HORROCKS ===--- IMI ='----­

E N G I N r:: .- R s

2162 West Grove Parkway, Ste 400 Pleasant Grove, Utah 84062

801-763-5100www.horrocks.com

To:

From:

Date: Memorandum

Subject:

Ken Engstrom

Jason Judd, P.E.

March 13, 2017

Fire Flow Tests for Canyon Creek

As requested we were able to perform fire flow testing at locations indicated on the Figure 1. The testing consists of placing a pressure gauge at the first hydrant and a diffuser with a pitot tube at the second hydrant. The second hydrant is then manually opened and once the flow has regulated the pressure is measured. Meanwhile the residual pressure is being monitored at the first hydrant.

The data is then analyzed and the fire flows are calculated, the results are as follows:

Test 1· Kirby Lane

The results from test 1 are shown below. We measured a residual pressure of 95 psi and calculated a flow of 1,424 gpm.

Pressure (psi) Flow (gpm)

Static 105 Os 400

Presure

Residual 95 OF(GPM) 1,424

Pressure

Low 20 OR(GPM) 4,522

Test 2· 1206 Canyon Creek

Os = Static Pressure

OF(GPM) = Total Flow Measured (one hydrant open)

OR (GPM) = Flow Calculated to 20 psi

The results from test 2 are show below. We measured a residual pressure of 98 psi and calculated a flow of 1,547 gpm.

Pressure (psi)

Static 105

Presure

Residual 98

Pressure

Low 20

Flow (gpm)

Os 400

OF(GPM) 1,547

OR(GPM) 5,957

Os = Static Pressure

OF(GPM) = Total Flow Measured (one hydrant open)

OR (GPM) = Flow Calculated to 20 psi

1

Hydrant 1

Hydrant 2

Hydrant 1

Hydrant 2

Water Flow Test Summary Sheet

Single Valve on Hydrant Open

Conducted By: Jason Judd, P.E. / Drew Geiger

Location: 1206 Canyon Creek

Date: 3-10-17

c (Hydrant Outlet Coeff.)

d (Diameter of Outlet, inches)

p (Pitot Tube Reading, psi)

0.9

2.5

85

Pressure (psi) Flow (gpm)

Static 105 Os 400

Presure

Residual 98 QF (GPM) 1547

Pressure

Low 20 QR (GPM) 5,957

Notes: Only one valve was opened for this test

Fire Flow

120

100

::=,

80 1h

Cl) 60

1h

40

20

0

0 1,000 2,000 3,000 4,000

Flow (GPM)

Qs = Static Pressure

QF (GPM) = Total Flow Measur ed (one hydrant open)

QR (GPM) = Flow Calculated to 20 psi

5,000 6,000 7,000

Water Flow Test Summary Sheet Single

Valve on Hydrant Open

Conducted By: Jason Judd, P.E. / Drew Geiger

Location: Kirby Lane

Date: 3-10-17

c (Hydrant Outlet Coeff.)

d (Diameter of Outlet, inches)

p (Pitot Tube Reading, psi)

0.9

2.5

72

Pressure (psi) Flow (gpm)

Static 105 Os 400 Qs = Static Pressure

Presure

Residual 95 QF (GPM) 1424

QF (GPM) = Total Flow Measur Pressure hydrant open)

ed (one

Low 20 QR (GPM) 4,522 QR (GPM) = Flow Calculated to 20 psi

Notes: Only one valve was opened for this test

120

100 •

·;; 80

60

40

20

0

0 1,000

•

Fire Flow

2,000 3,000

Flow (GPM)

I

�

4,000 5,000