Show use abundance of nails when erecting buildings in the erection of farm buildings poor nailing of joints is often the cause of later damage to these buildings by windstorms wind storms skimping of the number of nails often means increased upkeep costs A poor job of nailing in the construction or repair of farm buildings and the use of too few or too small nails result in weaknesses at the joints many farm buildings are blown down or sag because not enough or too small nails were used in their construction and while small nails do not crack the lumber so much as larger ones they are not so effective in holding the building rigid good nailing practice consists mainly in using the proper kind size and number of nails for each particular part of a wooden structure in order to get the full strength of the common wire nail under a sideways side ways pull it must be driven at least two thirds of its length into the piece receiving the point if lightweight light weight wood is being nailed when it is not possible to get this much penetration more nails should be used because the strength increases directly with the number of nails for wall sheathing and roof boards of the ordinary kind two eight penny nails at each nailing point are usually enough in assembling rafters it is well to consider that a severe storm may lift the roof as a whole therefore at least three or four nails of the proper length should be used to fasten each rafter to the top of the side walls the proper number of nails in such places sometimes seem see m to be more than necessary but the they Y may mean the difference between a wrecked roof or one in place after a storm |