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30. As per Para.1.2 of the Manual, the project highway and the project facilities shall conform to the requirements of design and specifications set out in the Manual, which are the minimum W.P(C)Nos.14183 of 2021, 14347 of 2021 & 17244 of 2021 prescribed. The project report and other information provided by the Authority shall be used by the concessionaire only for its own reference and for carrying out further investigations. The concessionaire shall be solely responsible for undertaking all the necessary surveys, investigations and detailed designs in accordance with good industry practice with due diligence, and shall have no claim against the authority for any loss, damage, risk, costs, liabilities or obligations arising out of or in relation to the project report and other information provided by the Authority. As per Para.1.4 of the Manual, the Codes, Standards, Technical Specifications and Guidelines applicable for the design and construction of project components are (i) Indian Roads Congress (IRC) Codes, Standards and Guidelines; (ii) Specifications for Road and Bridge Works issued by MoRTH; (iii) any other standards referred to in the Manual and any supplement issued with the bid document. As per Para.1.5, the version of the Codes, Standards, Specifications, etc. notified/published at least 60 days prior to the last date of bid submission shall be considered applicable. As per Para.1.8, in case of any conflict or inconsistency in the provisions of the applicable IRC Codes, Standards or MoRTH Specifications, the provisions contained in this Manual shall prevail. W.P(C)Nos.14183 of 2021, 14347 of 2021 & 17244 of 2021

35. Section 4 of the Manual deals with embankment and cut sections; Section 5 deals with pavement design; and Section 6 deals with highway drainage. Section 7 of the Manual deals with design of structures. As per clause (i) of Para.7.1, all structures shall be designed in accordance with the relevant Codes, Standards and Specifications, Special Publications and Guidelines of the IRC. Construction of all culverts, bridges and grade-separated structures shall conform to MoRTH Specifications for Road and Bridge Works. Section 8 of the Manual deals with materials. As per Para.8.1, all materials to be used in works shall be in conformity with the requirements laid down for relevant item in MoRTH Specifications. If the concessionaire proposes to use any material, which is not covered in MoRTH Specifications, it shall conform to IRC or relevant Indian Standards, if there are any, or to the International Standards. W.P(C)Nos.14183 of 2021, 14347 of 2021 & 17244 of 2021 Proprietary products proposed to be used shall be proven by use in comparable international road and bridge projects, and shall be supported with authenticated licensing arrangement with the manufacturer.

41. As per the Manual, the Codes, Standards, Technical Specifications and Guidelines applicable for the design and construction of project components include Indian Roads Congress (IRC) Codes, Standards and Guidelines. The objective of the Manual is to construct four-lane highways for all road users as an active infrastructure facility for people for their safety and services and as a catalyst in the development of the economy based on an inclusive approach. The Manual lays down standards for geometric design and general features for four-lane divided carriageways. The geometric design of the project highway shall conform to the standards set out in Section 2 of the Manual, as a minimum. The design speeds given in Table 2.1 of the Manual shall be adopted for various terrain classifications.

42. As per the Manual, properly designed intersections shall be provided at all road crossings/junctions, so as to ensure that no W.P(C)Nos.14183 of 2021, 14347 of 2021 & 17244 of 2021 intersection remains without safe and efficient design. All structures shall be designed in accordance with the relevant Codes, Standards and Specifications, Special Publications and Guidelines of the IRC. All materials to be used in works shall be in conformity with the requirements laid down for the relevant item in MoRTH Specifications. Mandatory/regulatory road signs, cautionary/ warning signs and informatory signs shall be provided as given in IRC:67 and Section 800 of MoRTH Specifications. Wherever the project highway alignment is on a curve, there shall be advance cautionary signs for sharp curves and chevron signs at the outer edge of the curve.