Section 1002 - Design Specifications for Mortar Racks, Troughs, Drums, and Ready Boxes(a) Mortar racks shall be limited to a maximum of 10 tubes per unit. The base and ends of the rack shall be nominal 2 inch thick lumber. The inside width shall be equal to the outside diameter of the mortar tube. Each mortar tube shall be separated by horizontal or vertical blocks nominally 2 inches thick and 4 inches wide. Side braces for mortar racks of 3 inch size mortars and up shall be 1 inch x 6 inch nominal lumber or 1/2 inch x 4 inch plywood securely fastened by nails, screws, or attached with construction grade staples along the top and bottom of the rack. A diagonal side brace must be employed on all mortar racks with more than 5 mortar tubes. Mortar racks shall not incorporate steel brackets or other metallic parts in their construction with the exception of nails, screws, or construction-grade staples. Metallic braces shall not be fastened to mortar racks at the firing site.(b) Troughs shall not be more than 8 feet in length. Troughs may be placed in a continuous row provided they are stable and secure. The sides, bottom and ends of troughs shall be minimum 3/4 inch plywood or nominal 2 inch lumber, except in cases where the surface at the bottom of the trough is sufficiently stable to support the firing of the mortar, no bottom shall be required. Troughs shall be secured by minimum 3/8 inch through bolts, rods or angle iron "U" brackets at each end and center to prevent bulging.(c) Drums shall be constructed of steel, aluminum or plastic.(d) Ready boxes shall be constructed of wood not less than 1/2 inch thickness or 3/8 inch plywood, chipboard or presswood. Ready boxes shall not be equipped with any type of hold open device. Note: For illustrations of typical mortar racks, troughs and drums, see Diagrams A, B and C immediately following this section.Cal. Code Regs. Tit. 19, § 1002
1. Repealer of former section 1002 and new section filed 6-26-91 as an emergency; operative 6-26-91 (Register 91, No. 48). A Certificate of Compliance must be transmitted to OAL by 10-24-91 or emergency language will be repealed by operation of law on the following day.
2. Emergency language repealed by operation of law. Repealer of former section 1002 and new section filed 4-14-92; operative 5-14-92 (Register 92, No. 21). Note: Authority cited: Section 12552, Health and Safety Code. Reference: Section 12552, Health and Safety Code; and Section 55.200, 27 Code of Federal Regulations.
1. Repealer of former section 1002 and new section filed 6-26-91 as an emergency; operative 6-26-91 (Register 91, No. 48). A Certificate of Compliance must be transmitted to OAL by 10-24-91 or emergency language will be repealed by operation of law on the following day.
2. Emergency language repealed by operation of law. Repealer of former section 1002 and new section filed 4-14-92; operative 5-14-92 (Register 92, No. 21).