RETENDER - BORING AND SAMPLE COLLECTION AT HARBOUR PREMISES-Investigation Work-TANUR FISHING HARBOUR INMALAPPURAM DISTRICT

APPENDIX -A- Boring work in SEA

65.72:Boring work in sea/ river in all classes of soils including laterite or granite, such as driving down and drawing out the casing pipe , connecting and disconnecting drill rods, doing drilling operations, jetting water, collecting SPT samples etc, as per the instruction of the departmental officers at site including hire charges of departmental boring plant and its accessories etc, complete

OD3556/2025-2026:Diver with driving set <br>

65.68:Supplying fibre boat with out OBM of size three meter to six meter with two boatmen to carry boring tower and boring accessories

65.70:Assembling the boring plant, boring tower, wooden platform, pump set, engine etc for boring works at required points in sea including unloading them from changadam and as per the direction of departmental officers at site

65.74:Supplying watchman for watching the boring tower, plant etc, during working hours - in sea

65.75:Dismantling boring tower, wooden plat form, boring plant and all other accessories like engine, pump set, casing pipes, drilling rods etc, complete as per the instruction of the departmental officers at site and loading them on the changadam for conveying them to the required points in sea.

65.71:Towing the changadam with boring tower, boring plant and all other accessories through sea with out causing any damages to the departmental machineries and materials using mechanised boats and anchoring it at places pointed out by departmental officers at site

APPENDIX -B- Boring work in Land

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.

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

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.