Minn. R. agency 151, ch. 1303, pt. 1303.2200

Current through Register Vol. 49, No. 20, November 12, 2024

Part 1303.2200 - SIMPLIFIED WIND LOADS

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.

P_s 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, P_s is the combination of the windward and leeward net pressures. P_s may be determined from the following equation:

Click here to view image

where:

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

P_alt = Alternative simplified design wind pressure from Table P_alt.

TABLE Palta
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 (V_ult). Multiply by 0.6 for allowable stress design (ASD).

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

^cNegative values are upward.

Minn. R. agency 151, ch. 1303, pt. 1303.2200

32 SR 10; L 2007 c 140 art 4 s 61; art 13 s 4; 44 SR 537

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