MARKING GUIDELINE
NATIONAL CERTIFICATE
CARPENTRY AND ROOFING THEORY N2
14 NOVEMBER 2012
This marking guideline consists of 8 pages.
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MARKING GUIDELINE
-2CARPENTRY AND ROOFING THEORY N2
T270(E)(N14)T
QUESTION 1
1.1
1.2
1.1.1
Temporary structures
(1)
1.1.2
Vertical pegs
(1)
1.1.3
Horizontal members
(1)
1.1.4
Foundation
(1)
1.1.5
Walls
(1)
1.1.6
1 metre
(1)
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A benchmark should be permanent and easy to find.
It is essential that a locality sketch be available for each benchmark.
If possible, a benchmark must be shown in relation to other permanent
structures e.g. roads, etc.
Measurements should be taken from at least THREE defined objects.
(4)
[10]
QUESTION 2
2.1
(10)
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MARKING GUIDELINE
2.2




-3CARPENTRY AND ROOFING THEORY N2
T270(E)(N14)T
By means of hurricane clips
By using a combination of wire and nails
By using a combination of wire clips and nails
By using a combination of nails and hoop iron
(ANY TWO)
2.3
2.4



(2)
Nail the truss from both sides with 100 mm nails into the wall plate
Strap hoop iron firmly over the truss and nail securely
Ensure that the hoop iron is long enough to tie down both the wall plate
and the truss.
2.4.1
2.4.2
2.4.3
(3)
Rafter: 38 mm x 228 mm or 38 mm x 152 mm
Grade: 6 of 8
(2)
Tie beam: 38 mm x 228 mm
Grade: 6 of 8
(2)
Maximum spacing: 760 mm
(1)
[20]
QUESTION 3
3.1
3.1.1
Class A, Class B, Class C
3.1.2
A: Metal and/or fibrecement sheets
B: Concrete tiles, clay tiles and thatching
C: Metal roof tiles
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(3)
(ANY ONE)
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(3)
MARKING GUIDELINE
-4CARPENTRY AND ROOFING THEORY N2
T270(E)(N14)T
3.2
(9)
[15]
QUESTION 4
4.1
E
(1)
4.2
F
(1)
4.3
G
(1)
4.4
A
(1)
4.5
H
(1)
4.6
C
(1)
4.7
B
(1)
4.7
D
(1)
[8]
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MARKING GUIDELINE
-5CARPENTRY AND ROOFING THEORY N2
T270(E)(N14)T
QUESTION 5
5.1
5.2
5.3
(5)
[15]
QUESTION 6
[12]
SUB TOTAL:
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80
MARKING GUIDELINE
-6CARPENTRY AND ROOFING THEORY N2
T270(E)(N14)T
QUESTION 7
THIS QUESTION IS FOR CARPENTRY CANDIDATES ONLY
7.1
(6)
7.2
7.2.1
Wall piece/plate
(1)
7.2.2
Needle
(1)
7.2.3
Rider
(1)
7.2.4
Cleat
(1)
7.2.5
Top shore/raker
(1)
7.2.6
Middle shore/raker
(1)
7.2.7
Braces
(1)
7.2.8
Wedge
(1)
7.2.9
Bottom shore/raker
(1)
7.2.10
Back- or supporting shore/raker
(1)
7.2.11
Sole plate
(1)
7.2.12
Transverse timbers or grillage
(1)
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MARKING GUIDELINE
7.3
-7CARPENTRY AND ROOFING THEORY N2
T270(E)(N14)T
Formwork is a temporary mould to serve as a system of support into which
concrete and reinforcement/steel is cast to form a required shape and a
predetermined strength until it has set sufficiently.
(2)
[20]
QUESTION 8
THIS QUESTION IS FOR ROOFING CANDIDATES ONLY
8.1
(4)
8.2
(9)
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8.3
8.4
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
-8CARPENTRY AND ROOFING THEORY N2
T270(E)(N14)T
It is obtainable in long lengths
It can be applied temporarily
No extra glue necessary to fix the membrane
(3)
8.4.1
Slate cutter
(1)
8.4.2
Slate ripper
(1)
8.4.3
Slater’s hammer
(1)
8.4.4
Guillotine
(1)
[20]
TOTAL:
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100
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