CLIENT: MOHAMMAD ABDULKARIM MUHAMMAD JULFAR
PROJECT : COMM./ RESIDENTIAL BUILDING
LEAD CONSULTANT : ALHASHEMI PLANNERS, ARCHITECTS, ENGINEERS
MEP CONSULTANT : GREEN CONCEPT ENGINEERING CONSULTANTS
MEP CONTRACTOR: VOLTFLOW ELECTROMECHANICAL LLC
SUBJECT: EXTERNAL STATIC PRESSURE CALCULATION
FAHU-1
Volt Flow Electromechanical LLC Date 18.02.2018
External Static Pressure Calculation
Project MESC Unit No FAHU - 1
Total Pressure
Length of Total Length Total Pressure
Duct Size in Length Flow Qty. of Straight Loss
Sr no. Section Fittings Fittings of Fittings Loss
inches ft. CFM Fittings ft. ft
Length inc. WG /
inch WG
ft. 100 ft.
Elbow 3 22 66
1 A-B 950 x 950 40 13,590 106 0.058 0.061
2 B-C 950 x 900 12 12,430 12 0.056 0.007
3 C-D 900 x 800 12 10,285 12 0.060 0.007
4 D-E 800 x 750 12 8,162 12 0.061 0.007
5 E-F 750 x 650 12 7,350 12 0.058 0.007
6 F-G 650 x 550 12 3,918 12 0.056 0.007
7 G-H 450 x 400 12 1,552 12 0.054 0.006
8 H-I 400 x 400 12 1,446 12 0.063 0.008
Elbow 1 7 7
9 I-J 700 x 250 4 1,446 11 0.059 0.006
Elbow 1 6 6
10 J-K 650 x 200 14 918 20 0.055 0.011
Elbow 1 6 6
11 K-L 550 x 200 54 918 60 0.059 0.035
12 L-M 550 x 150 14 507 14 0.059 0.008
Elbow 1 4 4
13 M-N 250 x 150 35 507 39 0.055 0.021
14 Sound Attenuator 0.500
15 Fresh Air Sand Trap Louver 0.500
11 Motorised Damper 0.100
12 Volume Control Damper - 2 Nos 0.200
13 Grille 0.100
Total 1.593
10 % Safety Factor 0.159
Total External Static Pressure , in WG 1.752
Total External Static Pressure , Pascal 438.086
Note:
- 90o std. radius elbows are considered
- Friction rate is calculated by using computer software programme, by Mc Quay Duct Sizer 6.4
CLIENT: MOHAMMAD ABDULKARIM MUHAMMAD JULFAR
PROJECT : COMM./ RESIDENTIAL BUILDING
LEAD CONSULTANT : ALHASHEMI PLANNERS, ARCHITECTS, ENGINEERS
MEP CONSULTANT : GREEN CONCEPT ENGINEERING CONSULTANTS
MEP CONTRACTOR: VOLTFLOW ELECTROMECHANICAL LLC
SUBJECT: EXTERNAL STATIC PRESSURE CALCULATION
FAHU-2
Volt Flow Electromechanical LLC Date 18.02.2018
External Static Pressure Calculation
Project MESC Unit No FAHU - 2
Total Pressure
Duct Size in Length Flow Qty. of Length of Total Length Total Pressure
Straight Loss
Sr no. Section Fittings Fittings of Fittings
Length inc. WG /
Loss
inches ft. CFM Fittings ft. ft inch WG
ft. 100 ft.
Elbow 3 19 57
1 A-B 900 x 850 50 11,066 107 0.059 0.063
2 B-C 800 x 800 12 8,828 12 0.060 0.007
3 C-D 750 x 700 12 6,685 12 0.058 0.007
4 D-E 650 x 600 12 4,540 12 0.059 0.007
5 E-F 550 x 450 12 2,397 12 0.055 0.007
6 F-G 800 x 250 6 2,398 6 0.115 0.007
Elbow 1 6 6
7 G-H 800 x 200 14 1,468 20 0.086 0.017
8 H-I 650 x 200 12 1,172 12 0.087 0.010
9 I-J 500 x 200 19 792 19 0.074 0.014
10 J-K 450 x 150 7 432 7 0.044 0.003
11 K-L 450 x 150 12 402 12 0.050 0.006
Elbow 1 3 3
11 L-M 150 x 150 28 64 31 0.025 0.008
14 Sound Attenuator 0.500
15 Fresh Air Sand Trap Louver 0.500
11 Motorised Damper 0.100
12 Volume Control Damper - 2 Nos 0.200
13 Grille 0.100
Total 1.556
10 % Safety Factor 0.156
Total External Static Pressure , in WG 1.712
Total External Static Pressure , Pascal 428.016
Note:
- 90o std. radius elbows are considered
- Friction rate is calculated by using computer software programme, by Mc Quay Duct Sizer 6.4
