(NAR) VOL. 22 NO. 3, JULY - SEPTEMBER 2011
- For new road construction, rehabilitation or upgrading, the minimum thickness of the pavement shall be 280 mm. However, a thickness of less than 280 mm. but in no case less than 230 mm., may be adopted if the Cumulative Equivalent Single Axle Load (CESAL) is not more than 7.0 x 106. The procedure for calculating the CESAL is hereto attached as Annex A*.
- For pavement rehabilitation using the crack and seat method, a minimum thickness of 260 mm. shall be adopted for the new pavement that will be constructed on top of the deteriorated concrete pavement.
- For pavement reblocking, the thickness of the new pavement shall be the same as the replaced blocks.
- For overlaying works, the minimum thickness of the overlay shall be 50 mm.
- On grounds of economy, pavement thickness of more than 50 mm. shall be considered only if the cost of the asphalt pavement of such thickness is less than the cost of a 230 mm. thick PCCP.
- In new construction, the minimum width of the carriageway shall be 6.70 meters.
- In rehabilitation or upgrading works involving a length of at least 500 meters, the minimum width of the carriageway to be adopted shall be 6.70 meters, provided that such works will not require right-of-way acquisition.