GENERAL-Investigation Estimate for Improving the sharp curve at ParakkadavuMarika Junction-Investigation estimateInvestigation Work

Inventory Survey

OD128461/2025-2026:Data for inventory survey up to 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 50m 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) chainage-wise details of villages, exposed rock , stretches prone to land slide and all other existing retaining structures in road, including documentation charges etc.. as per direction of the officers at site

Topographic Survey

OD128427/2025-2026:Establishing DGPS control points on TOR steel bar of 10 mm dia fixed in RCC pillar of size 20X20X70cm embedded in concrete M15 up to a depth of 40 cm and the balance 30 cm above the ground shall be painted yellow

OD128431/2025-2026:Establishing traverse control points with elevations on pillar of size 15cmX15cmX60cm M20 grade RCC pillar with a nail fixed on the top surface. The pillars shall be embedded in the concrete. Spacing 250 m apart as a bench mark - control pillar. The spacing shall be maximum 250 m apart and inter visible. No separate bench mark need to be established

OD128432/2025-2026:Detailed topographic survey using Total station/mobile Lidar and preparation of site plan of minimum of 15m on either side of the centre line and taking cross section details at 25m intervals on straight roads and 10m interval on curves ( survey includes details of all features as mentioned in the scope of the in plain terrain work within the limit of survey). The survey shall be include establishing DGPS Control points at starting and ending of the project in pairs and at 4Km intervals (in pairs) in plain and rolling terrain and 2.5Km intervals ( in pairs) in hilly terrains. It shall also include establishing inter visible traverse control points note more than 250m apart with accuracy at least 1:10000 and desirable 1:20000 in distance measurement. Elevations on each of the control points connected to MSL of GTS Bench marks. Using precision levelling. Separate bench marks need not be established. Including Taking sufficient Color copy prints (5nos)

Soil Investigation Report

OD128451/2025-2026:Engaging labour for assisting and collecting samples

OD128452/2025-2026:Conducting sub soil investigation test at suitable intervals including taking samples grain size analysis, temperature measurement, atterberg limits, soaked CBR etc and submitting completed reports etc

Traffic Survey

OD128449/2025-2026:Taking traffic count at 3 locations in the junction for 12 hours(8.00 AM to 8.00 PM)continuously by recording the classified volume count in the prescribed format including necessary arrangements for counting shed,furniture,stationery,labour,preparation of report etc

OD128433/2025-2026:Conducting one test consisting of taking deflection at 10points at 50m interval on one km stretch according to specification given in 81-1997, number of test conducted is as directed by the engineer in charge- conducting laboratory test to get moisture content and soil classification as per IS standards - For arranging equipment for testing 1km test taking one and half hour - Calculating Characteristic deflection of one test from one test data obtained from part 1 ( one test data means comprising of taking deflection at 10 points at 50m interval in 1km stretch according to the specification given in IRC81-1997) and submitting in hard and soft copy

Pavement Composition

OD128453/2025-2026:Study of pavement composition by cutting open pit at tar edge to get the details of layers (thickness and type ) of pavement composition - at one location as suggested by the engineer in charge carefully by excavating pit of area 1.00x 0.60m through overlaying bituminous and granular layer including BC, DBM/BM, WMM and GSB at tar edge and refilling and compacting the excavated pit to lines and levels with excavated materials as directed by the departmental officers at site and reporting the pavement composition with photographs and measurements specifying the type of layers

Subsoil Investigation

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.

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

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.

56.8: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.

56.11.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.

Final Alignment

OD128460/2025-2026:Prepare detailed alignment plan (6 copies) with all survey no. from Lithomaps including all structure details, road inventories, boundaries , suitable alignment plan for suitable for road as per IRC/KIIFB norms , economic design of road etc complete as per direction of departmental officers