RFP for BHOPAL & Narmadapuram Division - Madhya Pradesh ...

ecommendations given in widely used international practicesincluding AASHTO, NAASRA, RTAC and TRL wherever.4.9.6.4.3 The design of pavement shall be rigorous and shall make use ofthe latest Indian and International practices. The designalternatives and the most appropriate design, option shall beestablished on life-cycle costing and techno-economicconsideration.4.9.6.4.4 For the design of pavement, each set of design input shall bedecided on the basis of rigorous testing and evaluation of itssuitability and relevance in respect of in-service performance ofthe pavement. The design methodology shall accompany thedesign proposals and shall clearly bring out the basic assumptions,values of the various design inputs, rationale behind the selectionof the design inputs and the criteria for checking and controlduring the implementation of works. In other words, the design ofpavement structure should take due account of the type,characteristics of materials used in the respective courses,variability of their properties and also the reliability of trafficpredictions. Furthermore, the methodology adopted for the designof pavement shall be complete with flow charts indicating thevarious steps in the design process, their interaction with oneanother and the input parameter required at each step.4.9.6.4.5 For the design of overlays for the existing pavement, thestrengthening requirement shall duly take into account the strengthof the existing pavement vis-à-vis the remaining life. The overlaythickness requirements shall be worked out for each road segmenthomogenous with respect to condition, strength and sub-gradecharacteristics. The rehabilitation provisions should also includethe provision of regulating layer. For existing pavement withacceptable levels of cracking, provision of a crack inhibiting layershould also be include.4.9.6.4.6 Latest techniques of pavement design and rehabilitation likeprovision of geo-synthetics and cold/hot pavement recycling, useof modified bitumen etc. should be duly considered.4.9.6.4.7 Deleted.4.9.6.5 Design of Embankments4.9.6.5.1 The embankments design should provide for maximumutilization of locally available materials consistent with economy.Use of fly ash wherever available within economical leads andtechnically feasible must be considered. In accordance withADB-IV51