URGENT MAINTENANCE OF DETERIORATED SURFACE OF PQC BLOCKS OF CG DISPERSAL AT CGAE GOA UNDER GE (I) (CG) GOA

Demolition of cement concrete such as PQC, DLC (unreinforced) in ground floors and pavings exceeding 15 cm thickness (above ground level) complete all as specified and directed Note: (a) Care shall be taken during demolition of concrete, existing lights, cables wherever encountered shall be removed carefully and refixed as per position after laying of PQC. (b) The rate quoted shall deemed to include for these extra precautionary measures. (c) The demolished material shall be the property of contractor, the same will be issued through schedule of credit and required to be removed out of Min of Defence land in time bound manner. No conveyance charges will be admissible on this regards.

Excavating over areas not exceeding 1.5 m deep and getting out hard dense soil (Sand, WMM,GSB etc layers up to subgrade level) complete all as specified and as directed Note : The excavated material (including aggregates etc.) shall be the property of contractor, the same will be issued through schedule of credit and required to be removed out of Min of Defence land in time bound manner. No conveyance charges will be admissible on this regards.

Material and labour for 200mm thick granular sub base (GSB) grading V of IRC, in two layers of 100mm (spread thickness) each compacted separately, confirming to grading as specified, spread, rolled and consolidated to required and camber complete using necessary mechanical paver/ grader and 8 to 12 tonne power road roller to a true surface to achieve minimum 25 CBR in field as specified in MORTH specification Orange book (Fifth revision) complete all as specified and as directed. Note: (i) Rate shall be quoted for 200mm thick in two layers each 100mm thick. (ii) Each layer shall be rolled and consolidated separately. (iii) Compaction of GSB shall be carried out under optimum moisture conditions to achieve 98% of modified proctor density.

Rolling and consolidating formation surfaces in cutting with power roller exceeding 8 Ton but not exceeding 12 Ton capacity etc complete all as specified and as directed. Note: Rolling shall be done on newly exposed soil after excavation (Moorum or WMM as the case may be). Care shall be taken to maintain the slope as required.

Material and labour for laying and compacting 150 mm thick (laid in two layers of compacted thickness 75mm each layer) Wet Mix Macadam (WMM) grading as per table 400-13 of MoRTH specifications for Road and Bridge works 2013 manufactured in WMM plant material comprising of clean, crushed, graded aggregate and granular material premixed with water to a dense mass, spreading with sensor paver and rolling with vibratory/ power roller of capacity 80-100KN static weight and consolidating to required gradient and camber. The finished surface tolerances to be as per Table 900-1 of MoRTH specifications for road and bridge works 2013 complete all as specified and as directed. Note: (i)The rate quoted by the contractor shall include for carrying out sufficient number of 'plate load tests' as per latest relevant IS codes on exposed soil surface after demolition of Concrete and removal of Soling at the depth as per design. Contractor is allowed to progress further only when the obtained 'K- Modulus of Subgrade reaction' of soil is more than assumed value of 'K'. In the event of obtained 'K' value is less than assumed 'K' value, the matter shall be brought to the notice of accepting officer before proceeding further. The contractor cannot claim financially for the delay in obtaining final design of the Dispersal / Turnpad based on obtained 'K' value. (ii) Rate inserted in this item is for 150 mm thick (consolidated thick ) in two layers each 75mm. (iii) WMM shall be as specified in MoRTH specification Orange book (Fifth revision) as detailed in Particular specifications

Material and labour for laying 100mm thick dry lean concrete (DLC) aggregate gradation as per Table 1 of SP 49: 2014 having 7 days average compressive strength not less than 7 Mpa. Minimum cement content not less than 140 Kg/Cum DLC mixed in batching plant, transported to site and laid by electronic sensor paver including spreading and compacting using high amplitude tamping bars of paver (initial compaction) further by double drum smooth wheeled vibratory rollers with 80-100 KN static weight to achieve minimum dry density, necessary finishing etc and tolerance to be as per table 900-1 of MoRTH specifications for road and bridge work 2013 complete all as specified and as directed. Note : No price adjustment shall be applicable if excess quantity of cement content is used / approved based on mix design in the execution of work under this item.

Material and labour for 10 mm thick sand cushion with clean river sand duly clear of residual, organic and deleterious materials spread evenly to uniform thickness laid over DLC layer complete all as specified and as directed.

Supply and laying 400 micron thick HDPE sheet (Virgin quality) water proof, wrinkle free without puncture having minimum weight 390gm/Sqm over tack coat/ Sand cushion as specified in the design with overlap between adjacent strips and at transverse joints as minimum 300mm complete all as specified and as directed Note: Measurement shall be of net area. Quoted rates shall deemed to include for over lapping also.

Material and labour for pavement quality concrete (PQC) of minimum 28 days field flexural strength of 45Kg/ Sqcm or 4.5 Mpa, aggregate gradation as per Table 3 of IRC 15 2017, coarse aggregate of clean, hard strong, dense non-porous and durable pieces of crushed stone o gravel, fine aggregates of clean natural sand or crushed stone sand or combination of both using minimum 360 kg/cum of cement with non-circular virgin synthetic fibre of 12-18 mm length, specific gravity 1.34 to 1.39, UV stable, alkali resistant, with equivalent dia 15-40 micron, minimum melting temperature as 240°C and minimum tensile strength of 300 Mpa and at the rate as specified by the manufacturer. PQC laid, spread and compacted with slip-form paver of minimum 7.50 m width , including curing and tinning by Texturing cum Curing Machine. Required surface texturing to be done as specified in clause 10.1.14 and table-9 of IRC 15-2017 (PQC thickness not less than 200 mm) complete all as specified and as directed. Note : Plate load tests shall be carried out necessarily as per IS provisions. Number of tests as per latest IS Codal provisions. The rate quoted shall include in above item it self.

Supply only non circular synthetic fiber reinforcement all as manufacturer instructions complete all as specified and as directed.