Page 560 - The City and Guilds Textbook: Plumbing Book 1 for the Level 3 Apprenticeship (9189), Level 2 Technical Certificate (8202) and Level 2 Diploma (6035)

The City & Guilds Textbook: Plumbing Book 1

8 What is the component marked ‘X’ in the image on the left?
X a Rainwater shoe

b Expansion joint
c Gulley
d Hopper
9 Which of the following is not a common material used in the manufacture
of rainwater systems?
a PVCu b MDPE
c Copper d Extruded aluminium
10 Which of the following British Standards gives specific information on the
intensity of rainfall in the UK?
a BS EN 12056–3:2000 b BS EN 806
c BS EN 1057 d BS 6565–4
11 A roof has a length of 12 m and a width of 7 m. If the pitch of the roof is
45° then what is the effective area of the roof?
12 How is expansion accommodated within PVCu guttering?
13 Calculate the amount of rainwater expected at any one time from a roof
with an effective area of 104 m in an area where the number of litres
2
discharged in a single two-minute rainstorm is 0.022 l/s/m .
2
14 Give at least three advantages to the use of extruded aluminium
rainwater systems.
15 What tools are required to install a PVCu gutter including running outlet
to a wooden fascia?

Practical activity

Practise your cutting and measuring by producing the gutter arrangement
shown in the image below. Ensure cuts are straight and smooth, and
brackets are installed at the correct distance to allow for support of the
bend. This does not need to be fixed but if your training centre allows it
or you have the facility and time on-site, then try positioning and fixing
using suitable fixings. The short length shown will have very little fall but
if possible (and, again, if time permits) a 3 m length of gutter could be
installed, ensuring correct fall is provided.

150mm max 150mm max 150mm max

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