b-1 tender form - Maharashtra Industrial Development Corporation

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behind rounding of corners at junction of wall or in plastering of masonry cornices etc. shall not be
paid for.
2.9 Curing : Curing shall be started 24 hours after finishing the plaster. The plaster shall be kept wet
for a period of seven days. During this period, it shall be suitably protected from all damages at the
contractor’s expenses by such means as the Engineer-in-charge may approve. The dates on which
the plastering is done shall be legibly marked on the various sections plastered so that curing for the
specified period thereafter can be watched.
2.10 Precautions : Any cracks which appear in the surface and all portions which sound hollow when
tapped, or are found to be soft or otherwise defective shall be cut out in rectangular shape and
replastered as directed by Engineer-in-charge.
When ceiling plaster is done, it shall be finished to chamfered edge at an angle at its junction with a
suitable tool when plaster is being done. Similarly when the wall plaster is being done, it shall be kept
separate from the ceiling plaster by a thin straight groove not deeper than 6 mm drawn with any
suitable method while the plaster is green.
To prevent surface cracks appearing between junction of column/beams and walls 150 mm wide
chicken wire mesh should be fixed with U nails 150 mm c/c in one vertical plane should be carried out
in one go. For providing and fixing chicken wire mesh with U nails, payment shall be made separately
under relevant item.
2.11 Item to Include : The item includes providing all materials for plastering, including transportation,
royalty for material, all labour, tools and plants, machinery and equipments, staging, scaffolding,
bailing out water, testing, curing and construction as per above specifications etc. complete.
2.12 Mode of Measurement and Payment : The plaster area shall be measured in sqm as detailed
below and shall be paid at the contract rate per sqm.
Measurements :
1. Length and breadth shall be measured correct to a cm and its area shall be calculated in m2
correct to two places of decimal.
2. Thickness of the plaster shall be exclusive of the thickness of the key i.e. grooves, or open joints in
brickwork.
3. The measurement of wall plaster shall be taken between the walls or partitions (the dimensions
before the plaster shall be taken) for the length and from the top of the floor of skirting to the ceiling for
the height. Depth of covers or cornices if any shall be deducted.
4. The following shall be measured separately from wall plaster.
Plaster bands 30 cm wide and under
Cornice beading and architrave’s or architrave’s moulded wholly in plaster.
Circular work not exceeding 6 m in radius
5. Plaster over masonry pilasters will be measured and paid for as plaster only.
6. A coefficient of 1.63 shall be adopted for the measurement of one side plastering on honeycomb
work having 6 x 10cm opening.
7. Moulded cornices and coves
Length shall be measured at the centre of the girth.
Moulded cornices and curves shall be paid in m2 the area being arrived at by multiplying length by the
girth.
Flat or weathered top to cornices when exceeding 15 cm in width shall not be included in the girth but
measured with the general plaster work.
Cornices, which are curved in their length, shall be measured separately.
8. Exterior plastering at a height greater than 10 m from average ground level shall be measured
separately in each story height. Patch plastering (in repairs) shall be measured as plastering new
work, where the patch exceed 2.5 m2 extra payment being made for preparing old wall, such as
dismantling old plaster, raking out the joints and cleaning the surface. Where the patch does not
Contractor.
Executive Engineer(E&M).