Portal Frame Roof Detail

The primary steelwork consists of columns and rafters which form portal frames and bracing.

Portal frame roof detail.

Although the use of steel portal frames is well established in the uk there is no publication which defines best practice in this form of construction. A portal frame building comprises a series of transverse frames braced longitudinally. In countries where this technology is highly developed the steel portal frame is the dominant form of structure for single storey industrial and commercial buildings. The end frame gable frame can be either a portal frame or a braced arrangement of columns and rafters.

Steel roof rafter is illustrated with an ipe profile steel section. Within this major market sector the steel portal frame has become the most common structural form in pitched roof buildings because of its economy and versatility for a wide range of spans. It has become the most common structural form in pitched roof buildings because of its economy and versatility for a wide range of spans. Typical hangar portal frame edge eaves beam rain water gutter z purlins sandwich panel roof detail.