or 1.08
~18" clearance is required at the top and side of this item. Utilities may pass over it every ~6'-0".
Cable trays
A building's carbon footprint is most accurately measured by evaluating these 2 types of emissions occurring both during and after construction
Embodied and operational carbon