Section 4495 - Expandable or Multiple-Section Commercial Modular Ducts(a) Expandable or multiple-section commercial modulars may have ducts of the heating system installed in the various units. The points of connection must be so designed and constructed that when sections are fully expanded or coupled, the resulting duct joint will conform to the requirements of this subarticle.(b) Crossover duct installations shall be designed to be effectively supported. The installation shall be designed to provide a minimum clearance of four (4) inches between the bottom of the ducts and the ground.Cal. Code Regs. Tit. 25, § 4495
1. Amendment filed 9-7-73; effective thirtieth day thereafter (Register 73, No. 36).
2. Amendment filed 12-7-79; effective thirtieth day thereafter (Register 79, No. 49).
3. Amendment of section heading, section and NOTE filed 9-19-2011; operative 10-19-2011 (Register 2011, No. 38). Note: Authority cited: Section 18015, Health and Safety Code. Reference: Section 18025, Health and Safety Code.
1. Amendment filed 9-7-73; effective thirtieth day thereafter (Register 73, No. 36).
2. Amendment filed 12-7-79; effective thirtieth day thereafter (Register 79, No. 49).
3. Amendment of section heading, section and Note filed 9-19-2011; operative 10-19-2011 (Register 2011, No. 38).