DPS stores building

General note applicable to all sections : 1) Only sieved river sand/crushed stone sand confirming to Zone-II from Godavari river or Varaha river or Vamsadhara river or Sarada river or Nagavali river / Crushed stone sand shall be used as fine aggregate and Graded hard broken granite metal of 3 stage (VSI) material shall be used as coarse aggregate in relevant items. Specification for fine and coarse aggregate shall confirm to IS:383 (latest revision) 2) In view of limit on water-cement ratio for durability requirements in design mix concrete, concrete admixtures (Carboxylate based superplasticizers of approved makes as per annexure B of section VII) can be used after taking prior approval of Engineer-in-Charge and the rates quoted for concrete items shall be inclusive of the cost of admixtures, Design mix, trial mixes, testing (at site & at approved labs), etc. complete. 3) The contractor shall set up sufficient number of self loading mobile concrete mixers inside the project area for the production of concrete. 4) Contractor may also be allowed to procure concrete from prior approved RMC plants on prior approval of the BARC subject to maintain required slump at site during pouring.To that extent suitable Mix Design should be carried out with required retention period. No extra payment will be made if concrete is brought from RMC plants outside the project area.

5) Manufacturer's Test certificate of cement which is procured from dealer/company is to be submitted for all cement related works by the contractor. 6) "Substructure" referes to the part of structure upto top level of ground floor grade slab and "Superstructure" refers to the part of structure above the top of the ground floor grade slab. 7) The Scope of works which are not included in any specific items but indicated in the document "General Scope of all works" shall be within the scope of overall contract works. The cost of work/item/material indicated in this document shall be deemed to be included in the quoted rates of all individual items. 8) The rate quoted for the items by the bidder shall include the approved make as per Annexure B of Section VII of tender document. Any other additional makes proposed by the bidder have to be informed to BARC before pre-bid meeting (to be held before submission of bids) and to be approved by BARC.

9) The quoted rates shall include necessary royalties, seigneiorage charges,etc. and all other charges to supply all the required construction materials. 10) For all standards and code of practices, specifications, like Indian Standard, MORT&H, ASTM, etc. refer only latest revisions including all applicable amendments, revisions and additional publications (during contract period) and these have to be followed. 11)Prior approval for source of all construction materials by submission of relavent test certificates, documents, invoices etc. have to be taken from BARC. 12) All the tests mentioned in Quality Assurance Plan(QAP) should be carried out without any extra cost. 13) The contractor has to submit all royalty /seigneiorage slips,etc for all the naturally available construction materials before submitting the RA bills.

Bored Cast In Situ Piles Forming vertical piles including initial test piles by boring through fill and all kinds of soils including hard murrum with gravel and chiselling through occassional boulders and soft / weathered / hard rock by Rotary Drilling method using crawler mounted telescopic boom hydraullic piling rig equipment including conducting standard panetration test for termination criteria using SPT equipment all as instructed by Engineer In Charge, carting away the bored excavated soil upto a lead of 600 metres at places shown inside BARC campus, fixing reinforcement as per drawing, casting the piles with Design mix concrete by tremie only, using graded stone aggregates of maximum size 20 mm, with minimum cement content of 400 Kgs. per cubic metre of concrete and with water cement ratio including the water contained in the aggregates not exceeding 0.40, etc. all as per drawing, technical specification, and as directed by Engineer-In-Charge. Note : (i) The Rate quoted shall include tremie concreting up to ground level to permit overflow of concrete or minimum 600mm above specified cut-off levels or as per site condition , cutting of piles at cut-off level specified including cost of all materials, admixtures (approved super plasticisers), if used with the prior approval of engineer in charge, labour, tools, excavation, dewatering by pumps or well points and also for cut-off chipping, all as required etc. ii)Excluding cost of steel reinforcement but including cost of boring with bentonite solution and temporary casing for appropriate length for setting out and removal of same complete. (iii) The rate of concrete shall include all labour, equipment, charges for mixing & cost of admixtures. (iv) Standard Penetration test for piles ,Reinforcement will be measured and paid separately under relevent item. (v) The Rate quoted shall also include mobilisation work including transporting to site all necessary plant, equipment, piling / boring rigs or rotary piling equipment, necessary pile load testing equipment and materials, making vats, mobilising personnel, etc., erecting and commissioning all piling/boring rigs, plant & equipment and removal of same after completion as required & directed by Engineer-in-Charge. (vi) Truck mounted rotary/TMR/Tube well boring machine shall not be used.

500 mm dia. Piles using M-35 grade concrete in ordinary soils, murrum, gravel, soft rock and occassional hard/weathered rock & boulders ( Note:Occassional hard/weathered rock means that which is encountered between the layers of soil and not continuous rock).

500 mm dia. piles using M-35 grade concrete in hard / weathered rock.

Empty boring for piling measured from working ground level to cut-off level of the piles for the 500 mm dia. piles.

Conducting Standard Penetration tests in piles as per IS 2131 till occurance of competent strata using SPT equipment all as instructed by Engineer In Charge. Note: Tests to be conduted till occurance of competent strata and only qualified single test per each pile will be measured for payment purpose.

Conducting Routine Vertical load testing of piles for a load upto 135 MT for a 500mm diameter pile in accordance with IS 2911 (PART IV) including installation of loading platform and preparation of pile head or construction of Test cap including cost of synthetic plaster and dismantling of test cap after test etc. complete all as per drawing, technical specifications & as directed by the Engineer-in-charge. Note: 1. Conducting tests on piles as mentioned in above items shall be at design load / working load of piles as per IS standards 2911 (Part - IV) and as directed by Engineer-in-charge. 2. Submission of test reports along with conclusions for all kinds of tests as soft as well as hard copy (three copies) as required by the Engineer-incharge. 3. The Rate quoted shall also include mobilisation work including transporting to site all necessary plant, equipment, piling / boring rigs or rotary piling equipment, necessary pile load testing equipment and materials, making vats, mobilising personnel, etc., erecting and commissioning all piling/boring rigs, plant & equipment and removal of same after completion as required & directed by Engineer-in-Charge. 4.Payment shall be made on number of tests conducted. 5.Displacements measuring equipment should include LVDT's and dail gauges

Integrity testing of Pile using Low Strain/ Sonic Integrity Test/ Sonic Echo Test method in accordance with IS 14893 including surface preparation of pile top by removing soil, mud, dust & chipping lean concrete lumps etc. and use of computerised equipment and high skill trained personal for conducting the test & submission of results, all complete as per direction of Engineer-in-charge.