TANKAGE WORKS-UCSPL FIRE WATER TANK

Excavation- All types soils upto — Excavation in all types of soils including soft rock Up to and including 2 m below NGL: Staking out & marking the outline & centre of excavation using Total Station; Earthwork in excavation in ordinary, hard & dense soils including soft rock for General site grading, tank pad foundations and any other work as per HPCL requirement for all depths as given below in all types of soils except soft rock and hard rock including removal of stumps and roots to full extent, if any ;removal of all vegetation including bushes and grass, dewatering, taking co-ordinate wise spot levels @ 5m c/c intervals in grid pattern, levelling, dressing and rolling the excavated surface. The excavated earth shall be separated in to serviceable earth and unserviceable earth; the serviceable earth shall be stacked separately at the site of excavation for re-use and the unserviceable earth shall be loaded, transported and unloaded & levelled at a designated dumping spot within HPCL plant premises.; all complete as per specifications and instructions of HPCL Engineer-in-Charge. Quoted rates are deemed to include payment of applicable royalty/seignorage, if any.All types of soils & soft rock which can be ordinarily excavated with bucket mounted excavator,backhoe or ripper mounted on dozer will be measured under this item.

Excavation below 2m and up to — Excavation below 2m and up to 3m below NGL: Same as Item No.10 above but including excavation & handling of additional lift as applicable

Excavation-Hard rock — Excavation in all types of hard rock including chiselling,controlled blasting after obtaining permission from requisite authority,chemical rock breaking with approved chemicals,drilling or hydraulic rock breakers all complete for a max depth of 1.50 m below NGL including preparation of rock stacks which will be measured after applying reduction of 50% for voids and after certification for hard rock through petrographic examination at an approved lab all complete.Based on instructions of EIC,the stack shall be disbursed and rock debris shall be transported & stored in a designated area inside premises for later re-use.

Backfilling — Carrying out backfilling with selected earth from serviceable earth stacked within Plant premises for all applicable leads & lifts to Site of work, spreading in layers of loose thickness not exceeding 150mm and compaction by rammers, earth compactor as per instructions of HPCL.

Murrum filling — Supplying & providing Murrum of MDD not less than 1.60 & not more than 20% fines & Plasticity index from 0-10 for tank pads from bottom of excavated pit up to anti-corrosive layer in layers of 150mm thickness and compacting by vibro-roller/ compactor with applicable application of water, testing wherever applicable including all labour, materials, tools including cutting trenches, supporting the sides suitably, compaction by tamping, rolling, etc all complete as per drawings, specifications and directions of HPCL EIC.

Sand Filling — Supplying and filling approved quality sand (Zone I / Zone II) conforming to IS:383 in sand pad foundation or other places in layers of 150 mm compacted thickness using a Plate Vibrator or in layers of 600 mm compacted thickness using a Vibro rammer and achieving atleast 85% Relative Density after compaction including watering, compacting, testing atleast two tests for each layer in each tank foundation for all lead, lift and depth complete as per drawing and specification and direction of the Engineer In-Charge. NOTE: 1. Rate to include cost of all labour, tools, tackles, equipment, hire charges, cost of sand, right of way, cess etc.

Tack Coat with Bitumen — Providing and laying 75mm thick anti- corrosive layer under steel storage tanks as follows: Tack coat with bitumen VG 10 @ 1 kg/sq.m followed by a 35 mm thick layer of 6mm & down aggregates mixed with VG 10 grade bitumen (8 to10% by volume) .This would be followed by Tack coat with bitumen VG 10 @ 1 kg/sq.m and 40mm thick layer using sand mixed with VG 10 grade bitumen (8 to10% by volume) including supply of all materials, transportation, mixing, laying, tamping, rolling, finishing including all labour, etc complete as per drawings, specifications and directions of HPCL Engineer-in-Charge.

Plain Cement Concrete-1:4:8 — Providing and laying Plain Cement Concrete of nominal volumetric mix 1:4:8 (1 Cement; 4 Sand: 8 Crushed stone aggregates) with 40mm and down size graded aggregates below ring walls/beams, toe beam and for bed block & any other work as per HPCL requirement including any required shuttering, tamping, ramming, curing, etc all complete as per Specifications & Drawings and instructions of HPCL Engineer-in-Charge.

Reinforced Cement Concrete- — Providing and laying Reinforced Cement Concrete of design mix M-30 (Severe exposure) with 20mm and down size graded crushed stone aggregates for RCC apron & pipeline sleeper/any other work instructed by HPCL; supply of all required materials like cement, stone aggregates, water, sand, labour, equipments; carrying out vibrating, tamping, finishing, curing, testing all complete as per specifications including any shuttering required to hold the RCC in place all complete as per specifications and in all shapes and dimensions as per drawings and instructions of HPCL Engineer-in-Charge. Quoted rates to exclude the cost of supplying and providing Reinforcement Steel. Ready Mix Concrete M-30 shall be accepted in which case Mix Design shall be for Severe exposure. . Cement content in the design mix shall be 320 kg/m3.

Impermeable Alkathene Sheet — Supplying and providing 125 micron thick impermeable Alkathene sheet free from cracks and bubbles and laid with an overlap of min. 300mm at all seams.