1: scaffold (scaffold) refers to the construction site for workers operation and solve the vertical and horizontal transportation and erection of all kinds of support. Architecture of the generic term, refers to the construction site in exterior, interior, or higher storey height can't construction directly.

Mainly for construction personnel and operation safety net or periphery palisade and high altitude installation components, etc., to put it bluntly, is which scaffolding materials usually have: bamboo, wood, steel or synthetic materials. Some works also use scaffolding when the template is used, in addition in the advertising industry, municipal, transportation, mining and other departments is also widely used.
 

2: choose different USES of different types of construction scaffolding and formwork. Bridge support rack bowl of scaffold, has used the door scaffolding. The main structure of scaffold for construction land use fastener scaffold, scaffolding poling of the longitudinal spacing generally 1.2 ~ 1.8 m; Horizontal distance average of 0.9 ~ 1.5 m.
Scaffolding compared with the general structure, the working conditions has the following features:

1, by load variation;
2, fasteners, belong to semi-rigid connection nodes and node rigid size is associated with fastener quality, installation quality, node performance there is a big variation;
3, scaffolding structure and component of initial defects, such as initial bending of bar, rust, erection of dimension error, the eccentric load, etc.;

4, and the wall connection, bigger binding variation on the scaffolding. The above accumulation and statistical data, the study of the problems of the lack of system does not have independent probability analysis condition, so the structural resistance adjusting multiplied by the coefficient of less than 1 its value system with using the safety factor of the calibration.