Usually 400 450 or 600mm.
Floor joist span calculator uk.
Most lay outs are on 16 so the field is pre selected.
Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.
Domestic floor joist calculator.
Surveyors and structural engineers use data from tables below to help calculate the size of timbers necessary to give adequate support to timber floors.
Our floor joist span tables are based on loadings given in the newer amended version of bs 6399 1.
Species southern pine douglas fir larch hem fir spruce pine fir redwood western cedars ponderosa pine red pine.
To use the joist span calculator below first select the species of lumber you will use for your construction project from the drop down list.
Designing with wood beam span tables.
Also available for the android os.
Next use the buttons in the table to select the maximum length in feet or metres in brackets that your floor joists must span.
These span tables are the equivalent of other industry standard span tables and are calculated to the same standards.
Simply enter the required span to see a range of results that will work.
Select the on center spacing for the joists.
This table uses commonly available uk regularised timber depths.
1 enter joist details 1 1 span and joist spacing.
Span calculator for wood joists and rafters also available for the android os.
These spans were calculated using our floor joist calculation engine.
This is how far apart they will be.
The full version allows any size.
You will be given a range of depths and centres that are available and also an indicative deflection result.
This demo version is fixed at 1m clear span.
There are six choices.
Span tables for domestic floor joists to bs 5268 7 1 note.
This span table is to the format and methodology given in bs 5268 7 1.
The lowest is a plain ceiling joist with no storage 10 pounds per square foot.
You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.
Calculations to bs 5268 2 2002.
Use the joist span and spacing calculator below to plug in your desired type of wood the size of your joists and the required spacing between each joist.
The highest is a fully loaded floor 70 pounds per square foot.
This means that some values are slightly more conservative than span tables from other sources if those do not include the amended guidance.
Suitable for uk building regulation approval.
This is the distance between joist centres.
