Calculate What Sizes of Timber or Metal Web Joists You Need For Support
Life is busy. There never seems to be enough hours in the day. If you’re a builder or an architect who’s burning more midnight oil than you’d like to, at Ochil Timber we’re here to help.
Calculating the size of timbers or metal web joists you need to support floors, ceilings and roofs isn’t a job to be taken lightly, but it’s a job you often find yourself doing. When you make your calculations, you need to know that you’ve allowed for sufficient support, but you don’t want to blow the budget by over-estimating at the same time.
This is why we’ve developed our own metal web Joist Span Tables for Domestic Floor Loading. It’s a fast, reliable and easy to use ready-reckoner to help you estimate and order your joists with confidence.
Based on a pre engineered metal web joist system by ITW Construction Products known as the SpaceJoist, the table shows the spans they can reach without any internal support. The SpaceJoist Span Tables give you the calculation for 47 x 72mm, 47 x 97mm and 47 x 122mm timber. They include Web type SJ9, 10 and 12 as well as TW14 and 19 alongside depths ranging from 219mm to 425mm, in addition to flat and pitched roof spans.
In other words, this SpaceJoist Span Table makes it easy for you to know exactly what size and depth of SpaceJoist you need to budget for, and the amount you need to order. Having said that, at Ochil Timber we’re always on the end of a phone or an email if you need more information or specific help. So don’t hesitate to contact us. We’d be delighted to hear from you.
If you have confidently worked out what you need using the table below you can send us your plans and request a free quote.
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SpaceJoist Timber Joist Span Table
The following calculations are for domestic floor loading (based on TR26 timber).
SpaceRafter Timber Joist Span Table
