PEB frame type
Arched roof frame with 1 interior column
Curved steel rafters with one interior column line: an arched roof over a wide building, with lighter rafters than a clear-span arch.
Overview
What is an arched roof frame?
A rigid frame whose rafters follow a curve instead of straight slopes. One interior column line shortens the spans, so the curved rafters stay slim even on wide buildings.
The arched profile gives a softer, architectural look while keeping the simple bolted construction of a PEB frame.
Uses
When this frame fits
Markets and community halls
A recognisable roof over a busy open floor.
Showrooms and retail
A curved roof line as part of the brand image.
Wide warehouses
An arched look where one column line is acceptable.
Covered areas
Large roofs over open-sided spaces.
Design
What our engineers check
- 01
Rafter curve
The curve is built from segments or curved members, sized for shipping.
- 02
Purlins on the curve
Purlin spacing set for the roof sheet radius used by the local roofing contractor.
- 03
Interior column
Placed to suit the floor layout.
- 04
Gutters and drainage
Water collects at the eaves; gutters sized for the full roof.
Designed, made and delivered by one team
From your building size to a frame ready to erect
Send size and use
Width, length, height, location and any crane – we propose the right frame type.
Designed as a 3D IFC model
Every member of the building in one model, checked to international and Thai codes.
Made in our own factory
Cut, drilled, welded and painted in a certified factory.
Shipped CIF / DDP
To a Thai port or to your site, with full documents.
10 standard frames
Compare with other frame types
FAQ
Questions Thai clients ask us
What is the difference from the arched roof truss?
Here the rafters are solid members with one interior column; the arched truss is a deeper lattice that spans the full width without interior columns.
Is an arched roof more expensive?
Usually slightly, because of the curved members and sheeting. We price it against a straight gable so you can compare.
Not sure which frame suits your building?
Send us your building size and use. Our engineers propose the frame type, steel weight and a CIF/DDP price for your site in Thailand.