Magic touch
Page 34
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How is it possible to decide just when a highway requires resurfacing and to what extent? In the past the matter has been largely one for the personal judgment of the official concerned. In the future, direct measurement will undoubtedly be used. Something of how this can be done was seen by visitors to the Road Research Laboratory stand at the recent Public Works and Municipal Services Exhibition.
An outstanding factor in this connection is SCRIM (the sideways-force co-efficient routine inspection machine) which has been designed and developed by the RRL. A model showed how the slipperiness of the surface is monitored, the machine giving an immediate indication of places where the sideways-force co-efficient falls below the recommended standard. A Ford D600 chas sis is used to carry the equipment which has been designed and made by Denis Ferranti Meters Ltd. of Bangor, North Wales. Tests of the prototype are continuing and it is expected that production models will be available in the early part of 1970.