"Bricklaying,"

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O.B. Maginnis, 1900 - Bricklaying - 85 pages
 

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Page 21 - Cements other than Portland cement shall be considered to mean such cement as will, when tested neat, after one day set in air, be capable of sustaining without rupture a tensile strain of at least 60 pounds per square inch...
Page 21 - Cement Mortar — Cement mortar shall be made of cement and sand in the proportion of one part of cement and not more than three parts of sand and shall be used immediately after being mixed. The cement and sand are to be measured and thoroughly mixed before adding water. Cements must be very finely ground and free from lumps.
Page 21 - Lime mortar shall be made of one part of lime and not more than four parts of sand. All lime used for mortar shall be thoroughly burnt, of good quality, and properly slaked before it is mixed with the sand.
Page 80 - Whenever an excavation of either earth or rock for building or other purposes shall be intended to be, or shall be carried to, the depth of more than 10 feet below the curb, the person or persons causing such excavation to be made shall at all times, from the commencement until the completion thereof, if afforded the necessary license to enter upon the adjoining land and not otherwise, at his or their own expense, preserve any adjoining or contiguous...
Page 80 - If such excavation shall not be intended to be, or shall not be carried to, a depth of more than 10 feet below the curb...
Page 57 - Every pier built of brick, containing less than nine superficial feet at the base, supporting any beam, girder, arch or column on which a wall rests, or lintel spanning an opening over ten feet and supporting a wall, shall at intervals of not over thirty inches apart in height have built into it a bond stone not less than four inches thick, or a castiron plate of sufficient strength, and the full size of the piers.
Page 80 - ... adjoining or contiguous wall or walls, structure or structures from injury, and support the same by proper foundations, so that the said wall or walls, structure or structures, shall be and remain practically as safe as before such excavation was commenced, whether the said adjoining or contiguous wall or walls, structure or structures, are down more or less than ten feet below the curb.
Page 80 - ... and shall be permitted to enter upon the premises where such excavation is being made for that purpose, when necessary.
Page 69 - Hemlock 500 500 Chestnut 500 1,000 Concrete (Portland) cement, 1; sand, 2; stone, 4, 230 Concrete (Portland) cement, 1; sand, 2; stone, 5, 208 Concrete (Rosendale, or equal), cement, 1; sand, 2; stone, 4 125 Concrete (Rosendale, or equal), cement, 1; sand, 2; stone, 5 Ill Rubble stonework in Portland cement mortar... 140 Rubble stonework in Rosendale cement mortar, 111 Rubble stonework in lime and cement mortar..
Page 21 - Such cements, when tested neat, shall, after one day in air, develop a tensile strength of at least 300 pounds per square inch ; and after one day in air and six days in water shall develop a tensile strength of at least...

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