Timber sizes

I had to post these I'm using Open Office …

FLOOR JOISTS SUITABLE FOR DOMESTIC FLOOR LOADINGS

Size of joists Maximum clear span in metres for joist spacing of
in mm 400mm 450mm 600mm

97 x 50 1.98 1.87 1.54
122 x 50 2.6 2.5 2.19
147 x 50 3.13 3.01 2.69
170 x 50 3.61 3.47 3.08
195 x 50 4.13 3.97 3.5
220 x 50 4.64 4.47 3.91
147 x 75 3.56 3.43 3.13
170 x 75 4.15 3.96 3.61
195 x 75 4.68 4.52 4.13
220 x 75 5.11 4.97 4.64

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One thought on “Timber sizes

  1. I can't copy and paste from spreadsheet to word processor. I wonder who invented that feature.The trouble with amateurs is that they just don't know when to stop.

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