Engineering contracts and specifications . he full standard sizes due to their thickness of the nut shall not be less than the diameter ofthe bolt, and the size of its square not less than twice the diam-eter of the bolt. Washers and separators shall be of cast iron. They mustbe smooth, well shaped, free from air holes, cracks, cinders orother imperfections. Timber and Framing.—All framing timber shall be ofwhite or burr oak, or of white Arkansas or long leaf yellow pine,as shown by the plans and bills of materials. All the timbermust be cut from living trees and be free from wan
Engineering contracts and specifications . he full standard sizes due to their thickness of the nut shall not be less than the diameter ofthe bolt, and the size of its square not less than twice the diam-eter of the bolt. Washers and separators shall be of cast iron. They mustbe smooth, well shaped, free from air holes, cracks, cinders orother imperfections. Timber and Framing.—All framing timber shall be ofwhite or burr oak, or of white Arkansas or long leaf yellow pine,as shown by the plans and bills of materials. All the timbermust be cut from living trees and be free from wanes, black,loose or unsound knots, worm holes, or any kind of decay, aswell as from large knots or wind shakes, which impair thestrength of the timber, and must be sawed true and of full so indicated on the plans, the timber shall be surfaced. Sap will be allowed in pine timber as follows: Allstringers must show not more than one and one-half inches of SPECIFICATIONS FOE BUILDING LEVEES. 357 li iN<^ ii. ^ -mi »|*| ^ He:/\rt. sap on two corners of one of the eight-Inch faces. Posts, caps,sills and other large timbers must show not more than one andone-half inches of sap on any one of the four corners. Guardrails must not show more than one inch of sap on one corneronly. Sway braces and floor plank must show heart on bothfaces, and in any cross section be not less than three-fourthsheart. All framing must be done to a close fit and in a thoroughand workmanlike manner. No shins or blocking of any kindwill be allowed in making joints. Ties and guard rails must bescribed and dapped in place. Tops and ends of stringers and the bearing surfaces of tiesshall be thoroughly painted with a thick coat of pure white leadground in and mixed with pure linseed oil. This paint shallalso be used on both surfaces of the bearing between stringersand caps, caps and posts, posts and sills, sills and piles, or anyother joints which may be indicated on the drawings. Cleaning Up.—After
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Keywords: ., bo, bookcentury1900, bookdecade1900, bookpublishernp, bookyear1902
