T.Y. B. Arch. EXAMINATION, 2018
BUILDING SERVICES—I
(BRIDGE 2008 PATTERN)
Time Three Hours Maximum Marks 100
N.B. Answers to the two sections should be written in separate
answer-books.
(ii Neat diagrams must be drawn wherever necessary.
(iii All qaestions are compulsory.
Figures to the right indicate full marks.
Section-I
1. Calculate the no. of exhaust fans required for a community kitchen,
measuring 8 m × 12 m × 4 m. Show the positions of the fans in
plan and section.
Assume the appropriate air cycles required for a kitchen.
You may choose fans from the following
Diameter of fan Air handling capacity
of fan in cu.m/hr
305 mm 1900
380 mm 4000
457 mm 6800
610 mm 7900
P.T.O.
[5357]-303 2
Or
Explain with neat sketches, stack effect, wind towers and cross
ventilation.
2. Explain with neat sketches the working of a Window type air-conditioner.

Or
Explain with neat sketches the various methods of mechanical ventilation.
3. Write short notes on any four of the following
Types of fans used in mechanical ventilation
Stack effect
Compressor
Natural ventilation
Conditions of human thermal comfort
Split AC Unit.
Section-II
4. State Sabine's formula and explain the importance of the time of
reverberation in achieving good hearing conditions in an enclosed
space.
Or
Explain with neat sketches the principles of auditorium acoustics.
[5357]-303 3 P.T.O.
5. Write short notes on any five of the following
Masking Effect of Sound
Smoke Detector
Fire hydrants
Defects of Sound
Types of sprinklers
Acoustical Material
Fire extinguishers
Methods of cutting off Air Borne Noise.