File:Architect and engineer (1920) (14803028493).jpg

Identifier: architectenginee6220sanf (find matches)
Title: Architect and engineer
Year: 1905 (1900s)
Authors:
Subjects: Architecture Architecture Architecture Building
Publisher: San Francisco : Architect and Engineer, Inc
Contributing Library: San Francisco Public Library
Digitizing Sponsor: San Francisco Public Library

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give service indefinitely without needof any maintenance such as is necessaryto temporary construction. Details of form construction forsimple concrete steps such as might beused at the side or rear entrance of theaverage home are shown in an accom-panying drawing. Steps of this kind rest-ing on well compacted earth require noreinforcing. Forms consist of planks held firmlyin place by means of 1 by 4-inch crosspieces against the side walls which arebuilt first. To the planks are nailed short1 by 4s the length of which is such thatthey come within two inches of thetreads. An added advantage in riser con-struction is given by sloping these pieces back, thus making an attractive lookingstep which provides a safety factor not present in most types. Cross planks,usually of one-inch material and eight inches high, are nailed to these to makethe riser forms. ./x^ l/i.4 Supports■for riser form Concrete steps add to the attractiveness of the entrance as well as to the safety and permanence.
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Simple design which can be adapted to any number of concrete steps For steps of this kind it is best to use concrete mixed in the proportion ofone sack of Portland cement to 2 cubic feet of sand to 4 cubic feet of pebbles or 9g THE ARCHITECT AND ENGINEER • crushed stone. Forms may be removed as soon as the concrete has acquiredsufficient strength to be self-sustaining. The steps may be given a finished sur-face by using a steel trowel after any small depressions which might be foundhave been filled with a cement grout. The concrete should be kept moist by frequent sprinklings for a week or 10days after removal of forms. A covering of earth or straw, kept wet will ac-complish the same purpose. At the end of this time they may be safely put intouse.—Concrete Builder. The Tax on Sales Proposition THE French Government has decided to place a tax of one per cent onevery business transaction. The fact that this is practically the taxon sales measure that lately was urged upon our own Co

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