Scientific Calculator

Learn Trigonometry or Calculate your Roof Truss pitch and dimensions

To find height : 2000 x 20ºtan = 728

To find half span : 728÷20ºtan = 2000

To find top chord : 2000÷20ºcos = 2128

To find pitch : 728÷2000= inv tan= 20º degrees

To find Plumb Cut of TC : 90÷20º = 95.77mm

 

Roof Pitch of example 20º degrees with

Top Chord (TC) of truss 90x35 pine

To find the overall height of a truss, first work out the height to the underside of the top chord. Then work out the plumb cut, add them together and that is your overall truss height.

• All dimensions are in millimetres
• No responsibility taken for mistakes made from incorrect calculations.
• Use the buttons on the calculator and formulas to work out truss dimensions.