Table of Contents
Altogether you will need
2×4 (100mm x 50mm) lumberAny of the framing wood.
You will need 52ft (16m) allowing for a little bit of waste.
Buy in lengths as long as possible and when cutting, cut the longest lengths first to eliminate waste.
1×4 (100mm x 25mm) lumber
You will need 52ft (16m) allowing for a little bit of waste.
Buy in lengths as long as possible and when cutting, cut the longest lengths first to eliminate waste.
You will also need
100 woodTimber, lumber. The hard fibrous lignified substance under the bark of trees screws 2-1/2″ (65mm) long suitable for exterior use.
100 wood screws 1-1/2″ (38mm) long suitable for exterior use.
Glue suitable for exterior use.
About the measurements and wood sizes
Lumber sizes are often misleading. The “nominal” cross-section dimensionsAny of the three linear measurements, length, breadth and depth. of a piece of lumber, such as 2×4 (100mm x 50mm) or 1X4 (100mm x 25mm) , are larger than the actual, or dressedSurfaced; planed; smooth; even surface; gauged., dimensions. The reason is that dressed lumber has been surfacedSee Dressed. or planed smooth. The nominal measurement is made before the lumber is surfaced.
Hence…
2×4 lumber (nominal sizeThe rough-sawn size of a piece of lumber. Before the lumber is surfaced, planed or dressed. The nominal size is usually greater than the actual dimension. e.g. 100x50 (2 x 4) actually equals 90x45 (1 1/2" x 3 1/2").) is actually 1-1/2″ x 3-1/2″ (actual sizeThe finished (dressed) size as opposed to the nominal size of a piece of wood.), likewise 1×4 lumber (nominal size) is actually 3/4″ x 3-1/2″ (actual size).
And the metricMillimeter measurements. equivalent…
100mm x 50mm lumber (nominal size) is actually 90mm x 45mm (actual size), likewise 100mm x 25mm lumber (nominal size) is actually 90mm x 19mm (actual size).
This project is written in both standard (inches) and metric (mmAbbreviation for millimeter which is a metric unit of length equal to one thousandth of a meter. 25.4 mm equals one inch.).
The standard measurements are given first followed by the metric measurements in brackets ( ) – for example: 2×4 (100mm x 50mm).
Note: The standard (inch) measurements given are not an exact match to their equivalent metric (mm) counterparts.
The Standard measurements given are suitable for North America. The metric measurements given are suitable for Australasia. Lumber from both regions have different actual sizes and the measurements given reflect that. Use one or the other and you will be just fine.
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