REQUEST FOR PROPOSALS

ii.
iii.
• embankment condition; and
• drainage condition
Pavement Condition
cracking (narrow and wide cracking), % of pavement area affected;
raveling, % of pavement area affected; potholing, % of pavement area
affected; edge break, length (m); and,
rut depth, mm
Shoulder Condition
Paved: Same as for pavement
Unpaved: material loss, rut depth and corrugation,
Edge drop, mm.
Embankment Condition
General condition; and extent of slope erosion
The objective of the road and pavement condition surveys shall be to identify
defects and sections with similar characteristics. All defects shall be
systematically referenced, recorded and quantified for the purpose of
determining the mode of rehabilitation.
The pavement condition surveys shall be carried out using visual means.
Supplemented by actual measurements and in accordance with the widely
accepted methodology (AASHTO, IRC, OECD, TRL and World Bank
Publications) adapted to meet the study requirements. The measurement of rut
depth would be made using standard straight edges
iv. The shoulder and embankment conditions shall be evaluated by visual means and the
existence of distress modes (cuts, erosion marks, failure, drops) and extent (none,
moderate, frequent and very frequent) of such distress manifestations would be
recorded.
v. For sections with severe distresses, additional investigations as appropriate shall be
carried out to determine the cause of such distresses.
vi. Middle 200m could be considered as representative sample for each one km. of road and
incase all other things are considered similar.
Drainage Condition
General condition
Connectivity of drainage turnouts into the natural topography condition
in cut sections
Condition at high embankments
The data obtained from the condition surveys should be analysed and the road
segments of more or less equal performance may be identified using the criteria given
in IRC: 81-1997.
3. Pavement Roughness
i. The roughness surveys shall be carried out using Bump Integrator or similar
instrument. The methodology for the surveys shall be as per the widely used standard
practices. The calibration of the instrument shall be done as per the procedure given in
the World Bank’s Technical Publications and duly got authenticated by established
laboratory/institution acceptable to the client.