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BS2 Tutorial 2 ventilation design
1. BACHELOR OF QUANTITY SURVEYING (Honours)
BUILDING | SERVICES | TWO (BLD60503)
August 2016 Semester
Tutorial 2 – Ventilation design
Q1 Using Equal velocity method, find the size of duct A & B and fan rating.
Selected air velocity throughout the system (duct A & B) is 5m/s
Given Q, the quantity of air is equally extracted through each grille.
Q = Room volume x air changes per hour
2. Q2 Using the velocity reduction method, find duct size A & B and fan rating.
Given selected air velocity in ductA = 5m/s and duct B = 3 m/s
Q3 Using equal friction method, find the size of ductA & B and fan rating.
Selected air velocity through duct A = 5 m/s
If the room is a recording studio, find the air changes per hour.