Renovating flat roof of steel concrete prefabricated garage

摘要

A steel plate second roof comprises a central plate (5) running in the longitudinal direction of the garage and two lateral plates. On the ground in front of the garage (2) the purlins (3) are connected with the central steel plate and in the area of their ends with their feet (4) to form a unit. The purlins with their feet and connected by the central steel plate are placed as a unit on the flat roof to be renovated and are height-adjusted with the aid of the feet. The steel plates are trapezoidal in shape and can be corrugated. The purlin feet are formed as angle iron sections.