§ 16.04.021. Structural design classifications.

A.

Allowable Soil Bearing Pressure. Footings for structures which meet the requirements of Section 1805 of the Uniform Building Code shall be sized using allowable soil pressure of one thousand five hundred psf for total loads unless otherwise dictated in writing by a registered civil engineer or architect. All other structures shall have a foundation report prepared by a civil engineer. The report shall be in written form and shall include the information required in Section 1804.3.

B.

Wind Design Criteria.

1.

Buildings: The minimum basic wind speed for determining design wind pressure shall be ninety miles per hour.

2.

Exposure: Exposure C in Table 16-G shall be utilized for determining building or structure design.

3.

Signs: A horizontal pressure of fifty psf, and a vertical pressure of thirty-five psf acting upward or downward for the worst case combination with the horizontal pressure shall be utilized when designing signs and signposts. Allowable soil lateral bearing value for embedded sign supports shall be one hundred fifty psf per Table 18-1-A plus short term increases as per the applicable footnotes. Higher soil values may be used if recommended by a civil engineer in a written foundation report for the subject site.

C.

Seismic Design Requirements. The city is located in Seismic Zone 3.

D.

Snow Load Requirements. Snow load design shall comply with Section 2305(d) using a roof snow load of sixty psf for commercial buildings and forty psf for residential buildings. Other loading effects of snow including unbalanced load, eaves, drift loading, etc., shall be computed using the Appendix Chapter 23, Division I, omitting Section 2318, and using a Pf of sixty psf for commercial buildings and a Pf of forty psf for residential buildings.

(Ord. 333-95 §3, 1995: Ord. 274-89 §3, 1990).