If you have any questions about how to use.
Floor joist calculator nz.
Species southern pine douglas fir larch hem fir spruce pine fir redwood western cedars ponderosa pine red pine.
Next use the buttons in the table to select the maximum length in feet or metres in brackets that your floor joists must span.
The screw count is a bit high at times but this will allow for losing some.
The minimum mass coating of galvanising is 275g m2.
This simple sub floor materials calculator will provide you with the lineal feet of floor joist needed the number of sheaths to cover the floor and how much glue and how many screws it takes to attach the sheathing to the joist.
Alternatively you can use the lumberworx design tool.
Span tables lumberworx has created the span tables below to assist in the specification of the lumberworx members.
Select the on center spacing for the joists.
The standard steel used is grade 250 and has a minimum yield stress of 250mpa and a minimum tensile stress of 280mpa.
Floor joists were typically 150 x 50 mm or 200 x 50 mm but the size could range between 100 x 50 mm and 250 x 50 mm according to span.
Speedfloor cold formed joists are manufactured from high strength pre galvanised steel coil conforming to as 1397.
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.
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.
The lowest is a plain ceiling joist with no storage 10 pounds per square foot.
The highest is a fully loaded floor 70 pounds per square foot.
Consisting of structural lvl flanges with a structural plywood web hyjoist is lightweight and easy to install.
Span calculator for wood joists and rafters also available for the android os.
Floor joist span calculator.
Subject to design considerations.
Most lay outs are on 16 so the field is pre selected.
This is how far apart they will be.
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.
