SP : 27 w 1987

SUB-SECTION 48
WELL FOUNDATION
[ IS : 1200 ( Part 24 ) ]

1. SCOPE 4. STEINlNG AND CURB

1.1 This sub-section covers the method of measure- 4.1 Concrete/brick work/stone masonry in the
ment of well foundations. steining and concrete in top plug and curb shall
be described and measured in cubic metres. The
2. GENERAL formwork shall be included in the item.

2.1 Description of Items - The description of 4.2 Concrete in the bottom plug including sump,
if any, shall be measured on the basis of cement
each item shall, unless otherwise stated, be held
bags consumed.
to include where necessary, conveyance and deli-
very, handling, loading, unloading, storing, fabri- 4.3 The filling in the well shall be measured in
cation, hoisting, all Ianour for finishing to required cubic metres stating the type of filling.
shape and size, setting, fitting and fixing in position,
straight cutting and waste. 4.4 Measurement for the reinforcement including
mild steel bars, steel links, binders and steel plates
2.2 Measurements - All work shall be measured shall be made separately as specified in accordance
net in decimal system as fixed in its place as given with Section 10.
below:
4.5 Measurement for the steel cutting edge and
a) Linear dimensions shall be measured to the steel armouring ( if done ) shall be made separately,
nearest 0 01 m, as specified in accordance with Section 10.
b) Areas shall be worked out to the nearest 4.6 Cutting off the extra height of steining where
0.01 m2, and required shall be measured in cubic metres.
c) Cubic contents shall be worked to the 5. PNEUMATIC SINKING
nearest 0.01 m3.
5.1 Work executed under different working pressure
2.3 Removal of obstructions other than those range shall be measured separately.
requiring use of one-tonne-chisel for 24 hours during
sinking operations shall be measured separately on 5.2 Pneumatic sinking shall be measured in run-
the basis of quantum meruit. ning metres stating the size and shape. The depth
of sinking shall be measured from the level at
3. WELL SINKING which air is introduced to the level at which air is
stopped.
3.1 The item of well sinking shall include use of
kentiledge to the extent required for sinking and 5.3 The following shall be measured separately:
correcting the well in position.
4 Bringing of and removing the pneumatic
3.2 The provision of island, if required, shall be sinking plant from the site;
measured separately.
b) Use of this plant when fitted on well/when
3.3 The sinking shall be measured in running not fitted on well ( to be measured separa-
metres stating the shape and size. For this purpose, tely );
the measurement shall be taken from the level at 4 Fixing and removing of adopter and airlock;
which the cutting edge is pitched to the level at
which it rests finally.
4 Corbel slab; and
4 Keeping the well under pressure during
NOTE - The level of cutting edge shall be plane joining plugging, guniting, repairing, inspection,
the lower most portion of the well cur$ which cuts into the
soil during sinking or acts as a penetration face. testing but excluding sinking.

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SECTION 5 CONCRETE WORKS
As in the Original Standard, this Page is Intentionally Left Blank
 SP : 27 - I987

CONCRETE WORKS
[ IS : 1200 ( Part 2 ) ]
1. SCOPE j) CaX&;; structures not covered by (a) to (h)
.
1.1 This section covers the method of measurement
of concrete works in building and civil engineering 4.1.2 Units of Measurement - Unless otherwise
works. stated all concrete work shall be measured in cubic
metres.
2. GENERAL RULES 4.1.3 Formwork - Unless otherwise stated form-
work shall be measured separately in accordance
2.1 Description of Items - The description of with Section 8.
each item shall, unless otherwise stated, be held to
include where necessary, conveyance and delivery, 4.1.4 Finishes - Fair finishing of exposed sur-
handling, unloading, storing, fabrication, lowering, faces, of concrete including backing or roughening
hoisting, all labour for finishing to required shape surfaces of concrete shall be included in the des-
and size, setting, fitting and fixing in position, cription. Special finishes other than those obtained
straight cutting and waste, disposal of packing, through formwork shall be so described and
etc. measured separately in square metres.
2.2 Dimensions - Unless otherwise stated all 4.1.5 Reinforcement - Unless otherwise stated
work shall be measured net in decimal system as reinforcement shall be measured separately in
fixed in its place as given in 2.2.1 to 2.2.3. Any accordance with Section 10. Where concrete and
work done extra over the specified dimensions reinforcement are measured as a composite item
shall be ignored. they shall be fully described indicating that supply
of reinforcement is included in the item; in such
2.2.1 Dimensions shall be measured to nearest
cases items identical in other respects but varying
0.01 m except for the thickness of slab which shall
in reinforcement shall be measured separately.
be measured to nearest 0.005 m.
4.1.6 Special Concrete - Concrete processed in
2.2.2 Areas shall be worked out to nearest
special manner, such as cooled, heated, cellular,
0.01 m2.
expansive and he& resisting shall be fully described
2.2.3 Cubic contents shall be worked out to and measured separately.
nearest 0.01 m3.
4.1.7 All plain, rebated, grooved, locking and
3. LIME CONCRETE AND MUD CONCRETE tongued joints shall be included in the description.

3.1 Works of lime concrete and mud concrete 4.1.8 No deductions shall be made for the
shall be fully described and measured in cubic following:
metres. Ends of dissimilar materials, for example,
4
beams, posts, girders, rafters, purlins, trus-
4. CEMENT CONCRETE WORKS ses, corbels and steps up to 500 cm2 in
cross-section;
4.1 General
W Opening up to 0’1 rnz or as specified;
4.1.1 Concrete works shall be measured under 4 Volume occupied by reinforcement;
the following categories. Works in plain/reinfor-
ced/prestressed concrete shall each be measured 4 Volume occupied by pipes, conduits, shea-
thing, etc, not exceeding 100 cm2 each in
separately. Works in precast and cast in-situ con-
cross-sectional area or as specified;
crete shall be kept separate:
4 Small voids, such as the shaded portions in
a) Bridges; Fig. 1, when these do not exceed 40 cm2
b) Dams and spillways; each in cross-section;
Barrages and weirs; f) Moulds, drip moulding, chamfers, splays
Canal works; rounded or covered angles, beds, grooves
and rebates up to 10 cm in girth; and
Tunnels and shafts;
Harbour, docks and marine works; g) Stops, mitres, returns, rounded ends, junc-
tions, dishings, etc, in connection with linear
Special structures, such as power house, or super labours.
overhead water reservoir, chimneys and
shafts, towers, silos and similar other struc- NOTE - In calculating area of an opening, the thickness
tures; of any separate lintel or sill shall be included in the height.
No extra labour for forming such openings or voids shall
Buildings; and be measured.

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