Page 116 - CAPE Green Engineering Syllabus 2016.docx_Neat

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GREEN ENGINEERING
UNIT 1 - Paper 032

MARK SCHEME
SPECIMEN PAPER

Syllabus Mark Marks
Objective
Question Suggested Response Alloca KC AK PS
tion
ii. A flat roof is not
aerodynamic and
consequently not
conducive to passive
cooling of the facility
as a result more air
conditioning or
artificial air
circulation will be
required to circulate
fresh air in the
building.

iii. Resource consumption
A flat concrete roof
restricts the natural
flow of water and tends
to collect water which
might result in leakage.
This may have been the
justification for using
tar on the roof to seal
potential leakage space.
A slant roof would more
easily facilitate water
flow and reduces the risk
of water being absorbed
through the concrete. A
slant roof might also
eliminate the need for
applying tar to the
surface.

Energy consumption
iv. The glass windows at the

main lobby should be
utilized to allow natural
lighting in the building.
Blinds or window curtains
should be opened and
artificial light usage
discontinued. Usage of
artificial lights drives
up the cost for
electricity for the
facility. Also natural
lighting is better for
human eyes and long term
vision.