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Quality Assurance Handbook for Rural Roads Volume-I - pmgsy

Quality Assurance Handbook for Rural Roads Volume-I - pmgsy

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227<br />

<strong>Quality</strong> <strong>Assurance</strong> <strong>Handbook</strong> <strong>for</strong> <strong>Rural</strong> <strong>Roads</strong><br />

(viii) Signs with a maximum side dimension not exceeding 600 mm shall not be less than 1.5 mm<br />

thick. All others shall be at least 2 mm thick. The thickness of the sheet shall be related to the<br />

size of the sign board and its support and shall be such that it does not bend or de<strong>for</strong>m<br />

under the prevailing wind and other loads.<br />

(ix) In respect of sign sizes not covered by IRC:67, the structural details (thickness, etc.) shall be<br />

as per the approved drawings.<br />

2. Road Markings<br />

Ordinary paints shall be used <strong>for</strong> road markings, con<strong>for</strong>ming to IS:164. These shall have a wear<br />

resistance of at least 4 hours under accelerated laboratory test. Yellow colour (con<strong>for</strong>ming to IS<br />

colour No. 356) as given in IS:164, white and black colours are the standard colours used <strong>for</strong><br />

markings.<br />

C. Do’s and Don’ts<br />

Do’s Don’ts<br />

1. Insist on a minimum three year warranty <strong>for</strong> the MS<br />

or GI sheets being purchased from the supplier.<br />

2. Ensure that the edge of the Road Sign adjacent to<br />

the road is at least 2.0 m away from the edge of the<br />

carriageway.<br />

1. Do not keep the lowest edge of Road Sign less than 2.0<br />

m above the crown of the road<br />

2. Do not cause inconvenience to traffic while painting<br />

operations are in progress.

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