BUILDING CONSTRUCTION
State
two
objectives of a site investigation.
(
b
)
State
two
common ways to carry out a ground exploration.
(
c
)
State
two
common
in-situ
field tests carried out during ground exploration and
briefly describe what information each provides for the engineer.
2.
(
a
)
Prepare an annotated sketch to show a typical vertical cross-section through
each
of the following foundation types:
• wide
strip
foundation;
• deep
strip
foundation.
(
b
)
Briefly explain how a contractor may obtain a supply of fresh concrete for the
foundations.
3.
A dwelling house with traditional concrete strip foundations is to be constructed on
a sloping site.
(
a
)
State
two
factors which will control the width of the foundation.
(
b
)
Figure Q3(
b
)
shows the stepped foundation (dotted) to a gable of the house.
Sketch and dimension the detail at
a
to illustrate compliance with current
standards.
Figure Q3(
b
)
(
c
)
State the minimum depth of the foundation lettered
X
in
Figure Q3(
b
)
.
X
a
4.
The external finish to a masonry cavity wall is to be a wet dash render finish.
List the materials which make up this render finish.
5.
(
a
)
State
three
functional requirements of a door in an external wall.
(
b
)
Name the component parts A to D of the 4 panel internal door shown in
Figure Q5(
b
)
below.
6.
(
a
)
Prepare sketches to illustrate the following terms relating to a stair:
(i) quarter
space
landing;
(ii) half
space
landing;
(iii)
taper treads (winders).
(
b
)
Figure Q6(
b
)
below illustrates a section through a private stair in a dwelling
house. Using the information given:
(i) calculate
the
rise,
going
and
pitch
of
the
stair;
(ii)
state whether or not the stair complies with current standards, giving a
reason for your answer.
Figure Q5(
b
)
Figure Q6(
b
)
[
t
urn over
a
B
c
D
3150
2850
section
B
a
ttempt any
t
W
o
questions in this
s
ection (total 60 marks)
7.
(
a
)
State
four
functional requirements of a floor and briefly explain
each
one.
(
b
)
Briefly describe how a contractor may reinforce an
in-situ
concrete ground
supported floor slab and explain why this reinforcement is necessary.
(
c
)
Worksheet Q7(
c
)
shows an incomplete detail drawing of a foundation and
in-situ
concrete ground supported floor slab to a dwelling house.
On the
Worksheet
, complete the drawing in proportion to show the following:
• support
for
the
concrete
slab;
• how
moisture
is
prevented
from
entering
the
building;
• finished
ground
level;
• insulation.
(
d
)
Ready mixed concrete is required for an
in-situ
ground floor. Curing is an
important process in the early life of concrete to minimise shrinkage, ensure
adequate surface strength and durability.
Briefly describe
two
ways in which successful curing may be achieved in the
floor slab.
(
e
)
Briefly describe, with the aid of an annotated sketch, how the following floor
finishes should be applied to the
in-situ
concrete ground floor slab:
• clay
ceramic
floor
tiles;
• sheet
vinyl.
(30)
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