PEB frame type
Clear-span gable frame
Tapered steel columns and rafters with no interior column: the whole floor is free from wall to wall. The most common PEB frame for warehouses and factories.
Overview
What is a clear-span gable frame?
A rigid steel portal frame made of two tapered columns and two tapered rafters meeting at the ridge. Sections are deepest at the knee, where the bending moment is highest, and slimmer where less steel is needed.
With no interior column, racking, forklifts, production lines and future layout changes are not limited by a column grid. Frames repeat along the building at the bay spacing and are tied together by purlins, girts and bracing.
Uses
When this frame fits
A free floor matters
Warehouses, distribution and production halls where columns would get in the way of racking, vehicles or machines.
The layout may change
Without interior columns, the building can be re-planned for a new tenant or product line later.
Large open halls
Sports halls, exhibition spaces and workshops that need one uninterrupted volume.
Planned extensions
Endwalls can be designed as expandable so new bays bolt on along the length.
Design
What our engineers check
- 01
Span against steel weight
The wider the clear span, the deeper and heavier the rafters. We compare it with a multi-span option when one column line is acceptable.
- 02
Roof slope and drainage
Slope, gutters and downpipes sized for Thai monsoon rainfall.
- 03
Crane and service loads
Overhead cranes, sprinklers, solar panels and MEP hung from the roof are included in the design from the start.
- 04
Wind and seismic zone
Loads to Thai standards for your province, as listed on our PEB solution page.
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
Is a clear-span frame always more expensive than a multi-span frame?
Not always. For narrower buildings clear span is often the simplest choice. For wide buildings a frame with interior columns usually needs less steel. We can price both for your size.
Can I add a crane later?
Only if the frame was designed for it. Tell us about any future crane at the design stage so columns, brackets and foundations allow for it.
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.