1. Lecture 7 - Concrete
Objectives:-
1.To learn the units of measurement of concrete.
2.To relate the measurement as per clauses in
SMM2
3.To determine the classification of sizes for
slabs.
Outcomes:-
1.Able to differentiate the different clauses used
for the measurement of concrete
2.Able to write down the dimensions based on
the drawings.

2. Unit of measurement
• Measurement to be in
m3 or volume for all
structural members.

3. Clause F3.3 Isolated foundation base
• 1. To identify the
footing.
• 2. To include the
number.
Foundation - Footing

4. Clause F3.4 - Casings
• 1. Concrete support to
hand railing.
• 2. Measurement to
include the number of
support.
Steel railing
Concrete support

5. Clause F3.5 ground beams
• Concrete for ground
beams must not be
group with other
members like stump
and footings.
Ground beams
Stump
Footing

6. Clause F.3.6 Casing to steel ground beam
• Concrete casing is
needed to provide
protection to the steel
beam.
Concrete casing
Steel beam

7. Clause F2,F3. 8 & 9 Beds and suspended
slabs
• Measurement of slab
shall be under the
following categories:-
• A. Not exceeding 100mm.
• B. 100mm to 150mm
• C. 150mm to 300mm.
• D. Exceeding 300mmGround floor slab
1st
. Floor slab

8. Clause F.3.10 Troughed slab
• Slab of this shape
must be separated
and named as
troughed slab.
• To state overall
thickness.
A (overall thickness)
b
Coffered / troughed slab

9. Clause F.3.11 Upstand, kerbs
• These are smaller
structures whereby
the construction
would be slower and
more laborious.
Upstand
Kerb
Coping
Low wall

10. Clause F.3.12 Walls
• Reinforced concrete
wall is a structure to
prevent landslide or
movement of earth to
a lower level.
Retaining wall
Kicker
Hill

11. Clause F.3.12 Fascia and fins.
• These are beams are
very thin in thickness
and mainly served as
decorative surface
and sun shading.
• The construction of
these beams is very
difficult due to the
thinness.
Fascia beam
Fins

12. Clause F.3.16 steps and staircases
• These structure is very
difficult to construct
due to the different
sizes and drops.
Staircase
Steps

13. Clause F.3.17 Tops and cheeks of
dormers
• As the construction of
the small structure is
in a very high level
and involved very
delicate job the cost
could be high.
Dormers

14. Clause F.3.19 Machine bases
• The construction of
plinth shall mean the
support of a machine
like a water pump or
the water tank
support.
Water tank
Concrete plinth
Concrete slab

15. Clause F.3.20 Filling to pockets.
• 1. Volume of void
exceeding 0.10m3 to
be measured in m3
and to state how
many number.
• 2. Volume less than
0.10m3 to be
enumerated
irrespective of sizes.
R.C. slab with pockets of voids to be filled.

16. Clause F.4.2 Joints.
• Casting of large panel
slabs shall be in panels
and the joints could
include waterstop,
expansion or
compression joints
and be measured in
meters.
R.C .slab cast in panels
A B
C D

17. Airport runway
• Construction of
runway for planes
must be strong and
durable.

18. The concrete slab must be flexible to withstand the
contraction and expansion.
Expansion joints

19. Clause F.7.3 Guniting
• It is a slope improvement
system to prevent the
slope from failing.
• The concrete is splayed
to the surface of the
slope and the
measurement is in m2
stating the thickness.