ASCE 7 Calculator

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Uplift calculations are prepared based on ASCE 7 2010 Standards. Due to unknown variables associated with each roofing system and structure, Carlisle disclaims responsibility concerning the accuracy of these calculated results, the relevance of the results to the performance of the installed roofing system and the appropriate use of the program for any geographic location. A licensed engineer should verify the results.

Project Information
Job Name Project #1	City Chambersburg	State/Prov, Country PA, US
User Name John Doe	Email jdoe@somesite.com
Street Address 1144 Kennebec Drive	City Chambersburg	State/Prov, Country PA, US
Roof Dimensions (ft.) 3 x 3	Building Height (ft.) 15	Basic Wind Speed (mph) 90
Exposure Type B	Internal Pressure Enclosed Buildings (0.18)	Building Category (IF) Category II
Membrane Type TPO	Deck Type Structural Concrete	Safety Factor 1

Basic Uplift Pressure
Constant	Kz	Kzt	Kd	Vz²	I	Qz
0.0256	Velocity Pressure Coefficient	Wind Speed Coefficient	Directionality Factor	Basic Wind Speed	Allowable Strength Load	Lbs./Sq. Ft.
0.00256	0.7	1	0.85	13225	0.6	12.1

Zone Uplift Pressure
Pressure Zones	Coefficient	Basic Velocity Pressure	Zone Uplift Pressure (psf)
Zone 1 (Field)	-1	12.1	-14.3
Zone 2 (Perimeter)	-1.8	12.1	-24
Zone 3 (Corner)	-2.8	11.6	-43.3

Zones	Zone Uplift Pressure (psf)	Safety Factor	Design Pressure (psf)
1 - Field	-17.2	1	-17.2
2 - Perimeter	-28.8	1	-28.8
3 - Corner	-43.3	1	-43.3
Note: If parapet heights are 3-ft (0.915-m) or greater, perimeter pressures can be used for corner pressures.

Roof Zones
Zone 3	Zone 2	Zone 3
Zone 2	Zone 1	Zone 2
Zone 3	Zone 2	Zone 3
Note: Enhanced Perimeter Width: 3 ft.

Mechanically Fastened

Mechanically Fastened Membrane System Rated for 90 psf

Fields Sheet Width: 10-ft.

Fastener Spacing: 6.0-in.

Roof Zone

Maximum Space Between Rows of Securement

Number of Rows of Securements

Zone 1 (Field Area)

9.5 ft.

Zone 2 (Perimeter Area)

6 ft.

Zone 3 (Corner Area)

6 ft.