The Effect of Green Roof Load on the Structural Design of Roof Slab of LH Housing and Service Facilities

This paper contains structural analysis and design regarding how three types of green roof load affect roof slab design of LH housing and facilities. Based on the Structural analysis, an appropriate Roof slab rebar guideline and roof slab thickness have been set up for the green roof load which takes effect on structural design of roof slab. Result of structural analysis and design has been made as follows. Roof slabs can arrange the slab rebar(D10) within the 200~250mm disregarding the types of the green roof load and the pattern of green roof load; also, slab thickness can be designed within 150mm. Moreover, even if the concrete design strength of roof slab changes to 24, 27, and 30MPa, D10 rebar can still be arranged within 200~250mm, and 150mm for slab thickness. Two-way slab of commercial building was appeared to be arranged by slab rebar(D10) within 200mm and 150mm for slab thickness disregarding the soil type or the soil thickness of green roof.