Precast concrete beams and block floor 2

• THe T beams are placed at 270 mm centres with their ends bearing 1.2 on or into brick walls
• The hollow blocks are then placed between the beams
• The floor is finished with a layer of construction concrete topping , 50mm thick spread and levelled ready for a screeed or power floated finish
• The purpose of the constrictional concrete topping is to spread the loads on the floor over the blo ks and column and beams
• THe underside , or soffit , of the floor is covered with laster or will provide support for a suspended ceiling .
• WAll taised to acts as formwork for concrete
• 1B wall raised after concrete has set
• Hollow concrete block and between beams
• T section pre cast concrete beams
• eams built 1.2 into walls