How to deal with the basis of the stairs
Cushion, ladder beam, followed by the upward step. So that the basic part of the stairs processing is very simple.
Under normal circumstances, stairs do not have to set the basis alone. Whether it is brick or frame structure of the house, as long as there is
Stairs, which must be connected with the foundation of the building, such as the ring beam, column foundation and so on.
The bottom of the stairs on the cushion is the TL on the OK ah
