HomeMy WebLinkAboutEngineered Building Specs 09.02.2020BUILDINGS
Sept 02, 2020
Peak Steel Buildings
PO Box 1275
Madison, GA 30650
Re: Job No.: 6758-23822
Preferred Transportation
375 County Road 352, Ste 1040
Rifle, CO 81650
Garfield
WRF 50'-0" W x 60'-0" L x 16'-0" EH Roof Slope 2.0:12
To whom it may concern:
In our professional opinion, the above referenced buildings have been designed to sustain no
less than the requested design loads as listed on the order documents, applied per the
2015 International Building Code specifically as follows:
Risk Category
Dead Load
Collateral Load
Sprinkler Load
Roof Live Load
Ground Snow Load
Roof Snow Load
Wind Speed Veit (3-sec gust) 120 mph
Wind Speed Vasd 93 mph
Serviceability Wind Speed 76 mph
Internal Pressure Coefficient ±0.18
II - Normal
Metal Building Only
1.0 psf (Lights)
0.0 psf
20.0 psf Reducible
47.0 psf Importance Factor Is = 1.0
40.0 psf Thermal Factor Ce = 1.2
Exposure = C
Exposure = 1.0
Slope Factor Cs = 1.0
Wind design is based on an Enclosed building. All building envelope accessories (windows,
doors, etc.) not provided by the metal building fabricator must be designed to sustain no less
than the same wind criteria as the building.
For components, cladding, and MWFRS, deflections involving wind are based on 10-year
serviceability wind pressures.
Seismic Importance Factor le = 1.000
Spectral Response Acceleration, Ss = 0.307
Spectral Response Acceleration, Si = 0.080
Seismic Design Category = B
Seismic Response Coefficient, Cs = 0.1061
Design Spectral Response, SDS = 0.3181
Design Spectral Response, So, = 0.1280
Site Class = D
Design Base Shear, V = 4.60 (Lat) kips
= 4.56 (Long) kips
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Seismic Force -Resisting System
H. Steel Systems not Specifically Detailed for Seismic Resistance
Framing Direction Lateral Longitudinal
Response Modification Factor 3.0 3.0
Deflection Amplification Factor 3.0 3.0
Analysis Procedure Equivalent Lateral Force
Other Loads: None
Design is in accordance with the 2012 AISI North American Specification for the Design of
Cold -Formed Steel Structural Members, the 2010 AISC Specification for Structural Steel
Buildings, the AWS D1.1-10 Structural Welding Code - Steel, the AWS D1.3-08 Structural
Welding Code - Sheet Steel, and generally accepted engineering practices.
The engineer whose seal and signature appears on these documents represents Whirlwind Steel
Buildings, Inc and is not the Engineer of Record (EOR) for the overall construction project. It is
expressly noted that this letter of professional opinion includes only the steel building as designed
and furnished by the metal building fabricator, and specifically excludes all accessories, anchor
rods, foundation, masonry, general contract work, or any field modifications deviating from the
metal building system construction documents.
Sincerely,
Mustapha Chreeide, PE
Sep 15, 2020
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