On older homes planks were often spaced for wood or slate roofs with wider exposures than the standard 5 inch tab on asphalt shingles.
Wood plank roof decking.
Similar to sheathing the boards act to provide lateral support to the structure and carry the live and dead loads from above to the floor or roof structure below.
No expensive or complex substructure of steel beams or other crisscrossing bearers is required.
Typically plank decking material is either 1 x6 or 1 x8 lumber.
Plank sheathing usually 1 6 or 1 8 was used as a roof deck before plywood.
In the first half of the 20th century roofs in missouri were built with wood shingles over planks spaced about 1 apart.
If pieces are for controlled random layup odd or even lengths are permitted and the minimum lengths based on board feet percentages shall be as follows.
Wood decking is created using structural boards or planks and attaching them to joists beams rafters or trusses to form a floor or roof surface.
The plank problem typically sheathing problems are isolated to small areas but old plank sheathing presents more of a challenge.
Two inch decking not less than 40 to be 14 ft.
And longer not more than 10 to be less than 10 ft.
Wood plank roof decks with pedestal supported wood bearers you can construct a traditional wood plank deck on rooftops plazas terraces and garage roofs with much less work and substantially lower cost with the eterno pedestal system for wood decks.
Plank decking in older homes plank decking may have been used for the roof decking substrate.