REQUEST FOR PROPOSALS

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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.
ii. iii. The surveys shall be carried out along the outer wheel paths. The surveys shall cover a minimum of two runs along the wheel paths for each direction. The results of the survey shall be expressed in terms of BI and IRI and shall be presented in tabular and graphical forms. The processed data shall be analysed using the cumulative difference approach to identify road segments homogenous with respect to surface roughness. 4. Pavement Structural Strength i. The Consultants shall carry out structural strength surveys for existing pavements using Benkelman Beam Deflection technique in accordance with the CGRA procedure given in IRC:81-1997 (“Guidelines for Strengthening of Flexible Road Pavements Using Benkelman Beam Deflection Technique”). ii. iii. iv. It is suggested that the deflection surveys may be carried out as per the scheme given below: Mainline testing; and, control section testing. The deflection tests for the mainline shall be carried out at every 500 m along the road sections covered under the study. The control section testing shall involve carrying out deflection testing for each 100 m long homogenous road segment along the road sections. The selection of homogenous segment shall be based on the data derived from pavement condition surveys. The total length of such homogenous segments shall not be less than 100 m per kilometre. The deflection measurements for the control section testing should be at an interval of not more than 10 m. Test pits shall be dug at every 500 m and also along each homogeneous road segment to obtain pavement composition details (pavement course, material type and thickness) so as to be able to study if a correlation exists between deflection and composition. If so, the relationship may be used while working out the overlay thickness for the existing pavement. v. Benkelman Beam Deflection surveys may not be carried out for severely distressed sections of the road warranting reconstruction. The Consultants, immediately upon the award of the contract, shall submit to NHIDCL the scheme describing the testing schedule including the interval. The testing scheme shall be supported by data from detailed reconnaissance surveys. vi. In case, the Consultants wish to use any acceptable method(s) other than Benkelman Beam deflection technique for the evaluation of pavement strength, viz. Falling weight deflectometer method etc details of such methods or innovative features for deflection testing using Benkelman Beam technique along with the methodology for data analysis, interpretation and the use of such data for pavement overlay design purposes using IRC or any other widely used practices, such as AASHTO guidelines, should be got approved by NHIDCL. The sources of such methods should be properly referenced. 4.11.3.3 Subgrade Characteristics and Strength 1. Based on the data derived from condition (surface condition, roughness) and structural strength surveys, the project road section should be divided into segments homogenous with respect to pavement condition and strength. The
Page 1 and 2: National Highways & Infrastructure
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Page 5 and 6: Letter of Invitation (LOI) Package
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Page 11 and 12: assignment on the project. After th
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10. I/We further certify that in re
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APPENDIX-II Form- E3 Deleted
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(Form-T1) Appendix III TECHNICAL PR
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Deleted Form-E2/T3
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Deleted Form- T5
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Form- T7 . Deleted
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Facility for Field investigation an
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Form- T11 UNDERTAKING FROM THE KEY
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(Form-II) Format of Financial Propo
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Package no. NHIDCL/DPR/IM & UJ/2016
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VIII Reports and Document Printing
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Form-IV) Estimate of Costs for Expa
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APPENDIX- IV A Validate Print Help
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Note 1:No escalation will be payabl
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CONTENTS Sl. No. Description Page N
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Appendix A: Terms of reference cont
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Appendix F: Minutes of Financial/ C
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1. GENERAL PROVISIONS GENERAL CONDI
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Client under this Contract, includi
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2.7.5 Payments During the period of
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Clause 2.9.1 hereof, reimbursement
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3.7 Consultants' Actions requiring
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themselves on valid grounds, e.g.,
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Services; 5.2 Access to Land The Cl
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Note: Consultants have to provide a
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7.3. Penalty 7.3.1. Penalty for Err
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10. Change of Scope The change of S
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1.10 The Consultants and the person
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shall serve in that capacity, as sp
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Extra charges for days other Rs 3,5
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Appendix B Consultants’ Sub Consu
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Appendix D Duties of the Client
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Appendix F Minutes of Financial/ Co
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Copy of letter of acceptance Append
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" "
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including and shall be extended fro
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National Highways & Infrastructure
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REQUEST FOR PROPOSALS

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