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BARNET AND SOUTH MIMS, NEW ROAD.
State of the Surface.
Going from Mims to Barnet.
Distance. Draught. Draught. || Draught. Draught. Draught. Draught.
Draught. Draught. Draught. Draught. | Draught. Draught.
Draught Draught. Draught.
1 5 0 15 1 32 30
30 8 28 30 50 65 2 1 17 13 35 28
30 12 30 30 42 65 3 2 20 15 43 20
30 12 36 40 57 55 4 0 22 6 51 30
4-5 10 47 35 65 40 5 4
1 42 33
30 12 35 45 65
45 6 5 0 30 14 48 36
55 20 40 40 34 35 7 10 0 30 12 58 32
44 19 35 45 55 42 8 10 0 20 12 50 28
138 12 33 58
38 9 30 0 22
25 20 43 60
Mean of Miles.
35-5 15-0 36-2 43-5
APPENDIX, No. II.
REPORT RESPECTING THE STREET PAVEMENTS, ETC. OF
THE PARISH OF ST. GEORGE, HANOVER SQUARE.
1. PRESENT STATE.
In consequence of an application to me by the Pavement Committee of the inhabitants of this extensive parish, I examined the present state of the carriage-way and foot-path pavements, and endeavoured to learn the various circumstances connected therewith; I also made observations on the nature of the bottoming and shape of the stones.
The notorious imperfection of the carriage-way pavement having been the cause of this Report, it is needless to state, that the surface is generally very uneven, and not unfrequently sunk into holes, so as to render it not only incommodious but dangerous to horses and wheel carriages.
The causes of this imperfection are various, and of an extensive and serious nature.
The stones, though generally of a tolerably good quality, are so irregular in their shape, that even their surfaces do not fit; they almost universally leave wide joints, and, instead of these joints being dressed square down from the surface, that is, at right angles with the face, they more frequently come only in contact near the upper edges, and, by tapering downward, in a wedge
like form, have their lower ends very narrow and irregular, leaving scarcely any flat base to bear weight.
This form also unavoidably leaves a great portion of space between the stones, which the workmen fill with loose mould or other soft matter of which the bed or subsoil is composed.
Another great defect is caused by inattention to selecting and arranging the sizes of stones; they are but too commonly so mixed, that large and small surfaces are placed alongside of each other, and, acting unequally in support of pressure, create a continual jolting in wheel carriages, which, adding percussion to weight, is a powerful and destructive agent.
I must add to these defects another of an equally serious nature, that is, the imperfection of the bed on which the stones are placed.
This bed has, hitherto, but too generally, been formed of very loose matter, easily convertible into mud; and this matter, instead of being compressed by artificial means, has unavoidably been loosened by a sharppointed instrument, to suit the irregular depth and narrow bottoms, and to fill the chasms between the joints of the paving-stones. From the width and irregularity of the joints, water easily sinks into, and converts the before-mentioned soft matter into mud, which, by the continual and violent action of carriage wheels, is
orked upon the surface, and leaves the stones unsupported.
This operation must be very evident to every person who reflects upon the sudden accumulation of mud upon the surface of the carriage-way pavement after a light rain, &c., or a continuance of soft weather.
This accumulation of the before-mentioned defects
has, by degrees, arisen from carrying (perhaps, well intentioned) economy to much too great an extent, and which has been accomplished by the easiest of all means, that is, promoting too indiscriminate a competition, and thereby reducing the price so unreasonably low, as to oblige contractors to procure inferior materials, and prevent them from bestowing the necessary portion of labour upon dressing and setting them.
There is a defect also respecting the management of contracts, in so far as to proceed by the almost unavoidable, and hitherto unchecked, mode of performing the work by the square yard of certain depths (say nine inches). Now, as I understand that the paving-stones are usually purchased by the contractors by weight, the more imperfect the shape is, the more profit he will have upon the superficial yard, which unavoidably must consist of a very considerable portion of loamy material, which is soon converted into mud.
The mode of repairing the carriage-way, if I am rightly informed, is equally imperfect, and has, no doubt, in a considerable degree, also arisen from the gradual introduction of low prices for repairing with old stones, by the square yard, however frequently repeated. This naturally produces hasty and imperfect workmanship.
The streets have likewise, of late years, been greatly disturbed by the laying down and repairing of waterpipes, &c. &c.
2. PROPOSED MODES OF CONSTRUCTING MORE PERFECT
The foregoing statement renders it sufficiently evident that the carriage-way pavements of the metropolis