Most lay outs are on 16 so the field is pre selected.
Floor joist calculator nz.
Next use the buttons in the table to select the maximum length in feet or metres in brackets that your floor joists must span.
Subject to design considerations.
Select the on center spacing for the joists.
If you have any questions about how to use.
They were generally spaced at 450 mm centres across the bearers and supported at their ends on the foundation wall plate or bearer fixed to the top of the concrete wall.
The minimum mass coating of galvanising is 275g m2.
The screw count is a bit high at times but this will allow for losing some.
Span calculator for wood joists and rafters also available for the android os.
The lowest is a plain ceiling joist with no storage 10 pounds per square foot.
This free tool gives construction industry professionals the ability to design wall floor and roof members using the lumberworx product range.
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.
Floor joist span calculator.
Species southern pine douglas fir larch hem fir spruce pine fir redwood western cedars ponderosa pine red pine.
This is how far apart they will be.
The standard steel used is grade 250 and has a minimum yield stress of 250mpa and a minimum tensile stress of 280mpa.
Alternatively you can use the lumberworx design tool.
There are six choices.
The highest is a fully loaded floor 70 pounds per square foot.
Speedfloor cold formed joists are manufactured from high strength pre galvanised steel coil conforming to as 1397.
The hyjoist range consists of nz made engineered i joists that are a cost effective solution for floor joists rafters and purlins in both residential and commercial construction.
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.
Span tables lumberworx has created the span tables below to assist in the specification of the lumberworx members.
Also available for the android os.