 | United States. War Department - 1902 - 968 pages
...by weight, and the sand and cement with 17 per cent of water by weight. After being thoroughly mixed and worked for five minutes, the cement or mortar...compressed by thirty blows of a soft brass or copper rammer three. fourths of an inch in diameter (or seven-tenths of an inch square with rounded corners) weighing... | |
 | Charles Carroll Brown - Cement - 1902 - 764 pages
...minutes the cement or mortar will be placed in the briquette mold in four equal layers and each layer rammed and compressed by thirty blows of a soft brass or copper rammer, three-quarters of an inch in diameter or seven tenths of an inch square, with rounded corners, weighing... | |
 | John Butler Johnson - Engineering - 1902 - 600 pages
...minutes, the cement or mortar will be placed in the briquette mold in four equal layers, and each layer rammed and compressed by thirty blows of a soft brass or copper rammer three-quarters of an inch in diameter (or seventenths of an inch square, with rounded corners), weighing... | |
 | Benjamin Franklin Thomas, David Alexander Watt - Rivers - 1903 - 554 pages
...weight, and the sand and cement with 1 7 per cent of water by weight. After being thoroughly mixed and worked for five minutes the cement or mortar is...compressed by thirty blows of a soft brass or copper rammer f of an inch in diameter (or J$ of an inch square with rounded corners), weighing i pound. It is to... | |
 | John Butler Johnson - Engineering - 1904 - 596 pages
...the cement or mortar is to be placed in the briquette mold in four equal layers, each of which is t& be rammed and compressed by thirty blows of a soft...of an inch square with rounded corners), weighing i pound. It is to be allowed to drop on the mixture from a height of about a half an inch. Upon the... | |
 | John Butler Johnson - Engineering - 1904 - 594 pages
...weight, and the sand and cement with 1 7 per cent of water by weight. After being thoroughly mixed and worked for five minutes the cement or mortar is...briquette mold in four equal layers, each of which is tc be rammed and compressed by thirty blows of a soft brass or copper rammer three-fourths of an inch... | |
 | L. J. Mensch - Concrete - 1904 - 234 pages
...minutes, the cement or mortar will be placed in the briquette mold in four equal layers, and each layer rammed and compressed by thirty blows of a soft brass or copper rammer threequarters of an. inch in diameter (or seven-tenths of an inch square, with rounded corners), weighing... | |
 | John Butler Johnson - Engineering - 1904 - 598 pages
...minutes, the cement or mortar will be placed in the briquette mold in four equal layers, and each layer rammed and compressed by thirty blows of a soft brass or .copper rammer three-quarters of an inch in diameter (or seventenths of an inch square, with rounded corners), weighing... | |
 | John Butler Johnson - Engineering - 1904 - 588 pages
...weight, and the sand and cement with 1 7 per cent of water by weight. After being thoroughly mixed and worked for five minutes the cement or mortar is to be place*/ in the briquette mold in four equal layers, each of which is tc be rammed and compressed by... | |
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... per cent of water by weight. After being thoroughly mixed and worked for five minutes, the cement or mortar... 
