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Pump Calculation

This document contains sizing calculations for a sump pump needed for a proposed two-story house with a basement and swimming pool. It calculates the design flow rate as 2 liters per second based on drainage from the pool and basement. It then calculates the static head at 3.38 meters and total head of around 6 meters including friction in the piping system. Based on these calculations, the document recommends selecting a Nocchi submersible pump model Priox 300/9 M Aut with a 2 liter per second capacity and 6 meter operating head.

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7K views2 pages

Pump Calculation

This document contains sizing calculations for a sump pump needed for a proposed two-story house with a basement and swimming pool. It calculates the design flow rate as 2 liters per second based on drainage from the pool and basement. It then calculates the static head at 3.38 meters and total head of around 6 meters including friction in the piping system. Based on these calculations, the document recommends selecting a Nocchi submersible pump model Priox 300/9 M Aut with a 2 liter per second capacity and 6 meter operating head.

Uploaded by

api-3728508
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as XLS, PDF, TXT or read online on Scribd
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SIZING CALCULATIONS FOR SUMP PUMP AT SUMP PIT FOR PROPOSED ERECTION OF A

2 STOREY DETACHED DWELLING HOUSE WITH BASEMENT AND SWIMMING POOL ON LOT
1663T PARCEL B6A-5 MK 34 AT OCEAN DRIVE, SENTOSA COVE

CALCULATION OF DESIGN FLOW


Discharge Unit

Flow from reflective pool & rain water in basement = 2.0 lit/sec(estimated)

Design flow rate = 2.0 lit/sec

CALCULATION OF STATIC HEAD

Discharge level at open drain = 103.35


Sump pit level = 99.97

Static Head = 3.38

CALCULATION OF TOTAL HEAD

No. of dia. 50mm fittings Equivalent length (m)

Length of dia. 50mm pipe (approx) = 5.56


90 deg. Elbow 6 nos. (6 x 2.3) = 13.80
Gate valve 2 nos. (2 x 22) = 44.00
Check valve 2 nos. (2 x 11.5) = 23.00
Tee piece 1 no = 3.50

Total equivalent length of 50 dia. mm pipe 89.86

Flow Rate (lit/min) 50 100 150 200

Static Head (m) 3.38 3.38 3.38 3.38


Friction Head 50mm dia. 0.49 1.62 2.70 5.39

Total Head (m) 3.87 5.00 6.08 8.77

Pump selection

From the plot of system curve against pump performance curve:-


Pump selected : Nocchi submersible pump model Priox 300/9 M Aut

Capacity : 2.0 lit/sec


Operating Head : 6m

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