Houghton's Concrete Worker's Reference Books, Випуск 4N.W. Henley Publishing Company, 1911 |
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Сторінка 9
... pressure or strain ; for it is far better to err on the safe side than to underestimate the requisite strength demanded for the work . While the construction of small chimneys is well known to every mason , yet the simple forms shown in ...
... pressure or strain ; for it is far better to err on the safe side than to underestimate the requisite strength demanded for the work . While the construction of small chimneys is well known to every mason , yet the simple forms shown in ...
Сторінка 14
... pressure upon the chim- ney , the maximum velocity of one hundred miles per hour should be used ; as it is safe to say that it will not be exceeded . This is given as forty pounds per square foot against a vertical plane , with one ...
... pressure upon the chim- ney , the maximum velocity of one hundred miles per hour should be used ; as it is safe to say that it will not be exceeded . This is given as forty pounds per square foot against a vertical plane , with one ...
Сторінка 16
... pressure against same , while the concrete is in a " green " state prior to the final set or harden- ing . The centering should also carry guides for the vertical reinforcing rods to insure against displace- ment . CONSTRUCTING SMALL ...
... pressure against same , while the concrete is in a " green " state prior to the final set or harden- ing . The centering should also carry guides for the vertical reinforcing rods to insure against displace- ment . CONSTRUCTING SMALL ...
Сторінка 54
... pressure is usually estimated at a velocity of 100 miles per hour , which exerts a pres- sure against a vertical plane of forty pounds to the square foot ; this pressure is of course reduced when the roof is near to the horizontal ...
... pressure is usually estimated at a velocity of 100 miles per hour , which exerts a pres- sure against a vertical plane of forty pounds to the square foot ; this pressure is of course reduced when the roof is near to the horizontal ...
Сторінка 55
Albert Allison Houghton. wind - pressure of 23.7 pounds to each square foot ; 8 " rise per foot , or angle of 33 ° 14 ' , would give 29.1 pounds normal pressure ; 12 ′′ rise , or an angle of 45 ° , would give 36.1 pounds ; 16 " rise per ...
Albert Allison Houghton. wind - pressure of 23.7 pounds to each square foot ; 8 " rise per foot , or angle of 33 ° 14 ' , would give 29.1 pounds normal pressure ; 12 ′′ rise , or an angle of 45 ° , would give 36.1 pounds ; 16 " rise per ...
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