KIIFB-Improvments to Kuruthikkalam Chelachuvadu road stretch 2 Thodupuzha(Mangattukavala) Njarukutti Vannapuram Ch 0/000 to 15/933 in Idukki district Topographical Survey Investigation Work

Amount

Topographical Survey Markings

OD211841/2023-2024 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`

OD211861/2023-2024 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

DGPS Survey,Fly level,Total station survey,Inventory

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).

OD211913/2023-2024 To carry out DGPS survey to establish primary control points - it includes observation of rawdata by using dual constellation GNSS receiver, processing, net work, adjustment and submission of data in WGS 84 datum and UTM/TM projection system including traverse report ( One intervisible pair per 5 Km)

OD210663/2023-2024 To carry out Traverse to establish horizontal control traverse stations on the proposed road stretch running through from one DGPS station at every 2.50 km using electronic total station instrument at maximum of 250 m imnterval with an accuracy of 1 in 20000 which includes submission of hard and soft copies as per IRC standards

OD210664/2023-2024 Fly levelling to shift levels from given Bench mark value to next Bench mark station to horizontal traverse station and available permanent structures all along the road for the elevation purpose by closed circuit which includes submission of the hard and soft copies as per IRC Standards

OD210665/2023-2024 Total station surveying and preparation of site plan, Cross sections and Longitudinal sections are to be collected at 15 m intervals, The levels shall be taken at closer intervals at the curve portions, intersections and change in elevations, the intervals also shall be modified as per IRC : SP -19 - Plain built up area with hindrance to line of sight due to buildings/structures.(ref 56.12.b)

OD217065/2023-2024 Total station surveying and preparation of site plan Cross sections and Longitudinal sections are to be collected at 15 m intervals, The levels shall be taken at closer intervals at the curve portions, intersections and change in elevations, the intervals also shall be modified as per IRC : SP -19- In hilly terrain.(ref 56.12.c)

OD210666/2023-2024 Data for inventory survey upto 12 meter wide 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 etc)and all other existing retaining structures in road including documentation charges etc as per direction of the officers at site

56.14.b Cross sectional details - Thodu

56.15.a Hydraulic Velocity Calculation - River

56.15.b Hydraulic Velocity Calculation - Thodu.

SPECULA CONSULTANCY AND DEVELOPERS PVT LTD

VINAYA KRISHNAN