Building Design Criteria! RYAN S. HELLWIG, PE ! STRUCTURAL ENGINEER !
September 29, 2010
Re:New Horse Barns
General Design Criteria
3 County Fairgrounds
41 Fair Street
Northampton, Mass.
Building Design Criteria per Chapter 16, Massachusetts State Building Code, 7 Edition.th
Building Classification Category I - Agricultural Facilities
rRoof:Live Load L = 19 psf
Snow:Ground Snow Load = 55 psf
Importance Factor I = 0.8
tTemperature Factor C = 1.2 - Unheated Building
eExposure Factor C = 1.0
fFlat Roof Snow Load: p = 37 psf
sSloped Roof Factor C = 1.0 - 5:12 pitch w/o slippery, unobstructed surface
Unbalanced snow loads = 55 psf on leeward side + 11 psf on windward side
Wind:Wind Speed V = 100 mph (3 second gust)
Importance Factor I = 0.87
Exposure B
Method 1 - Simplified Procedure
Adjustment Factor for Height & Exposure ë = 1.00
Flood:Base Flood Elevation BFE = 125 ft
Appendix §120.G501.4 - Enclosed spaces below the BFE shall not be used for
human occupancy, except egress, incidental storage, etc. Fully enclosed
spaces shall be designed to automatically equalize hydrostatic forces by
allowing for entry and exit of floodwaters.
ASCE 24 - Table 1-1, Footnote a - Certain agricultural structures may be
exempt from some of the flood-proofing provisions per §C1.4.3
ASCE 24 §C1.4.3 - Certain agricultural structures may be wet flood-proofed.
Seismic:§1614.1.2 - Agricultural buildings w/ incidental human occupancy are exempt from
the requirements of the Earthquake Loads provisions
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