Erection and Inspection of Iron and Steel Constructions: Written for the Use of Architects, Engineers and Builders and for Civil Service Candidates for the Position of Inspector of Iron and Steel

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Chief Publishing Company, 1913 - Building, Iron and steel - 225 pages
 

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Page 162 - If the floor beams are of iron or steel, the contractors for the iron or steel work of buildings in course of construction or the owners of such buildings shall thoroughly plank over the entire tier of iron or steel beams on which the structural iron or steel work is being erected, except such spaces as may be reasonably required for the proper construction of such iron or steel work, and for the raising...
Page 161 - ... is being erected. If the plans and specifications of such buildings do not require filling in between the beams of floors with brick or fire-proof material, all contractors for carpenter work, in the course of construction, shall lay the under flooring thereof on each story as the building progresses, to not less than within two stories below the one to which such building has been erected.
Page 161 - Labor that the scaffolding or the slings, hangers, blocks, pulleys, stays, braces, ladders, irons or ropes of any swinging or stationary scaffolding used in the construction, alteration, repairing, painting, cleaning or pointing of buildings within the limits of a city are unsafe...
Page 161 - ... or where they may be in use. All swinging and stationary scaffolding shall be so constructed as to bear four times the maximum weight required to be dependent therefrom or placed thereon, when in use, and not more than four men shall be allowed on any swinging scaffolding at one time.
Page 132 - Where metal is incorporated in or forms part of a foundation it shall be thoroughly protected from rust by paint, asphaltum, concrete, or by such materials and in such manner as may be approved by the commissioner. When footings of iron or steel for columns are placed below the water level, they shall be similarly coated, or inclosed in concrete, for preservation against rust.
Page 131 - Wrought Iron. All wrought iron shall be uniform in character, fibrous, tough and ductile. It shall have an ultimate tensile resistance of not less than 48,000- pounds per square inch, an elastic limit of not less than 24,000 pounds per square inch, and an elongation of 20 per cent.
Page 132 - ... inches in thickness if under piers, columns or posts. The footing or base course, whether formed of concrete or stone, shall be at least twelve inches wider than the bottom width of walls, and at least twelve inches wider on all sides than the bottom width of said piers, columns or posts.
Page 46 - Up to 75 inches wide, 2$ per cent above or 2$ per cent below the theoretical weight. 75 inches wide up to 100 inches wide, 5 per cent above or 3 per cent below the theoretical weight. When 100 inches wide and over, 10 per cent above or 3 per cent below the theoretical weight.
Page 130 - Before the erection, construction or alteration of any building or part of any building, structure, or part of any structure, or wall, or any platform, staging or flooring to be used for standing or seating purposes, and before the construction or alteration of...
Page 149 - The safe carrying capacity of the various materials of construction (except in the case of columns) shall be determined by the following working stresses in pounds per square inch of sectional area : Compression (Direct).

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