Prestressed reinforced concrete beam of constant cross- section over its entire length, with a channel-shaped lower part and walls bent in half, for various arrangements and uses in industrial and commercial roofing in general

摘要

This relates to a new prestressed reinforced concrete roofing beam of constant cross-section which can be laid with different inclinations to produce flat or shed roofs. The beam has a channel-shaped cross-section with limbs divided into two lengths to encourage fire resistance, rigidity for static purposes, and the discharge of rainwater. IMAGE