Five to six inches is recommended if the concrete will receive occasional heavy loads such as motor homes or garbage trucks.
Standard floor thisckness off grade house.
Joists in home construction are usually made with 2 by 10 or 2 by 12 lumber.
Standard concrete floor slab thickness in residential construction is 4 inches.
Plywood is usually used as subfloor today.
To prepare the base cut the ground level to the proper depth to allow for the slab thickness.
Floor joists or beams provide the below surface support for the wood subfloor of a room.
Basement floor thickness can be a problem if the concrete is too thin.
Floor joists are made from 2 by 8 inch or 2 by 10 inch lumber or from engineered quiet beams which are made from a thin layer of chipboard on edge between two lumber caps forming an i shape.
Different plywoods use various materials and methods of manufacture depending on the application for which they re intended.
There are many types sizes and configurations of plywood.
A subfloor is a wooden structural substrate to which durable finished flooring is attached.
The bulk of the floor s thickness comes from the joists which are the horizontal beams that carry the floor s weight.