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tamped with a hand wood tamper to the proper gutter grade. The rolling will then commence near the curb at a very slow pace and continue back and forth until the center of the pavement is reached then pass to the opposite curb and repeat in the same manner to the center of the street. After this first passage of the roller the pace may be quickened and the rolling continued until each brick isfirmly embedded in the sand cushion.
The roller shall then be started at the end of the block and the pavement rolled transversely at an angle of forty five degrees to the curb.
The transverse rolling shall then be repeated in the opposite direction. Before this transverse rolling takes place all broken or injured brick must be taken up and replaced with perfect ones.
Rolling shall be commenced for a period of at least ten days after placing the concrete base.
EXPANSION CUSHION.
An expansion cushion shall be provided for one inch in thickness next to the curb. This must be filled two thirds of its depth with pitch, the top one third having filled with sand.
FILLER.
The filler shall be composed of one part each of clean sand and Portland Cement. The sand should be dry. The mixture, not exceeding one-third bushel of the sand, together with a like amount of cement, shall be placed in the box and mixed dry, until the mass assumes an even and unbroken shade. Then water shall be added, it forming a liquid mixture of the consistency of thin cream.
From the time the water is applied until the last drop is removed and floated into the joints of the brick pavement, the same must be kept in constant motion.
The mixture shall be removed from the box to the street surface with a scoop shovel, all the while being stirred in the box as the same is being thus emptied. The box for this purpose shall be 3 1/2 to 4 feet long, 27 to 30 inches wide and 14 inches deep
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resting on legs of different lengths, so that the mixture will readily flow to the lower corner of the box, which should be from 8 to 10 inches above the pavement. This mixture, from the moment it touches the brick, shall be thoroughly swept into the joints. Three such boxes shall be provided.
The work of filling should thus be carried forward in line until an advance of fifteen to twenty yards has been made, when the same force and appliances shall be turned back and cover the same space in a like manner.
To avoid the possibility of the grout thickening at any point, there should be a man with a sprinkling can, the head of which is perforated with small holes and he should gently sprinklethe surface ahead of the sweepers.
With one-half to three-quarters of an hour after this last coat is applied and the grout between the joints has fully subsided and the initial set is taking place the whole surface, must be slightly sprinkled and all surplus mixture left on the topsof the bricks swept into the joints, bringing them up flush and full.
After the joints are thus filled flush with the top of the bricks and sufficient time for evaporation has taken place, so that the coating of sand will not absorb any moisture from the cement mixture, one-half inch of sand shall be spread over the whole surface, and in case the work is subjected to a hot summer sun, an occasional sprinkling, sufficient to dampen the sand, shall be followed for two or three days.
The pavement shall after grouting remain absolutely free fro from disturbance or traffic of any kind for a period of ten days.
CEMENT.
No cement shall be used on this work unless approved by the City Engineer. For this purpose he shall be entitled to take samples from each package. The decision of the City Engineer shall be final in all cases and no cement condemed by him shall be used on the work for any purpose whatever. All cements will be required to pass the tests noted in specifications for cement for Fort Worth.
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WM. Bryce CONTRACTOR AND BRICK MANUFACTURER
Gravel roofing and supplies
Fort Worth, Texas. Aug 9, 1907.
Hon. Board Commissioners, City of Fort Worth.
Gentlemen:
I propose to build, complete, a Fireproof Vault on Main Floor of City Hall (in the space now occupied by stairway) supporting same on Steel Beams, and floor and top to be of concrete, and all plastered on inside, with cement floor, also put in joists and floor on second story where stair is to be taken out. Will do this work and furnish all material for the sum of One Thousand Eighty-five Dollars ($1085.00). This price includes $100.00 for Vault Door.
Yours Truly, [signature of Wm Bryce]
