Concrete Roads
and Their Construction

År: 1920

Serie: Concrete Series

Forlag: Concrete Publications Limited

Sted: London

Sider: 197

UDK: 625.8 Con-gl.

Being a Description of the concrete Roads in the United Kingdom, together with a Summary of the Experience in this Form of Construction gained in Australia, Canada, New Zealand and the United States of America.

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Side af 256 Forrige Næste
64 CONCRETE ROADS of 12 in. at the sides, which was finished smooth—was tar-sprayed and chipped with | to |-in. whinstone chips. No expansion joints were put in transversely, but along both kerbs were laid |-in. white pine boards the depth of the concrete. It was intended to remove these and fill the cavity with pitch, but wet weather interfered and the wood was left in. The cost of the work, which included the removal of the old setts, excavation, filling trenches for gas, water, etc., with 6 to 1 concrete, the concrete in the roadway, the fabric and the wood slips along kerbs, was 10«. 4d. per super, yard, and the tar-spraying 1 Id. per super, yard. Latest Report— When the road was last inspected by the Burgh Engineer in September, 1919, it was found by him to be in as good a condition as on the day it was laid. He further reports that the only maintenance necessai’y between October, 1916, and the date of his leaving Dunfermline in 1919, was an annual tar- spraying and chipping, which was carried out at an expense of less than £5 per annum. During the first year the road had to carry a heavy motor- bus traffic, which was suspended in 1917. But apart from this the road continued to bear a very heavy general traffic, including that of traction engines, with no apparent detriment to the surface. Mr. Smith states that from the experience gained in Canmore Street, Dunfermline, he is quite prepared, should occa- sion arise, to recommend the adoption of a similar construction for roads of a like nature. He is satisfied that where the surface is kept well covered with a coating of tar and chips, such a road will last for many years and will repay the time and cost expended upon it by a greatly reduced cost in annual maintenance. The above report is borne out by the present Burgh Engineer, Mr. R. Muir Morton, who, writing in November, 1920, stated that “ the condition of the road to-day is very satisfactory, and, beyond requiring a new coat of tar, which it will receive in the spring, no fault can bo found with the surface of the road. 1 hs work as it now stands is satisfactory and it is not anticipated that any extraordinary expense will have to be incurred thereon for a very considerable time. Edinburgh Blackwood Crescent.—That concrete roads are not the novelty which is often supposed is shown by the fact that the concrete