1016.3 Add the following section:

1016.3 Add the following section:

1016.3.1 When drains are provided for planter boxes, such drains shall enter into the sanitary or storm drainage plumbing system by discharging into an approved sump, receiving tank or sand settling tank. No trap shall be installed between the planter box and any approved receptor. Sizes of drains shall conform to Table 703.2.

Catch basins or sumps to drain surface water or collect subsoil drainage shall meet the following requirements:

(1) The catch basin or sump shall be poured in place, and all sides and bottom shall be watertight.

(2) A removable metal grill approved for applied design loads shall be placed on top with a screen to prevent mosquito breeding.

(3) Each catch basin shall be served with its own trap and cleanout, and shall connect to the storm or sanitary system independently.

(4) If inlet is located below the building sewer or drain, a sump pump minimum of 1-1/2" (38.1 mm) outlet may be used. The bottom of sump shall maintain a 1' - 0" (304.8 mm) distance from the inlet, creating a 1' - 0" (304.8 mm) sand trap.

(5) If the depth of the sump is over 5' - 0" (1.52 m) a larger catch basin shall be required with a permanent ladder securely bolted to the interior to provide access for maintenance. A minimum clear space of 30" × 30" (762 mm × 762 mm) shall be provided.

(6) A listed and approved plastic catch basin may be installed in areas of residential buildings that are not subjected to any vehicular traffic and shall be installed on a concrete base to prevent settling, provided all other code requirements of this section and the listing and installation requirements of such catch basin are met.

Chapter 11 STORM DRAINAGE