 | John Grant - 1875 - 206 páginas
...f. / built in the water in the manner described by Mr. Hawkshaw, the cement of the country was used in the proportion of 1 part of cement, 2 parts of sand, and 3 parts of broken stone. At Leghorn a noble breakwater 1040 metres long, and built in a depth of 30... | |
 | Boston (Mass.). Transit Commission - 1896 - 218 páginas
...cause some annoyance. A system of under-drains was laid to keep this water below the concrete masonry. Concrete Masonry. — Concrete has been mixed in the...part of cement, 2¿ parts of sand, and 4 parts of The cement used has been mainly the Dyckerhoft* gravel. Portland. Progress. Miscellaneous. — Numerous... | |
 | Boston (Mass.). Transit Commission - 1896 - 202 páginas
...cause some annoyance. A system of under-drains was laid to keep this water below the concrete masonry. Concrete Masonry. — Concrete has been mixed in the proportion of 1 part of cement, 2J parts of sand, and 4 parts of gravel. The cement used has been mainly the Dyckerhoff Portland. Miscellaneous.... | |
 | Canadian Society of Civil Engineers - 1900 - 490 páginas
...part of cement. The same contractor bid $4.35 per cubic yard for concrete masonry of natural cement mixed in the proportion of 1 part of cement. 2 parts of sand and 5 parts of broken stone. The price for concrete would, undoubtedly, be considerably lower if the whole... | |
 | 1903 - 616 páginas
...sand, or coal ashes, well tamped, or rolled with a heavy roller. The concrete should then be prepared in the proportion of 1 part of cement, 2 parts of sand, and 3 parts of gravel, mixed dry; then a sufficient quantity of water is added to make a stiff mortar.... | |
 | International Correspondence Schools - 1903 - 608 páginas
...sand, or coal ashes, well tamped, or rolled with a heavy roller. The concrete should then be prepared in the proportion of 1 part of cement, 2 parts of sand, and 3 parts of gravel, mixed dry; then a sufficient quantity of water is added to make a stiff mortar.... | |
 | John Butler Johnson - 1904 - 594 páginas
...deep and 24 inches in diameter. The space around the poles shall be filled with concrete, composed of 1 part of cement, 2 parts of sand, and 4 parts of crushed rock. In setting poles, the top of the pole shall be given a rake of 8 inches from the vertical.... | |
 | John William McClymonds, David Rhys Jones - 1907 - 352 páginas
...100 cu. yd. of concrete ? 2. If the crushed stone (Prob. 1), sand, and cement are used in the ratio of 1 part of cement, 2 parts of sand, and 4 parts of crushed stone, how much of each will be required to build a concrete wall 6 ft. high, 18 in. thick,... | |
 | Isthmian Canal Commission (U.S.) - 1910 - 624 páginas
...1 part of cement, 3 parts of sand, and 6 parts of broken stone. A richer facing mixture, consisting of 1 part of cement, 2 parts of sand, and 4 parts of stone, is used around the main culverts. Finished horizontal surfaces consist of a mortar of 1 part... | |
| |
A concrete shall be made of 1 part of cement, 2 parts of sand and 4 parts of broken stone or gravel. 
