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All sidewalks which may be ordered by the Board of Trustees shall be cement and shall be constructed as follows:
(A) Said sidewalks shall be five feet (5') and four inches (4") in width, and the upper surface thereon when completed shall have a slope of one-fourth of an inch (1/4") to the foot toward the center of the street or avenue on which such sidewalk is laid.
(B) The top surface of said sidewalk nearest to the lot line, shall when completed, to six inches (6") above the established grade of the street, which is the top curb line.
(C) The inside or edge of said sidewalk nearest the lot line, when completed, shall be at a distance of one foot (1') from the lot line of the lot or lots in front of or alongside of which such sidewalk is constructed.
(D) A sub-foundation, the full width of the sidewalk, shall first be prepared by cutting down or filling up the natural surface of the ground to a point twelve inches (12") below what will be the top surface of the sidewalk when completed; such filling shall be of earth in sufficient quantity so that after being flooded and tamped the top of the sub-foundation as thus prepared shall be twelve inches (12") below the top surface of said walk when completed in case excavation shall be necessary to bring the top of such sub-foundation to the point above specified, then such excavation shall be so made that the top of such sub-foundation shall be twelve inches (12") below the top surface of said sidewalk when completed.
(E) Upon such sub-foundation shall next be laid and placed cinders of the kind and character above specified; such cinders shall be flooded and thoroughly tamped and sufficient cinders shall be used so that after being so flooded and tamped the cinder bed above such sub-foundation shall be eight (8) inches in thickness, and the full width of the walk.
(F) Upon the cinder bed thus formed shall be placed a layer of concrete three inches (3") in thickness, consisting of four parts of limestone broken to pass through a ring one inch in diameter, two, parts of clean torpedo sand and one part of Portland Cement; the sand and cement shall be mixed dry on a clean bed, then the broken stone shall be wet and shall be added to the cement and sand so mixed dry as aforesaid; the whole mass shall then be thoroughly mixed, then enough water shall be added to thoroughly wet the whole mixture, but in such quantities that after the whole shall be thoroughly mixed the water will not show on the surface of the mixture until it is rammed. After the water has been added and the mass thoroughly mixed it shall at once be laid in the work and rammed until free water flushes to the surface when the wearing surface shall be laid upon it at once before the base can set.
(G) Such wearing surface or finishing layer of said concrete walk shall be one inch (1") in thickness and shall consist of one part of clean torpedo sand and one part of Portland cement, which shall be thoroughly mixed when wet and immediately laid and troweled to a smooth finish before it has begun to set. After the walk has been completed the same shall be kept covered for a period of three (3) days to prevent injury.
(H) All cement used in construction of this walk shall be Portland cement and shall stand a tensile strength per square inch of neat cement on seven days' test of five hundred and fifty (550) pounds. All material that enters into the construction of such sidewalk shall be first quality.
All stone used in the construction of said sidewalk shall be of the best quality of blue limestone, uniform in color and free from dirt.
All sand used shall be clean washed torpedo sand of first quality.
All cinders shall be free from ashes. No cement, mortar or concrete shall be used after it has begun to set.