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Nak (Villa-1) Duct Under Cut Calculation

This document contains calculations for required undercuts of doors for ductwork in a building. It lists 11 rooms with their exhaust air flow rates and dimensions of ductwork openings. It calculates the required undercut area and depth for each door to allow a maximum air velocity of 3m/s or 4m/s through the duct below the door. Undercuts between 7-30mm are required to meet these velocity criteria for proper air flow.

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Karthy Ganesan
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309 views2 pages

Nak (Villa-1) Duct Under Cut Calculation

This document contains calculations for required undercuts of doors for ductwork in a building. It lists 11 rooms with their exhaust air flow rates and dimensions of ductwork openings. It calculates the required undercut area and depth for each door to allow a maximum air velocity of 3m/s or 4m/s through the duct below the door. Undercuts between 7-30mm are required to meet these velocity criteria for proper air flow.

Uploaded by

Karthy Ganesan
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as XLSX, PDF, TXT or read online on Scribd
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NAK (VILLA-1) DUCT UNDER CUT CALCULATION

Exhaust Supply air Intake air Required Required Door Required Door
Door
Flow rate Velocity Undercut by Undercut by
S.No. Serving Room air Flow Flow rate through Length Area
(m/s) 3m/s velocity maintaing 20 pa (-)
rate (cfm) (cfm) (mm) (mm²)
DUC(cfm) (mm) (mm)

1 GF-MAJLIS (TOI.) 50 - 50 750 3 7869 10 9


2 GF-MBR-1(TOI.) 200 150 50 1200 3 7869 7 5
3 GF-MBR-2(TOI.) 150 100 50 900 3 7869 9 7
4 GF-DINNING (HW) 100 - 100 850 3 15738 19 15
5 GF-DINNING (TOI.) 50 - 50 900 3 7869 9 7
6 FF-BR-1 (TOI.) 200 150 50 820 3 7869 10 8
7 FF-BR-2 (TOI.) 200 150 50 780 3 7869 10 8
8 FF-BR-3 (TOI.) 150 100 50 820 3 7869 10 8
9 FF-BR-4 (TOI.) 150 100 50 820 3 7869 10 8
10 FF - PANTRY 150 100 50 850 3 7869 9 8
11 FF - TOILET 50 - 50 850 3 7869 9 8
Exhaust Door Required Required Door
Velocity
S.No. Serving Room Flow rate Length Area
(m/s)
(cfm) (mm) (mm²) Undercut (mm)

1 GF-MAJLIS (TOI.) 50 750 4 5902 8


2 GF-MBR-1(TOI.) 200 1200 4 23607 20
3 GF-MBR-2(TOI.) 150 900 4 17705 20
4 GF-DINNING (HW) 100 850 4 11804 14
5 GF-DINNING (TOI.) 50 900 4 5902 7
6 FF-BR-1 (TOI.) 200 820 4 23607 29
7 FF-BR-2 (TOI.) 200 780 4 23607 30
8 FF-BR-3 (TOI.) 150 820 4 17705 22
9 FF-BR-4 (TOI.) 150 820 4 17705 22
10 FF - PANTRY 150 850 4 17705 21
11 FF - TOILET 50 850 4 5902 7

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