Bamanvada Taluka-Modasa District- Arvalli

Name Of Work:- Designing & Construction RCC ESR-50000 Litre Capacity with 12m height At Village Bamanvada Taluka-Modasa District- Arvalli

under the SCSP Programme

TALUKA:- Modasa, DIST:- Arvalli

Schedule -B RCC ESR

Item Description Qty. Unit Rate Amount

Designing structurally (and aesthetically) complying provisions of relevant Indian standards

and constructing RCC Elevated service Reservoir of the following capacity and height, using

data of S.B.C of proposed site, Seismic zone, Wind speed Zone. Including

(1) Container shape any suitable type (or as specified),

(2) Staging consisting of column brace trestle / shaft / combination column- brace trestle

and shaft as appropriate (or as specified) and

(3) Appropriate foundation system. This includes excavation in all types of soil

strata(including hard rock ), casting100 mm thick P.C.C. levelling course in M-10 , Refilling

the pit with proper soil and disposing of the surplus stuff at all required lead.

(4) This will also include cement plaster in CM 1:2 with approved water proofing compound

all over inside container (i.e.walls, base, top slab/dome bottom etc. all)

(5) All types of labour & material charges of lowering, laying, erecting / hoisting & joining of

pipe assembly of Inlet, Outlet, overflow, washout and bye pass arrangement as per

hydraulic design are including.

(6) Providing and fixing of any accessories(specified), CI Manhole frame and covers, water

level indicator, lightening conductor, GI Pipe railing around walk way, at roof level, at gallery

and around landing of inside shaft, Adequate cowl type ventilators or lantern type ventilator

with stainless steel jali.

(7) Scope of work includes constructing RCC spiral staircase with adequate tie

beams,staircase footing ,Rcc chambers for valves. ventilating shaft and ventilators as well as

door in shaft, SS grating to be provided to outlet pipe (inside container) for safety.

(8) including providing and applying three coats of cement paint/snowcem (as specified) to

the whole structure.

(9) It also includes satisfactory water tightness test as per relevant I.S. Code and painting

name of scheme & capacity on the tank as per direction of engineer in charge.

List of Indian Standards for design of ESR:

Note:The structural design of ESR shall be in accordance with provisions of

relevant Indian Standards

(1) I.S. 3370 part I to IV 1965 or latest revised

(1.1) IS 3370 part III & IV 1965 or latest revised.

(2) IS 456-2000 or latest revised

(3) IS 11682- 1985 or latest revised

(4) IS 1893-2002 part I to V or latest revised

(5) IS 13920-1993, or latest revised

(6) IS 875 part I to III,1987 or latest revised

(7) IS 11089- 1987 or latest revised

General specifications:

(1) The Min. concrete grade for RCC shall be M:30. Proportion of concrete ingredients shall

be as per Mix design using weigh batching .

(2) TMT( Fe 415)or higher grade reinforcing bars confirming to IS 1786/1139 or CRS /TMT

bars shall be used as per detailed specification.

(3) Incase of column –brace trestle type staging having more than 6 columns internal

horizontal bracing is obligatory. One bracing shall be at foundation level incase of Individual

(4) Min. size/ thickness of various components shall be provided as per design

criteria/specifications/IS Code ( or as per std. practice ) . Capacity of the ESR shall be

considered excluding free board.

(5) Minimum dimensions specified for various components in tender data /specifications

shall be provided.

(6) The Safe bearing capacity (SBC) /allowable pressure on soil shall be referred from

SBC test report or tender datasheet. If poor soil strata is met with or ground water table is

encountered, the SBC shall have to be re ascertained and the design shall be revised

(7) Maximum spacing between horizontal bracings shall be 5 m(storey height).

(8) The BB Masonry cabin with MS door shall be constructed when spiral staircase is

outside the staging.

(9) RCC Staircase/M.S. Staircase shall be provided and fixed for access to roof when height

of roof from G.L. is up to 10 m. For ESR having more than 10 m height proper RCC satircase

or suitable RCC spiral staircase shall be constructed. Railing should be provided through out

the staircase and around the top ring beam.

(10) For ESR-having staging height more than 15 m the spiral staircase shall be provided

inside the staging with effective tie beams in more than one direction.

(11) Water level indictor shall be provided and fixed float type /electronic (as specified ).

(12) The rate shall include providing and fixing pipes, specials, and valves required for inlet,

outlet , wash out, over flow and bye pass arrangement. The scope of work includes

constructing supporting RC pillars, erecting, laying ,fixing and joining pipes and specials

etc up to 5m length from face of staging (outer most column).

(13) DI/CI pipes & specials shall only be used .

(14) The rate shall include cost of dewatering during execution making all arrangement and

any dewatering technique.

(15) The structure shall be designed properly for uplift due to Ground water table specified

in data or GWT encountered during excavation.No extra payment shall be paid for the same.

(16) Effective curing shall be carried out up to required period as per specifications.

(17) Agency shall engage qualified (at least graduate)consulting engineer for designing the

structure and he/she shall visit the site for guidance of work at all level (i.e. below

foundation, up to GL for all lifts up to containers).

(18) 75 % part rate shall be payable for Concrete, Reinforcement and Plastering items of

container until satisfactory hydraulic testing for water tightness is performed or as per

tender condition. Till then the work shall be treated as incomplete.

(18) Above condition/general specifications sr.no 1 to 18 are part & parcel of tender

(contract) As above.Upto stagging height (L.S.L.) 12 from mt. from G.L.and S.B.C 10)

Capacity of E.S.Rs shall type container like cylindrical,conical,intze folded plates & its 1 No 1219501.83

0.50 lakh ltr. Capacity & 12 m height ESR at Bamanvad Village (Seismic Zone-III)

Executive Engineer

Public Health Works Division