Cyclopedia of Architecture, Carpentry, and Building: A General Reference Work ..., Τόμος 1

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American Technical Society, 1917
 

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Σελίδα 270 - The resulting quotient will indicate an amount to be added to the former assumed height of riser for a new trial height. The remainder will now be less than in the former division; and if necessary, the operation of reduction by division is repeated, until the height of the riser is obtained to the thirty-second part of an inch. These heights are then set off on the story rod as exactly as possible. The story rod is simply a dressed or planed pole, cut to a length exactly corresponding to the height...
Σελίδα 171 - ... steel, inserted between the two timbers, and the whole is held firmly together by bolts. The size of the plate should be in proportion to the size of the timbers, so as to make the most economical combination. If we have two pieces of timber out of which we wish to make a compound girder, it is almost always possible to get a stronger combination by placing them one on top of the other, than by placing them side by side. This is because the strength of a beam varies as the square of its depth,...
Σελίδα 112 - These bars should be used at every fifth or sixth joist, to form a series of continuous lines across the building from sill to sill. If the girder is sunk a little below the tops of the joists these may be gained into it in the same way as they are gained into the sill.
Σελίδα 1 - They desire to express their indebtedness particularly to the following eminent authorities whose well-known works should be in the library of everyone connected with building. Grateful acknowledgment is here made also for the invaluable cooperation of the foremost architects, engineers, and builders in making these volumes thoroughly representative of the very best and latest practice in the design and construction of buildings ; also for the valuable drawings and data, suggestions, criticisms,...
Σελίδα 141 - Fig. 191, and it will be noticed that they are not used in exactly the same way. The piece at the top A is so placed that its longer' dimension is at right angles to the plane of the roof, while the piece at the bottom B has its longer dimension vertical. In the case shown in Fig.
Σελίδα 102 - If the piece is made too narrow in proportion to its depth, however, it is likely to fail by " buckling," that is, it would bend as shown in Fig. 94. The width should be at least equal to one-sixth of the depth. There are at least three ways in which the joists may be supported by the girder. The best but most expensive method is to support the ends of the joists in patent hangers or stirrup irons which connect with the girder. This method is the same as was described for the sill, except that with...
Σελίδα 154 - Fig. 206 shows how this may be applied. At A is shown a plan of an ogee roof over a bay window with a hip rafter DE and common rafters. At B is shown an elevation of one of the common rafters cut to coincide with the curve of the roof surface. The shape of the curve may be varied to suit the fancy of the designer. At C is shown an elevation of the hip rafter DE, showing the curve to which it must be cut in order to fit into the roof. To determine this curve we draw on the roof plan at A any number...
Σελίδα 85 - ... although in very light framing a four-by-six might be used. A tenon is cut in the foot of the corner post to fit a mortise cut in the sill, and mortises cc, Fig. 63, are cut in the post at the proper level to receive the tenons cut in the girts. Holes must also be bored to receive the pins dd which fasten these members to the post. The braces are often only nailed in place, but it is much better to cut mortises in the posts for these also, as shown at A in Fig. 64. The plate is usually fastened...
Σελίδα 106 - Joists are the light pieces which make up the body of the floor frame and to which the flooring is nailed. They are almost always made of spruce, although other woods may be used, and may be found more economical in some localities. They are usually two inches thick, but the depth is varied to suit the conditions.
Σελίδα 138 - ... spiked to the lower rafters, so as to act like tie beams across the building and to counteract the outward thrust of the rafters. Sometimes these floor joists are dropped below the wall plate f, and are supported on a ledger-board notched into the wall studding i.

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