单向板肋梁楼盖
one-way plate rib beam building covers
GBF蜂巢芯密肋楼盖
GBF Cast-in-place concrete honey-comb core hollow-ribbed floor
密肋楼盖
close-ribbed foor
Multi-ribbed Floor
ribbed slab floors with shallow beams
waffle slab
单向梁楼盖
floor system with one-way beam
工字形密肋梁
I-shape multi-ribbed beam
井式梁楼盖
floor-slab with crossing beams beneath
空心无梁楼盖
hollow beamless roof
voided flat plat floor
cast-in-place RC hollow flat slab
hollow flat slab
non-beam roofing