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INDUSTRY REFERENCE MATERIAL

Conversion Charts and Span tables

The following are a list of general timber conversions which are used throughout the timber industry.

Lineal Metres to Cubic Metres
 Lineal metres x normal width x normal depth = Cubic Metres
●  Eg: 300 lineal x 0.100 x 0.038 = 1.14m3
 
$ Per Lineal Metres to $ Per Cubic Metres
●  $Lineal metres / nominal width / nominal depth = Cubic Metres
●  Eg: $0.79 0/075 / 0.025 = $421.36 m3
 
Cubic Metres to Lineal Metres
●  $m3 / nominal width / nominal depth = $ Lineal Metres
●  Eg: 0.694 m3 / 0.075 / 0.025 = 370
 
$ Cubic Metres to $ Lineal Metres
●   $m3 x nominal width x nominal depth = $ Lineal Metres
● 75 x 25 = $420 m3 converts to $420 m3 x 0.075 x 1.025 = $0.79
 
Square Metres to Lineal Metres
●  Sq Metres / cover width x waste factor = Lineal Metres
●  140sq metres cover width / 0.080 / 2.5% = 1794 Linel Metres
 
$ per Square Metre to $ per Lineal Metre
●   =  1 / cover width =? $ Square Metres / ? = S Lineal Metre
●  Eg: 80 x 19 Flooring at $31.25 m2 converts to = 1 / 0.8 = 12.5
●  $31.25 m2 / 12.5 = 2.50 Per Lineal Metre
 
Lineal Metre to Square Metre
●    =  Lineal Metre x cover width = Square Metres
●   Eg: 878 lineal x 0.80 = 70.24 square metres ( the 0.0870 is the cover size for 100 x 25 flooring)
 
$ per a Lineal Metre to $ per a Square Metre
●  1 / cover width = ? X $ per a lineal metre = Square Metre
●   Eg: 80 x 19 Flooring at $2.50 lineal converts to 1 / 0.080 = 12.5 x $2.50 = $31.25
 
$ per Cubic Metre to $ per and Each
● = Length x nominal width x nominal depth = m3 x $m3 = $ Unit Price
● Eg: 1 Piece 2.4 x 125 x 50 at $420.00m3 Converts to 
● 2.4 x 0.125 x 0.015 x $420.00 = $6.30 Each
 
$ Each Price to Cubic Metre
●  = Each Price / nominal width / noiminal depth / length = $ per a m3
●  Each price / nomianl width / nominal length / = $ m3
●  Eg: $6.30 / 0.125 / 0.05 / 2.4 m = $420.00 m3
PERGOLA BEAMS SPAND Wind Classification 1 & N2
Roof Load Width (RLW)
1800mm 2400mm 3000mm
Size F5 F7 MP10 F5 F7 MP10 F5 F7 MP10
120 x 45mm 1700 2000 2200 1600* 1700 1700 NS 1700 1700*
140 x 45mm 2200 2600 2700 1900 2200 2200 1700* 1900 2000
190 x 45mm 3100 3500 3500 2700 3000 3000 2400 2800 2700
240 x 45mm 3900 4500 4300 3400 3800 3700 3000 3400 3300
Continuous Span
120 x 45mm 1900 2200 2300 1700 1900 1900 1500* 1700 1700
140 x 35mm 2300 2600 2700 1900 2200 2300 1800 1900 2000
190 x 45mm 3200 3500 3500 2800 3100 3100 2500 2800 2800
240 x 45mm 4500 4100 4400 3400 3900 3800 3100 3400 3300

Note: * denotes 600mm rafter spacing only. Member span is not suitable for rafter spacing greater than 600mm.

TREATED PINE SPAN TABLES
PERGOLA RAFTER SPANS FOR 600MM AND 900MM SPACING
Wind Classification n1 & N2
Single Span
Continuous Span
Rafter Spacing
Rafter Spacing
Rafter Spacing
Rafter Spacing
600mm
900mm
600mm
900mm
Size F5 F7 MP10 F5 F7 MP10 F5 F7 MP10 F5 F7 MP10
90 x 43mm 1800 1900 2200 1500 1800 1700 2200 2400 2800 2000 2200 2200
90 x 45mm 2100 2200 2700 1900 2100 2300 2700 2900 3300 2300 2500 2700
120 x 35mm 3000 3300 3800 2800 3000 3000 3500 4000 3800 2800 3100 3000
120 x 45mm 3600 3900 4300 3200 3400 3700 4100 4500 4700 3200 3600 3700
140 x 35mm 4000 4300 4500 3300 3700 3500 4200 4700 4500 3300 3700 3500
140 x 45mm 4500 4700 5100 3800 4100 4400 4800 5300 5500 3800 4200 4400
190 x 35mm 5600 5800 5900 4600 5100 4700 5700 6400 5900 4600 5100 4700
190 x 45mm 6000 6200 6800 5200 5600 5800 6500 7200 7200 5200 5900 5800
240 x 35mm 7000 7200 7200 5800 6400 5800 7200 7200 7200 5800 6500 5800
190 x 45mm 7200 7200 7200 6700 7000 7200 7200 7200 7200 6700 7200 7200

Note: Where rafters are equal to or exceed four times their breath, blocking should be used to reduce distortion