13 & 14 Building Code Updates (2)

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Amend Section 404.12, Minimum burial depth, to read as follows: 404.12 Minimum burial depth. Underground piping systems shall be installed a minimum depth of 18 inches (458 mm) top of pipe below grade. Delete Section 404.12.1. Individual outdoor appliances, in its entirety. Amend Section 406.4, Test pressure measurement, to read as follows: 406.4 Test pressure measurement. Test pressure shall be measured with a monometer or with a pressure -measuring device designed and calibrated to read, record, or indicate a pressure loss caused by leakage during the pressure test period. The source of pressure shall be isolated before the pressure tests are made. Mechanical gauges used to measure test pressures shall have a range such that the highest end of the scale is not greater than five times the test pressure. Spring type gauges do not meet the requirement of a calibrated gauge. Amend Section 406.4.1, Test pressure, to read as follows: 406.4.1 Test pressure. The test pressure to be used shall be no less than 6 psig (20 kPa gauge), or at the discretion of the Code Official, the piping and valves may be tested at a pressure of at least six (6) inches (152 mm) of mercury, measured with a manometer or slope gauge. For tests requiring a pressure of 3 psig, diaphragm gauges shall utilize a dial with a minimum diameter of three and one half inches (3 1/z"), a set hand. 1110 pound incrementation and pressure range not to exceed 15 psi for tests requiring a pressure of 3 psig. For tests requiring a pressure of 10 psig. diaphragm gauges shall utilize a dial with a minimum diameter of three and one-half inches (3 1/z"), a set hand, a minimum of 2/10 pound incrementation and a pressure range not to exceed 50 psi. For welded piping, and for piping carrying _ag s at pressures in excess of fourteen (14) inches water column pressure (3.48 kPa)(1/2 psi) and less than 200 inches of water column pressure (52.2 kPa) (7.5 psi), the test pressure shall not be less than ten (10) pounds per square inch (69.6 kPa). For piping carrying gas at a pressure that exceeds 200 inches of water column (52.2 kPa) (7.5 psi), the test pressure shall be not less than one and one-half times the proposed maximum working pressure. Diaphragm gauges used for testing must display a current calibration and be in good working condition. The appropriate test must be applied to the diaphragm gauge used for testing. 51