BC 1603 — Construction Documents

Section BC 1603: Construction Documents

1603.1 General. Construction documents shall include drawings that show the sizes, sections and relative locations of structural members with floor levels, column centers and offsets fully dimensioned. The design loads and other information pertinent to the structural design required by Sections 1603.1.1 through 1603.1.10 shall be clearly indicated on such drawings of parts of the building or structure. Exception: In lieu of the requirements of 1603.1.1 through 1603.1.10, construction documents for buildings constructed in accordance with the conventional light-frame construction provisions of Section 2308 shall include drawings that indicate the following structural design information: 1. Floor and roof dead and live loads. 2. Ground snow load, Pg. 3. Basic design wind speed, V, miles per hour (mph) (km/hr) and allowable stress design wind speed, Vasd, as determined in accordance with Section 1609.3.1 and wind exposure. 4. Seismic design category and site class. 5. Flood design data, if located in flood hazard areas. 6. Design load-bearing values of soils or rock under shallow foundations and/or the design load capacity of deep foundations. 1603.1.1 Floor live load. The uniformly distributed, concentrated and impact floor live load used in the design shall be indicated for floor areas. Use of live load reduction in accordance with Section 1607.11 shall be indicated for each type of live load used in the design. 1603.1.2 Partition loads. The equivalent uniform partition loads or, in lieu of these, a statement to the effect that the design was predicated on actual partition loads. 1603.1.3 Roof live load. The roof live load used in the design shall be indicated for roof areas (Section 1607.13). 1603.1.4 Roof snow load data. The ground snow load, Pg, shall be indicated. The following additional information shall also be provided, regardless of whether snow loads govern the design of the roof: 1. Flat-roof snow load, Pf. 2. Snow exposure factor, Ce. 3. Snow load importance factor, Is. 4. Thermal factor, Ct. 5. Slope factor(s), Cs. 6. Drift surcharge load(s), Pd, where the sum of Pd and Pf exceeds 20 psf (0.96 kN/m2). 7. Width of snow drift(s), w. 1603.1.5 Wind design data. The following information related to wind loads shall be shown, regardless of whether wind loads govern the design of the lateral force-resisting system of the structure: 1. Basic design wind speed, V, miles per hour (km/hr) and/or allowable stress design wind speed, Vasd, as determined in accordance with Section 1609.3 and 1609.3.1. 2. Risk category. 3. Wind exposure. Applicable wind direction if more than one wind exposure is utilized. 4. Applicable internal pressure coefficient. 5. Design wind pressures to be used for exterior component and cladding materials not specifically designed by the registered design professional responsible for the design of the structure, psf (kN/m2). 6. Design base shear. 1603.1.6 Earthquake design data. The following information related to seismic loads shall be shown, regardless of whether seismic loads govern the design of the lateral force-resisting system of the structure: 1. Risk category. 2. Seismic importance factor, Ie. 3. Mapped spectral response acceleration parameters, SS and S1. 4. Site class. 5. Design spectral response acceleration parameters, SDS and SD1. 6. Seismic design category. 7. Basic seismic force-resisting system(s). 8. Design base shear(s). 9. Seismic response coefficient(s), CS. 10. Response modification coefficient(s), R. 11. Analysis procedure used. 1603.1.7 Geotechnical information. The design load-bearing values of soils or rock under shallow foundations and/or the design load capacity of deep foundations shall be shown on the construction documents. 1603.1.8 Flood hazard areas. Construction documents for buildings and other structures located in flood hazard areas shall comply with provisions of Section G104.2.1. 1603.1.9 Special loads. Special loads that are applicable to the design of the building, structure or portions thereof, including but not limited to the loads of machinery or equipment, and that are greater than the specified floor and roof loads shall be specified by their descriptions and locations. 1603.1.9.1 Photovoltaic panel systems. The dead load of rooftop-mounted photovoltaic panel systems, including rack support systems, shall be indicated on the construction documents. 1603.1.10 Superimposed dead loads: The uniformly distributed superimposed dead loads used in the design shall be indicated for floor and roof areas.