This post covers the design of a simple 2×2.4m outdoor shed, made from 45x45mm lumber and 9mm plywood. The frame consumes a minimum of 57.8m of lumber, though more is needed if additional members not in the drawings (girts etc.) are included, as was done here. The 45×45 lumber was ripped from 90×45 which saves on cost, though if you are using SG6 instead of SG8 graded wood, be aware that knots through the whole 45mm section can render lengths unusable. The frame is fastened with 14G x 75mm bungle batten screws.

Twelve sheets of 1200x2400x9mm (or similar thickness) plywood are required for the external cladding, including the doors and roofing, though these latter two may be omitted. Offcuts from the two side walls can be used as mats to protect the floor paint.

The roof is designed to use four lengths of 2400x690mm corrugated roofing, or to save cost, five lengths of 1800mmx690mm, with the fifth length divided into five pieces to extend the 1800mm lengths to the full length of the sloped roof (overlapped and with overhang to prevent water running down the walls or getting between the sheets).

Sunlite 2400 x 690mm Light Blue PVC Roofing – Bunnings New Zealand