Luaj li cas ntawm ib slab
Kev nthuav qhia los ntawm cov ntaub ntawv
Cov ntaub ntawv no ua rau nws tau luaj li cas ib prestressed slab raws li permanent thiab variable loads, ntev, kev txhawb nqa. Tso cai rau koj txhais tau tias hom prestressed slab thiab nws thickness. Pab tau rau reinforced concrete tsim chaw ua hauj lwm.
