The ratio is usually 2: 1. The specification of wood square is usually 5 10cm, which is actually not enough. The following ratio is considered to be 5 10cm. The ratio of beam-slab formwork with thickness less than 15cm to wood square is about 100m2. The formwork thickness is 10 ~ 12m3, the wall thickness is less than 4.5m, and the formwork thickness is 100 m2, which is 18 ~ 20m3.
Wood square, commonly known as square wood, saws wood into squares with certain specifications and shapes according to the actual processing needs, and is generally used as door and window materials, formwork support and roof truss materials in decoration and structural construction, or for making various wooden furniture. It is mainly made of pine, basswood, Chinese fir and other trees and processed into strips with rectangular or square sections. A kind of material commonly used in decoration, there are many models, used to prop up the decorative board outside and play a supporting role. The wood square of the ceiling is generally pine square. General specifications are 4 meters long, with 23cm, 34cm and 44cm.