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20 Jul
Figure 1b downwindlow
How poor ventilation design can cause indoor odor problems
Category: Blogs
Indoor air quality refers to how pure air is within an occupied indoor space. While most of us intuitively understand that contaminants like mold, carbon dioxide, and secondhand sm...
13 Jul
How door operability problems work
Category: Blogs
The tallest building in Cambridge, Massachusetts, stands on the campus of the Massachusetts Institute of Technology (MIT). The Cecil and Ida Green Building, a 21-story I. M. Pei de...
29 Jun
Solar_Power_Plant_med
Dynamic wind loads on solar panels
Category: Blogs
CPP’s wind engineers aren’t just pioneers in wind loading on solar panels, they’re also renowned leaders in dynamic wind forces on structures. Our wind experts are even responsible...
22 Jun
Simplified schematic of tornado wind flow
Straight line winds as violent as tornadoes
Category: Blogs
Those who live in tornado alley rightfully fear the destructive power of these powerful weather events. But recent thunderstorms in Madison County, Indiana, demonstrate that straig...
15 Jun
Stack Effect
Natural cooling strategies
Category: Blogs
Buildings traditionally rely on mechanical air conditioning to ensure occupant comfort and safety during hot weather. But such mechanical systems can sometimes be downsized or elim...
13 Jun
Figure 5: Modified AERMOD process using Equivalent Building Dimensions (EBD) based upon an accurate physical model tested in an atmospheric boundary layer wind tunnel.
AERMOD Beyond the Box
Category: Blogs
How Better Inputs Can Give You Better Results Introduction AERMOD is known to calculate exhaust concentrations, in certain situations, that are less accurate and worse than they re...
08 Jun
Measuring concentrations with Mirant site structures for 36 wind directions.
Equivalent Building Dimensions
Category: Blogs
AERMOD is the Environmental Protection Agency’s (EPA’s) preferred regulatory tool for modeling pollutant dispersion. If you work with AERMOD, then perhaps you already know th...
01 Jun
Flow visualization demonstrating recirculating wind in a pedestrian area.
Outdoor comfort criteria
Category: Blogs
Our engineers are frequently asked to investigate how proposed structures or proposed changes to structures will affect those who use outdoor spaces. Or we’re tasked with identifyi...
25 May
The wind tunnel model of the Durst project
Wind exposure
Category: Blogs
We all intuitively know that the wind affects things on the ground. But did you know that things on the ground also affect the wind? Highly developed environments tend to slow down...
11 May
Pollution-Child
Smoke management for large indoor spaces
Category: Blogs
Grand atria and expansive halls are centerpieces of some of today’s most architecturally striking buildings. Large rooms offer occupants a sense of continuity from one floor ...