A. Construction Materials And Methods: These requirements specify minimum acceptable construction materials and methods. Alternate materials and methods not specified herein may be approved for use by the building officer upon the submission of evidence satisfactory to him that their performance in use will be at least equivalent to that of the materials and methods specified herein. It is required that such evidence include adequate reports and test data from a disinterested and qualified testing laboratory, or proven long term service records, or analysis of performance made in accordance with well established principles of mechanics, or professional disinterested sources. Compliance with the standard specifications and test methods listed in this chapter will be required. All work to be executed in a neat, workmanlike manner.
B. Loads:
1. All parts of dwellings and accessory buildings and structures shall be designed, constructed, and maintained to support safely their own weight and all other loads and forces to which they may be subjected.
2. Assumed minimum live loads, uniformly distributed, for design purposes:
Ceiling or attic floor joists, no storage | None | |
Attic floors, limited storage only | 20 pounds per square foot | |
Living area floors | 40 pounds per square foot | |
Girders | Dead loads of floor, partition and ceiling constructions plus 50 percent of assumed live loads of floor plus combined dead and live loads of roof | |
Roofs, either pitched or flat | 30 pounds per square foot normal to the roof surface |
3. Wind loads on vertical faces: 30 pounds per square foot horizontally, any direction. Roofs or parts with slopes higher than 30 degrees: 30 pounds per square foot acting inward normal to surface, on windward slope only. Lifting force: 30 pounds per square foot. To prevent sliding or overturning, anchor roofs to walls and columns, and walls and columns to foundations.
C. Special Conditions And Tests: When special conditions exist or arise during construction, which necessitate additional precautions, the building officer may require work in excess of these requirements. Building officer may require tests in accordance with this chapter, at expense of owner. (Ord. 2008-09-01, 9-24-2008)