Popular Hand Book for Cement and Concrete Users: A Comprehensive and Popular Treatise on the Principles Involved and Methods Employed in the Design and Construction of Modern Concrete Work ... |
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Сторінка 40
Material which is foreign to the stone , such as vegetable mould , scale , or loam ,
which cling to the surface will reduce the strength of the concrete . Numerous
tests conducted during the last several years by competent engineers have
shown ...
Material which is foreign to the stone , such as vegetable mould , scale , or loam ,
which cling to the surface will reduce the strength of the concrete . Numerous
tests conducted during the last several years by competent engineers have
shown ...
Сторінка 83
Early manufacturers of concrete blocks were unfortunate in trying to mould the
surfaces in imitation of quarry - faced stone , and the effect of their efforts was to
produce a structure without beauty or variety . “ A rock - faced stone is the result
of ...
Early manufacturers of concrete blocks were unfortunate in trying to mould the
surfaces in imitation of quarry - faced stone , and the effect of their efforts was to
produce a structure without beauty or variety . “ A rock - faced stone is the result
of ...
Сторінка 92
Plumbing and levelling “ screeds ” to act as bearings for the floating rule and
running mould . b . Filling in the spaces between the screeds . C . Scouring . d .
Keying the surface for the finishing coat . Screeds are the guides on the margins
of ...
Plumbing and levelling “ screeds ” to act as bearings for the floating rule and
running mould . b . Filling in the spaces between the screeds . C . Scouring . d .
Keying the surface for the finishing coat . Screeds are the guides on the margins
of ...
Сторінка 114
Or else a reverse mould made of some artistic bit of carving for a panel or over a
door or window , or a frieze , etc . , may be nailed against the forms , and the
resulting impress will be thoroughly effective , although a much higher artistic
value ...
Or else a reverse mould made of some artistic bit of carving for a panel or over a
door or window , or a frieze , etc . , may be nailed against the forms , and the
resulting impress will be thoroughly effective , although a much higher artistic
value ...
Сторінка 119
Since the space for concrete in the mould is very small , the blockbuilder is
limited to the use of gravel and stone not exceeding 1 / 2 to 3 / 4 inch in size . A1 :
5 mixture containing such gravel or screenings will produce a block as strong
and as ...
Since the space for concrete in the mould is very small , the blockbuilder is
limited to the use of gravel and stone not exceeding 1 / 2 to 3 / 4 inch in size . A1 :
5 mixture containing such gravel or screenings will produce a block as strong
and as ...
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amount applied arch bars beam blocks bottom brick bridge building built carrying cause cent centre chapter coat color columns complete compression compressive stress consists construction contains cost covered depth desired diameter effect employed engineer equal face feet finish floor foot forms foundation girders give given gravel ground grout illustrated inches increased length less lime load machine manufacture material metal method mixing mixture mortar mould necessary obtained pile pipe placed plaster Portland cement possible posts pounds practical pressure prevent Price produce proper proportions reinforced concrete removed resistance rods Rule sand side slab space span square steel stone strength stress structure surface TABLE tests thick unit usually various vertical wall waterproofing weight wire
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Сторінка 25 - Pats of neat cement about three inches in diameter, one-half inch thick at the center, and tapering to a thin edge, shall be kept in moist air for a period of twenty-four hours.