DEPOSIT General construction of new bridge over Chithrapuzha bridge and four lane development from Chithrapuzha Junction to HOC from CH 19 940 21 940 Topographical survey Topographical Survey Work

DGPS survey,Topographical survey,Inventory

OD207097/2025-2026:Providing and fixing RCC pillars for DGPS control points of size 0.3 m x 0.3 m,0.5 m long, 0.1 m above ground level and 0.4 m below GL casted in M20 Grade concrete reinforced with 4 nos of 8 mm dia longitudinal bars and 6mm dia stirrups @ 0.15m c/c, firmly fixed in position by means of PCC of 0.1m wide and 0.4 m deep around the pillars in M15 grade concrete below ground level including painting 2 coats on exposed surface with synthetic enamel paint

OD207101/2025-2026:Providing and fixing RCC pillars at every 250 m interval along the road, of size 0.15 m x 0.15 m, 0.45 m long, 0.15 m above ground level and 0.3 m below GL casted in M20 Grade concrete reinforced with 4 nos of 8 mm dia longitudinal bars and 6 mm dia stirrups @ 0.15 m c/c, firmly fixed in position by means of PCC of 0.075 m wide and 0.3 m deep around the pillars in M15 grade concrete below ground level including painting 2 coats on exposed surface with synthetic enamel paint

OD207098/2025-2026:To carry out Traverse to establish horizontal control stations on the proposed road stretch running through from one DGPS stations at every 2.5km using eletronic total station instrument at maximum of 250m intervel with an accuracy of 1 in 20000 which includes submission of hard and soft copies as per IRC standards.

OD207100/2025-2026:To carry out DGPS Survey to establish primary control points- it includes observation of road data by using dual constellation GNSS receiver, processing,network,adjustments and submission of data in WGS 84 datum and UTM/TM projection system including traverse report (one intervisible pair per 5km).

OD207096/2025-2026:Fly levelling to shift levels from given bench mark value to next bench mark station to horizontal traverse stations and availablr permanent structures all along the road for the elevation purpose by closed circuit which includes submission of hard and soft copies as per IRC standards.

OD266421/2025-2026:Data for inventory survey of the road for survey work of collecting road inventories and recording in prescribed format attached based on chainage marking including marking chainage at 50 m interval and taking details such as existing carriageway width,shoulder width,type of shoulder,width and location of approach road, details of existing drains, culverts and bridges as given in the format attached, pavement conditions(details of potholes,raveling,fog seal,slurry seal edge damage etc)road safety measures (details of road sign, crash barriers,guard stones,delineator post,hazard markers, location of bus bays,parking lots etc) and all other existing retainin g structures in road including documentation charges etc. as per direction of the officers at site

site clearence,River cross section

56.13:Providing access to the site clearing site and making good for surveying in order to provide clear line of site devoid of any hindrance due to vegetation etc. and clearing areas for station points (This item is applicable only for sites without access such as in case of new road formation, bridge and building sites at in accessible locations).

56.12.b:Total station surveying and preparation of site plan - Plain built up area with hindrance to line of sight due to buildings/structures.

56.14.a:Cross sectional details - River.

56.15.a:Hydraulic Velocity Calculation - River.

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