Posi-Joist Span Table

POSI-JOIST Span Calculator

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Based on your size these are the Max Clear Span options:

The following clear span limits are based on domestic floor loads only, with deflection limited to 14mm, partitions accounted for at 0.35 kN per square meter. If you have a different set of criteria, or would like to talk about these in more detail, please make contact.

Joist Depth (mm)Joist Width (mm)Centres (mm)Max Span (mm)Order Online
225726004200
225724004900
225976004600
225974005200
2251226004900
2251224005500
2251476005100
2251474005700
253726004700
253724005300
253976005000
253974005600
2531226005200
2531224005900
2531476005400
2531474006100
304726005100
304724005700
304976005400
304974006100
3041226005600
3041224006400
3041476005800
3041474006600
373726005500
373724006200
373976005800
373974006600
3731226006100
3731224006900
3731476006300
3731474007200
421726005900
421724006700
421976006300
421974007100
4211226006600
4211224007500
4211476006800
4211474007700
Joist Depth (mm)Joist Width (mm)Centres (mm)Max Span (mm)Order Online

Ready To Find Out More, Contact Our Design Team For A Free Quote And Interactive 3D Design

Hampshire Engineered Timber Solutions are a MiTek Posi-Joist manufacturer and benefit from the very latest industry leading design and layout software to create project specific designs.

Detailed output drawings can be provided for approval and manufacture, but it is the 3D viewer tools that really separates Posi-Joist from the rest.

Designs are shared via a free cloud based 3D viewing platform, allowing for a fully interactive 3D model of the floor or roof to be viewed on any internet enabled device. No apps are required, you will be sent a link to your model and simply click it to view in your browser..