ASCE 7 Components & Cladding Wall Wind Pressure Calculator

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By clicking below, you agree that the use of this design aid is for estimating purposes only. Results are not valid for use & no construction or design shall be performed without the review and certification by a registered professional engineer.

No warranty or guarantee whatsoever is offered with any results obtained herein.


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ASCE-7-22 Wall Components & Cladding Wall Wind Pressure Calculator

Use this tool to calculate wall zones 4 & 5 positive & negative ASD design wind pressures.

CALCULATOR NOTES

1. This calculator is for estimating purposes only & NOT for permit or construction. Results are ONLY valid when signed & sealed from a professional engineer from Engineering Express If you would like signed & sealed results, please make sure you are logged into your Engineeringexpress.com account prior to inputting your data in both input areas 1 and 2. Press ‘Order Certified Copies For Permit’ which appears after all fields are filled out to order a review of your submission & PE certification once approved, it will be delivered to you for permit submission.

2. Do not use fractions. Round up everything but width and height – round those down.

3. For Florida permits after January 1, 2024, and the 2021 IBC code, use the ‘ASCE 7-22-8th Edition Florida Building Code (2023)’ option.

4. Pressure results are the Allowable Stress Design (ASD) method.

5. Suggested Wind Velocity & Exposure category requirements can be found by confirming with the permit building department before using or visit  ATC Wind site 

*For residential structures (Risk Category II’) in Broward & Palm Beach Counties, the required wind velocity is 170mph. For residential structures (‘Risk Category II’) in Miami-Dade County, the required wind velocity is 175mph.  If you are near the coast, it’s Exposure Category ‘D”; inland is Exposure Category ‘C’.  

6. Visit EngineeringExpress.com/Wind to learn more about the terms & parameters of this tool & HOVER over / press on the input labels for more information about that item.

7. Discounts are available for frequent users by purchasing Tokens

Calculator last updated Feb 8, 2022 – Resolved conditions where pressure reduction for roof slope wasn’t being taken from recent server upgrade due to degrees symbol..
Previous – May, 2022 – trib. area now shown & explained, dist ‘a’ clarified.

Watch The Tutorial

ASCE 7-22 C&C Calculator - V2.13 - 7 09 2024
ASCE COMPONENTS & CLADDING WALL OPENING
WIND LOAD CALCULATOR
SEE HELP & IMAGE AT BOTTOM - HOVER/CLICK LABELS FOR HELP
           
Click to read our informative help page on this tool.
             
INPUT AREA 1 SITE CONDITIONS UNITS
Consult your building department or engineer for governing codes and design standards ASCE CODE YEAR
 
Ultimate Wind Speed, Vult, based on location
This can be found at hazards.atcouncil.org and is subject to your local building departmet       WIND VELOCITY, Vult
MPH
Determine your site exposure category. Help can be found at ecalc.io/Exposure      ASCE EXPOSURE CATEGORY
 
This is generally 0.85. Change to 1.0 only if required by building department or special use case directed by the architect / engineer. WIND DIRECTIONALITY FACTOR Kd
 
Wind pressures are calculated for flat terrain by default. Local hills or ridges may increase calculated wind pressures. LOCAL TOPOGRAPHY
 
Use 1.0 for flat terrain. For areas on or near hills, ridges, or escarpments, this factor helps account for wind speeding up as it flows over the land. If required, this factor can be calculated separately by Engineering Express or the design engineer. Refer to the help glossary above for more information. TOPOGRAPHY FACTOR Kzt
 
For every 1,000 above sea level, atmospheric pressure and corresponding wind pressure is decreased per ASCE 7‐16. Select 0 if unsure or at sea level. ELEVATION ABOVE SEA LEVEL
FT
See help and image below. This is the shortest building dimension. The width of End zone 5 is 10% of this value, 40% of height, or not less than 3’ MIN OVERALL BLDG DIMENSION
FT
This is the average roof height from the peak to the eave. See image below. Your minimum heights will be adjusted to these values:
Exposure B => 30'
Exposure C => 15'
Exposure D => 7' MEAN ROOF HEIGHT, MRH
FT
For buildings over 60 FT, a reduction is permitted for positive pressures based on the actual elevation. Enter the elevation from ground to the lowest opening being analyzed. LOWEST INSTALLATION ELEVATION
FT
If the roof slope is less than 10 degrees, there is a slight reduction in pressure. If complex roof or unsure, set to >= 10°.

 ROOF SLOPE
 
# OF OPENINGS TO ANALYZE  
If yes, the calculaon for area of opening switches from Width * Height to Height * Height/3. It operates on the assumpon that impact shuers are tested infinite width. IMPACT SHUTTER ANALYSIS 
 
             
             
INPUT AREA 2
Positive values represent pressures directed at or against the building. Negative values are pressures pushing outward from inside the building, or creating suction on exterior faces. Expect larger negative values due to building pressurization. CALCULATED PRESSURES
AT EACH OPENING OR COMPONENT
ZONE 5 CORNER DIST 'a' = 
This is your label to help identify the answer on accompanying layout drawings. MARK
(W*L)/144 must be lower than 700ft² to use the C&C method. WIDTH-in
(W*L)/144 must be lower than 700ft² to use the C&C method. HEIGHT-in
Area considered shall be the smaller of W*H or H * H/3
(And shall always be H*H/3 for analysis of Impact Shutters) AREA-ft2
Use zone 5 for openings near building corners (anything within the "a" distance listed above). Use Zone 4 for openings along the midspan of the wall. Refer images below.
If Zone is unclear, use Zone 5 ZONE
POSITIVE NEGATIVE
 
EXAMPLE ILLUSTRATIONS:   Fill out all fields to order certified copies
       
           
             
             
             
             
             
             
             
             
             
             
             
             
             
Version 2.6
© Engineering Express
Updated 7/09/2024
design wind pressure image
design wind pressure image

ASCE 7 Components & Cladding Wall Wind Pressure Calculator

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Calculate components & cladding wall pressures for up to 50 openings. Easily order certified copies for review & permit.

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