Arched hangar

ExperimentalUpdated: 2026-10-19

Frame

The hangar is made of bent steel arches every 1.5–3 m standing on a knee wall of concrete blocks or cast concrete. The knee wall sits on a strip footing along both long sides. Timber purlins run along the arches, with cross bracing in the end bays. Closed ends have posts up to the arch and a gate frame.

You enter the span, length, arch rise, knee wall and arch spacing. The system works out the arch length, purlins, footing, knee wall blocks and covering area.

Hangar frame 15 × 24 m: arches every 2 m on a 1.2 m block knee wall, purlins, end posts and a gate frame · View generated by Statyk from sample parameters.

Covering

The covering can be PVC tent fabric tensioned over the arches or curved steel sheet. You can also choose the frame alone. Closed ends are covered too, except for the gate.

A tent hangar needs snow cleared in winter. The manufacturer or a structural engineer sizes the arches and tensioning for the snow zone.

Arched hangar with PVC tent: 15 × 24 m, 7.7 m high, 5 × 4.5 m gate · View generated by Statyk from sample parameters.

Rules and permits

- The arch span counts as the distance between supports. Over 6 m the hangar is no longer a simple structure (STR 1.01.03:2017 item 31), and over 12 m it is a special structure. Both need a building permit.

- For a smaller hangar the group is set by area and height, as for other auxiliary farm buildings.

- Snow load on the curved roof and fire separation distances for PVC tent are not calculated. The system flags these rules as unverified — a structural engineer and designer must assess them.

Start with this example

Example project: drawings and material quantities