What is the Thickness of Prefabricated Slab Houses?

The thickness of prefabricated slab houses typically ranges from 100 to 400 millimeters, with the specific value depending on the building type, load requirements, and usage scenarios. The following provides an explanation from the perspective of different building types:

For residential buildings, the thickness of prefabricated slabs is usually between 120 and 150 millimeters. These buildings are mainly low-rise or multi-story, with relatively low load requirements. For example, in ordinary residential buildings and apartments, a 120-millimeter-thick prefabricated slab can meet basic load-bearing needs. If the building has more floors or has areas with concentrated local loads (such as balconies), the thickness may increase to 150 millimeters. Cement prefabricated slabs commonly use 120mm and 150mm specifications in such scenarios.

For split-level residences or villas, the thickness of prefabricated slabs is between 150 and 200 millimeters. These buildings have larger spatial spans (such as open-plan living rooms) or special loads (such as rooftop gardens and swimming pools), so increasing the slab thickness is necessary to enhance structural rigidity. For example, if a villa with a basement has a split-level design on the ground floor, the thickness of the prefabricated slab is often set at 180 millimeters to balance load-bearing capacity and cost-effectiveness.

For commercial buildings, the thickness of prefabricated slabs varies according to their functions. Office buildings usually use slabs with a thickness of 120 to 150 millimeters. If the building has more floors or contains equipment floors, the thickness may increase to 180 millimeters. Shopping malls or supermarkets, due to high foot traffic and concentrated goods storage, generally have prefabricated slabs with a thickness between 150 and 200 millimeters. For example, the shelving areas in large supermarkets may use 200-millimeter-thick slabs to withstand dynamic loads.

For industrial buildings, the thickness of prefabricated slabs increases significantly, with a common range of 180 to 300 millimeters for factory buildings or warehouses. These scenarios need to cope with the vibration loads from heavy equipment (such as cranes and punching machines) or meet special requirements such as fire and explosion resistance. For example, the prefabricated slabs in automobile manufacturing workshops are often 250 millimeters thick and are equipped with double-layer steel mesh to enhance crack resistance.

For special scenarios such as underground parking garages, the thickness of prefabricated slabs can reach 300 to 400 millimeters. These structures need to simultaneously meet requirements for compression resistance (vehicle loads), water impermeability (groundwater pressure), and durability. The thickness design must comprehensively consider factors such as the thickness of the overlying soil and the loads from fire trucks. For example, underground parking garages with civil air defense functions may have prefabricated slabs close to 400 millimeters thick to meet wartime protection standards.