Minnesota Administrative Rules
Agency 151 - Labor and Industry Department
Chapter 1303 - MINNESOTA PROVISIONS OF STATE BUILDING CODE
Part 1303.2200 - SIMPLIFIED WIND LOADS

Universal Citation: MN Rules 1303.2200

Current through Register Vol. 48, No. 39, March 25, 2024

Subpart 1. Section 2200.

A. This section applies to the wind loads for the main wind force-resisting systems only.

B. In order to utilize wind loads from this part, the building shall meet the following requirements:
(1) 60 feet or less in height;

(2) height not to exceed least horizontal dimension;

(3) enclosed building;

(4) roof shape - flat, gabled, or hip;

(5) roof slope of 45 degrees maximum;

(6) simple diaphragm building;

(7) not a flexible building;

(8) regular shape and approximately symmetrical;

(9) no expansion joints or separations; and

(10) no unusual response characteristics (for example: vortex shedding, galloping, or buffeting).

Subp. 2. Simplified design wind pressures.

Ps represents the net pressures (sum of internal and external) to be applied to the horizontal and vertical projections of building surfaces. For the horizontal pressures, Ps is the combination of the windward and leeward net pressures. Ps may be determined from the following equation:

Click here to view image

where:

Kzt = Topographic factor as defined in Chapter 26 of ASCE 7.

Palt = Alternative simplified design wind pressure from Table Palt.

TABLE Palt a
Horizontal and Vertical Pressure b
Exp B 25 psf
Exp C 30 psf
Exp D 35 psf

Overhang Vertical Pressure c
Exp B -40 psf
Exp C -48 psf
Exp D -56 psf

aValues are for ultimate wind design (Vult). Multiply by 0.6 for allowable stress design (ASD).

bFor vertical pressure, the above values are negative (upward).

cNegative values are upward.

Statutory Authority: MS s 16B.59; 16B.61; 16B.64; 326B.101; 326B.106; 326B.13

Disclaimer: These regulations may not be the most recent version. Minnesota may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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