This section is from the book "Building Construction And Superintendence", by F. E. Kidder. Also available from Amazon: Building Construction And Superintendence.
(From the Architects' and Builders' Pocket Book.)
Tons per square foot. | Eastern | Western |
Red brick in lime mortar............................ | 7 | 5 |
" hydraulic lime mortar....................... | 6 | |
" natural cement mortar, 1 to 3...................... | 10 | 8 |
Arch or pressed brick in lime mortar...................... | 8 | 6 |
" " " natural cement...................... | 12 | 9 |
" " " Portland cement.............................. | 15 | 12½ |
Piers exceeding in height six times their least dimensions should be increased 4 inches in size for each additional 6 feet.
STONEWORK. | |||
(Tons per square foot.) | |||
Rubble walls, irregular stones................................ | 3 | ||
" coursed soft stone.............................. | 2½ | ||
" " hard stone....................... | 5 | to | 16 |
Dimension stone, squared in cement: | |||
10 | to | 20 | |
Granite....................... | 20 | to | 40 |
Dressed stone, with 3/8-inch dressed joints in cement: | |||
Granite........................... | 60 | ||
Marble or limestone, best................. | 40 | ||
Sandstone.............................. | 30 | ||
Height of columns not to exceed eight times least diameter. |
Portland cement, 1 to 8..................... | 8 | to | 15 |
Rosendale cement, 1 to 6...................... | 5 | to | 10 |
Hydraulic lime, best, 1 to 6............................. | 5 |
HOLLOW TILE. | ||
(Safe load* per square inch of effective bearing parts.) | ||
80 | lbs. | |
" ordinary clay tiles.................. | 60 | II |
Porous terra cotta tiles........................ | 40 | II |
MORTARS. | |||
(In ½-inch joints, 3 months old, tons per square foot.) | |||
Portland cement, 1 to 4 | 40 | ||
Rosendale cement, 1 to 3 | 13 | ||
Lime mortar, best | 8 | to | 10 |
Best Portland cement, 1 to 2, in ¼-inch joints for bedding iron plates | 70 |
 
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