CHAPTER 3129 – LOADS

3129.01   Nominal Uniformly Distributed Live Floor Loads

3129.02   Snow Load

3129.03   Wind Load

3129.04   Special Wind Conditions

3129.05   Overturning and Sliding

3129.06   Stresses During Erection

3129.07   Wind Loads on Signs, Tank Towers and Chimneys

   Note: The legislative history of this chapter, except where specifically noted at the end of a section, is as follows: Ordinance No. 1116-A-85, passed February 10, 1986.

Statutory reference:
   Structural design, OAC Ch. 4101:1-16

§ 3129.01 Nominal Uniformly Distributed Live Floor Loads

   The live floor loads assumed for purposes of design shall be the greatest loads that probably will be produced by the intended occupancies or uses, provided that the live floor loads to be considered as uniformly distributed shall be not less than the values given in the following Table A, and except that such live floor loads shall be subject to reduction where and as provided in OBBC.

   Table A

 

Occupancy or Use	Live Loads for Ground or First Floors Only (Lb. per square foot)
Stores:
Retail	100
Wholesale	100
For all other floors see OBBC

 

§ 3129.02 Snow Load

   BOCA Section 911.0 entitled “Snow Load” is hereby amended to read as follows:

   Section 911.0 Snow Load.

   (a)   In addition to the dead load, and in addition to the wind load, roofs shall be designed for the loads per square foot of horizontal projection given in the following Table:

 

Slope of Roof	Roof Load per Square Foot of Horizontal Projection
Less than 4 vertical to 12 horizontal	30 pounds
4, or more, vertical to 12 horizontal, up to 12 vertical to 12 horizontal	20 pounds
Over 12 vertical to 12 horizontal	0 pounds

 

   Ordinary roofs, either flat, or pitched shall be designed for the live loads specified in the Table above or the Snow Load specified in OBBC, whichever is greater.

§ 3129.03 Wind Load

   BOCA Table 912.1 of Section 912.0 entitled “Wind Load” is hereby amended to reflect the following:

   Except as provided in OBBC and this Building Code buildings and other structures shall be designed and constructed to withstand the horizontal pressure in each height zone in the following Table, allowing for wind from any direction; the height to be measured from the average level of the ground adjacent to the building or other structure.

Table WP
Design Wind Pressures for Various Height
Zones of Buildings or Other Structures

 

Height Zone (Ft.)	Wind Pressure (Lbs. per Sq. Ft.)
Less than 50*	20
50 to 99	24
100 to 325	28