GENERAL-IW-Investigation for Upgradation of Alakode Karimannur Kachirappara Road in Idukki District Investigation Work

Topographical Survey Markings

OD137479/2025-2026: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

OD137478/2025-2026: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

OD137491/2025-2026:Engaging coolie/labour for miscellaneous works

DGPS Survey, fly level ,Total station, Inventory

OD137477/2025-2026:To carry out DGPS survey to establish primary control points - it includes observation of raw data 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)

OD137474/2025-2026: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

OD137476/2025-2026: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

56.12.c:Total station surveying and preparation of site plan - In hilly terrain

OD137475/2025-2026: 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

Soil Investigation

56.1.a:Mobilization including transportation of all necessary plant and equipment's and materials of boring, field testing and sampling and demobilization after completing the work - For machine boring

56.2.a:Setting up boring at each bore hole locations including carrying all necessary plant, equipment and materials of boring and field tests and collection of samples at each bore hole location - For machine boring.

56.3.a.1:Boring with rotary power drilling equipment's in - all types of soil having N value less than 50 excluding hard rock, soft rock or medium rock for strata upto 10m including conducting necessary S.P.T and recovery of undisturbed soil samples at 5m intervals - For ordinary soil.

56.3.b.1:Boring with rotary power drilling equipment's in - all types of soil having N value less than 50 excluding hard rock, soft rock or medium rock for strata next 10m and upto a depth of 20m including conducting necessary S.P.T and recovery of undisturbed soil samples at 5m intervals - For ordinary soil.

56.3.c.1:Boring with rotary power drilling equipment's in - all types of soil having N value less than 50 excluding hard rock, soft rock or medium rock for strata next 10m and upto a depth of 30m including conducting necessary S.P.T and recovery of undisturbed soil samples at 5m intervals - For ordinary soil.

56.4:Boring through all type of hard rock or similar refusal strata of N value greater than 50 using diamond core drilling bit for in land under water and banks of river.

56.5.a:Boring through all classes of rock excluding hard rocks having N value greater than 50 using tungsten carbide drilling bit - In land

56.7:Conducting standard penetration test in bore hole at any depth.

56.8:Recovering disturbed samples and preserving the same in air tight sample containers including waxing labelling packing storing including cost of containers as per IS Code.

56.6:Recovering undisturbed soil samples using thin tube sampler of 75mm.to 100mm length internal dia 500mm length conforming to relevant IS Code at any required depth including clearing the bore hole etc complete.

56.11.a:Compilation of all field data with recommendation for a suitable foundation after conducting necessary lab test (report in triplicate) - Machine boring for 5 bore holes.

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