Roof beams specified around the building

ZSJH fabricates steel roof beams to approved drawings for factory roofs, workshops and industrial extensions. The beam package can include rolled or welded built-up sections, end plates, bolt holes, stiffeners and designed splices. Beam geometry is coordinated with the column grid, roof slope, purlins and bracing.

Reference building geometry

These are building-level reference inputs, not fixed dimensions or a load rating for an individual roof beam. A sloping roof rafter or transport segment does not necessarily have the same length as the building span. Roof dead/live loads, wind, snow, suspended services and solar equipment where applicable must be included in the design brief.

Beam section and connection details

Welding finish and acceptance

Welding matched to the beam details

For welded built-up beams, the process is selected to suit the steel grade, plate thickness, joint geometry and welding position. Submerged arc welding can be considered for long flange-to-web seams; gas-shielded arc welding for end plates and stiffeners; shielded metal arc welding where suitable for the joint and approved procedure. The confirmed route follows the project Welding Procedure Specification (WPS).

Specify the applicable welding code and edition in the order documents. AWS D1.1/D1.1M may be requested for structural steel work, subject to project review and agreement. Weld sizes, penetration requirements, procedure and personnel qualifications, preheat and interpass controls follow the agreed code, drawings and WPS; the code name alone does not define the entire inspection scope.

Protection for the service environment

Inspection and handover records

Acceptance checks cover material identification, beam dimensions and straightness, end plates, bolt-hole positions, weld dimensions and appearance, and the specified finish. UT, MT or other non-destructive testing is arranged where required by the project inspection plan; method, extent and acceptance criteria are agreed before fabrication. ISO 17637 may be specified for visual testing and ISO 17635 for selection of weld NDT methods.

The agreed document package can include material certificates, approved fabrication drawings, dimensional and weld inspection records, finish inspection records and a packing list matched to piece marks. Supplied bolts, secondary framing and erection support are identified separately in the quotation.

From drawings to shipment

Project geometry and drawings → engineering and connection review → design or detailing where required → quotation and drawing approval → material preparation and fabrication → inspection and finish → piece marking, packing and shipment.

Roof beam packages for your project

FAQ

Does a 20 m span define the beam section

No. Loads, support conditions, bracing, steel grade, deflection requirements and roof geometry also affect the section. A 20 m or larger span is a design input rather than a standard beam specification.

Can every column spacing option use the same beam

No. Changing the longitudinal frame spacing changes the roof area carried by each frame. The 6, 9, 12 and 18 m options must each be reviewed against the selected roof and framing system.

Can the flange and web use different thicknesses

Yes, where the approved built-up beam design specifies them. List web, flange, end-plate and stiffener thicknesses separately in the BOM rather than using one plate thickness for the whole beam.

CTA

Send ZSJH your drawings or BOM, project location, span and grid, beam sections and plate thicknesses, steel grade, quantities, weld and inspection requirements, finish, delivery destination and target date. If drawings are incomplete, include the building geometry and required design services. ZSJH reviews the scope before confirming the quotation and fabrication details.