SECTION 748:20-15-8. IPC®2015 Chapter 3 General Regulations

  Chapter 3 of the IPC® 2015 is adopted with the following modifications:

(1)   Section 305.3 Pipes through foundations walls. This section has been modified to require the relieving arch or pipe sleeve pipe to conform with the materials and standards listed in Table 702.2 or as approved by the authority having jurisdiction. This section has been modified to read: 305.3 Pipes through foundation walls. Any pipe that passes through a foundation wall shall be provided with a relieving arch or pipe sleeve pipe shall be built into the foundation wall. The relieving arch or pipe sleeve shall conform to one of the materials and standards listed in Table 702.2, or as approved. The sleeve shall be two pipe sizes greater than the pipe passing through the wall.

(2)   Section 305.4.1 Sewer depth. This section has been modified to include a depth for the septic tank connection unless otherwise approved by the authority having jurisdiction. This section has been modified to read: 305.4.1 Sewer depth. Building sewers that connect to private sewage disposal systems shall be a minimum of 12 inches (305 mm) or as approved by the authority having jurisdiction below finished grade at the point of septic tank connection. Building sewers shall be a minimum of 12 inches (305 mm) below grade.

(3)   Section 312.2 Drainage and vent water test. This section has been modified to change the test from a requirement of a 10 foot (3048 mm) head of water to a requirement of a 5 foot (1524 mm) head of water. This section has been modified to read: 312.2 Drainage and vent water test. A water test shall be applied to the drainage system either in its entirety or in sections. If applied to the entire system, all openings in the piping shall be tightly closed, except the highest opening, and the system shall be filled with water to the point of overflow. If the system is tested in sections, each opening shall be tightly plugged except the highest openings of the section under test, and each section shall be filled with water, but no section shall be tested with less than a 5 foot (1524 mm) head of water. In testing successive sections, at least the upper 5 feet (1524 mm) of the next preceding section shall be tested so that no joint or pipe in the building, except the uppermost 5 feet (1524 mm) of the system, shall have been submitted to a test of less than a 5 foot (1524 mm) head of water. This pressure shall be held for at least 15 minutes. The system shall then be tight at all points.

(4)   Section 312.3 Drainage and vent air test. This section has been modified to change the equivalent pressure for the inches of mercury to match the feet of water change made for the drainage and vent test. This section has been modified to read: 312.3 Drainage and vent air test. Plastic piping shall not be tested using air. An air test shall be made by forcing air into the system until there is a uniform gauge pressure of 2.5 psi (17.25 kPa) or sufficient to balance a 5-inch (127 mm) column of mercury. This test shall be held for a period of not less than 15 minutes. Any adjustments to the test pressure required because of changes in ambient temperatures or the seating of gaskets shall be made prior to the beginning of the test period.

(5)   312.6 Gravity sewer test. This section has been modified to allow the authority having jurisdiction to determine if this test is required and change the test from a 10 foot (3048 mm) head of water test to a 5 foot (1524 mm) head of water test. This section has been modified to read: 312.6 Gravity sewer test. Where required, gravity sewer tests shall consist of plugging the end of the building sewer at the point of connection with the public sewer, filling the building sewer with water, testing with not less than a 5 foot (1524 mm) head of water and maintaining such pressure for 15 minutes.

(6)   Section 312.10.1 Inspections. This section was modified to allow for third-party inspections to be accepted by the code official. This section has been modified to read: 312.10.1 Inspections. Annual inspections shall be made of all backflow prevention assemblies and air gaps to determine whether they are operable, in accordance with Chapter 1, Sections 104.3 and 105.3.2

[Source: Added at 29 Ok Reg 1659, eff 11-1-12; Amended at 32 Ok Reg 2270, eff 11-1-15; Amended at 34 Ok Reg 2107, eff 9-15-17]