Tender Notice No: . VRTD/09/2013. - Gujarat Electricity Board

ITEM NO. 21: Providing & laying C.C. (1: 2 : 4 )/M-15 or C.C. using 12mm to 20mm size
black trap machine crushed metal for all types of RCC structure like coping, lintels, slabs,
RCC parapet, Paradi, staircase, steps, landing slab, chhajas, shelves, footing, columns,
beams etc. including mixture machine, necessary shuttering, ramming watering and
finishing honey combed surface if any, scaffolding etc. completed for all floors.
The general specification of cement concrete shall be applicable. Item provides for all kinds of
RCC work for building, for building, for all floors i.e. all elevations as per drawings, item includes
shuttering work also.
Honey combed surface, if any, shall be finished with C.M. 1:2, However if it is felt by Engineerin-charge
that Honey combing is more and structure is required to be recast it shall be done by
contractor with dismantling of original concrete. Nothing extra shall be payable for dismantling as
well as recasting work.
Whenever surface if bulged or not found in line & level, contractor will have chip out, finish and
bring in line & level without any extra c
ITEM NO. 22 : Providing and laying c.c. (1:3:6) for foundation and plinth with brickbat or
gravel or picked up metal or hand broken stone, of size 20mm to 25 mm as coarse
aggregate, including mixing, watering, ramming, consolidation etc., complete as directed.
General specification for concrete work shall be applicable. Coarse aggregate to be used shall
be approved quality of well-burnt brickbats, gravel or metal. Proportion of ingredients shall 1:4:8
i.e. one part of cement 4 parts of sand & 8 parts of coarse aggregate.
Coarse and fine aggregate shall be clean, free from foreign materials. Brickbats shall be from
well-burnt bricks. No debris or used bricks with mortar shall be allowed as brickbats. Aggregates
shall be well graded of size specified. Where thickness of concrete is mote than 150 mm it shall
be laid in 2 layers. Each layer to be consolidated with rammers properly. Second layer shall be
laid only after first layer is completed and cleared for laying second layer.
Before placing concrete for base in trenches or below column footing etc., area shall be
cleared of all injurious and foreign materials, bottom shall be moisten with water so as not to
absorb water of concrete.
After laying of concrete, it shall be checked for top level to be provided and for correct
thickness.
Curing shall be done for minimum period of 8 days. If sufficient arrangements of curing is not
found satisfactory, Board may arrange for curing work at the cost of contractor.
Payment shall be made for cu. mtrs. of concrete laid as per details given in drawing or as
directed as site.
ITEM NO. 23 :Providing & laying M.S. reinforcement in position including cutting, bending,
hooking &binding the reinforcement with approved quality of binding wire etc. completed as per
design(Providing chairs &supports etc. will be paid for under the item)
(A) Plain bars:
Plain bars to be used shall confirm to grade Fe-415 to IS 1786. The specification specified above
shall be applicable. Rerolled bars shall not be used. Wherever specified in drawing or where
instructed plain bars shall be used.
(B) Tor steel:
The general specifications as specified above shall be applicable. Bars shall confirm to grade Fe-
415 and IS 1786.
Item No. 24. Providing and placing 40 mm thick and 300 mm to 450 mm wide PSC/RCC cover
(for clear span upto 1.2 meters) in proportion (1:1.5:3) or M. 200 with necessary reinforcement
or 10 mm , 4 Nos. of bars and 6 mm distribution bars at 150 mm c/c as per drawing and
design including finishing the all surfaces with cement plaster, curing by placing in water
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