The Technical World Magazine, Volume 7Technical World Company, 1907 |
From inside the book
Results 6-10 of 94
Page 57
... pounds . At three cents per pound this is worth $ 14.70 . On the other hand , a cubic foot of concrete is worth perhaps 20 cents or , let us say , 1-75th of the cost of steel . But if the steel is 320 times as strong as the concrete we ...
... pounds . At three cents per pound this is worth $ 14.70 . On the other hand , a cubic foot of concrete is worth perhaps 20 cents or , let us say , 1-75th of the cost of steel . But if the steel is 320 times as strong as the concrete we ...
Page 58
... pounds per square foot . The main girders have a total depth - to the top of the slab of about three feet , and a width of about two feet . The smaller beams have a width of twelve inches , a total depth of eighteen inches and are ...
... pounds per square foot . The main girders have a total depth - to the top of the slab of about three feet , and a width of about two feet . The smaller beams have a width of twelve inches , a total depth of eighteen inches and are ...
Page 59
... pounds per square inch to cause failure . Al- though the construction of trussed forms in reinforced concrete is not com- mon , the reinforcement of vertical col- umns in such a manner that they may be safely subjected to greater loads ...
... pounds per square inch to cause failure . Al- though the construction of trussed forms in reinforced concrete is not com- mon , the reinforcement of vertical col- umns in such a manner that they may be safely subjected to greater loads ...
Page 63
... frames four and one - fourth inches square , in which the combs are built . Each of these will con- tain a pound of honey . Rows of four each. ( 53 ) BEE - HIVES IN THE SHADE . The trees were planted to protect the apiary from the ...
... frames four and one - fourth inches square , in which the combs are built . Each of these will con- tain a pound of honey . Rows of four each. ( 53 ) BEE - HIVES IN THE SHADE . The trees were planted to protect the apiary from the ...
Page 64
... pound of wax for comb has been found to equal that which would be required in producing thirty pounds of honey , so the supplying of this foundation to the bees . saves them an immense amount of labor . Pieces of this prepared beeswax ...
... pound of wax for comb has been found to equal that which would be required in producing thirty pounds of honey , so the supplying of this foundation to the bees . saves them an immense amount of labor . Pieces of this prepared beeswax ...
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