- You can do hydraulic calculations without buying the software.
- The calculations are run on the latest version of our software.
- You save money by not having to purchase and learn how to use new software.
- You save money by only calculating those projects that need to be calculated.
- You save time and money by running the hydraulic calculation using our software.
- The hydraulic calculation is emailed to you as a
**PDF document**.

- We must see your
**sketch**and the**data**before issuing a price quote. The sketch can be a**rough drawing**rendered by hand. Enough to help you complete the NODE numbering and for us to visualize the fire sprinkler system. The sketch may be transmitted by**fax**to**1-510-474-1438**. It may also be sent as a graphic file (**.jpg, .gif**) or a**PDF**document sent to**paypercalc@hydronicseng.com**. **Download the Excel Data Entry Form**. Click the**Enable Macros**button when asked and the form will be displayed in your Internet browser. Click the**tabs**at the bottom of the spreadsheet to switch between**Commercial**,**Residential**or**StandPipe**data entry templates.- Your completed Excel Data Entry Form will look like the one shown in
**Figure 2**. Click**File .. Save As**and save the file under a new name. Then email it to**paypercalc@hydronicseng.com**. If you do not like the Data Entry Form, we will accept a**hand-written**form, as long as it maintains the same format. - Eventually, your hydraulic calculations will be completed. You will be ready to submit them, along with your plans,
for review and approval. Here is a
**submittal checklist**to help you prepare for that great day. - If you complete and submit the
**Data Entry Form**yourself, we charge**$300**per hydraulic calculation. If we have to complete the form ourselves based on the information you provided, there is an additional charge of between**$100**to**$200**per hydraulic calculation. Upon accepting the price quote via phone or email, you will receive an**INVOICE**that must be signed and faxed back. Payment must be completed in full before any work begin. We accept all major credit cards as well as bank-to-bank money transfers and direct deposits. - Read the next
**6 sections**carefully and make sure that you can provide the**sketch**and the**data**required. If you feel that you**can**provide them, call us toll free at**1-800-845-9819**to tell us the good news. If you feel that you**cannot**, call us anyway to tell us the bad news. We will see what we can do to**help you**meet the data requirements.

Complete the information on **Static, Residual, Flow** obtained from
a hydrant flow test performed by your local water or fire department. **Density** is a design criterion expressed in
gpm/square foot and varies with the type of occupancy. In our example we use a density of 0.16 gpm per square foot.
**Area/Spr** is the area per sprinkler. Our example uses 130 square feet based on the distance of 10' between sprinklers
and 13' between branch lines. The Outside Hose of 150 gpm is the demand that would be placed on the system if the demand
from a fire hose was added outside the building.

Submit
** manufacturer specifications for fire sprinklers**
to determine coverage per sprinkler (square feet), flow per sprinkler (gpm) and the sprinkler K-Factor.

Submit
** manufacturer specifications for backflow preventer**
to determine the fixed pressure loss. For a given diameter, the fixed pressure loss increases as
the rate of flow increases. For a given rate of flow, the fixed pressure loss increases as the diameter decreases.

The Excel Data Entry Form shown in
** Figure 2**
is divided into a NODE section and a PIPE section. The NODE section occupies the left side of
** Figure 2**,
below the headings NODE, ELEV, KFACT and HOSE. The PIPE section occupies the right side, below the headings
PIPE, B-NOD, E-NOD, LENGTH, DIAM, FITTING, EQLN and KFACT. To the right of the PIPE section is the **Pipe Table**.
It is a listing of pipe diameters, equivalent lengths and C-Factors for 13 types of piping commonly used
in fire sprinkler systems. If you will be using pipe diameters and fitting lengths that are different from those shown
in the **Pipe Table** please specify the internal diameters, fitting equivalent lengths and Hazen-Williams C-Factors
in the empty spaces provided at the bottom of the **Pipe Table**.

A journey of a thousand miles now begins with our first step. We will
see how the data from the sketch in
** Figure 1**
made it's way into the NODE and PIPE sections of
** Figure 2**.
We start at the most remote sprinkler on the most remote branch line of the design area and assign it the number 101.
This is our first entry in the NODE section of the Excel Data Entry Form. It has an elevation of 15' and the K-factor
of 5.6 means that it is a flowing sprinkler. The next sprinkler on the branch line is assigned the number 102. This
the second entry in the NODE section and it too has an elevation of 15' and a K-factor
of 5.6 for a flowing sprinkler.

A 10' LENGTH of 1" DIAMeter Schedule-40 steel pipe connects
B-NOD(Beginning Node) 101 to E-NOD(Ending Node) 102. This is the entry for PIPE #1 in the PIPE section of the Excel Data
Entry Form shown in
** Figure 2**.
The value of 1.049" entered in the DIAM column is the internal diameter of 1" Schedule-40 steel pipe, obtained from the
**Pipe Table**.
There is no FITTING shown because the sprinkler is screwed directly into the ½" NPT outlet of the 1"x¼"x½ fitting
connecting the pipes. Congratulations, break out the champagne, we just finished our first line in the Excel Data Entry
Form.

NODE 102 is connected to NODE 3 by a 5' LENGTH of 1¼" Schedule-40 pipe.
The value of 1.380" entered for internal diameter is from the **Pipe Table**.
NODE 3 is the upper end of a 1½" riser nipple and NODE 16 is the lower end. A 1' LENGTH of 1.680" DIAMeter pipe connects
NODE 3 to 16. This is the data that appears in PIPE #13 of the Excel Data Entry Form.

When entering NODE numbers in the NODE section of the Data Entry Form make
sure that each NODE number is **unique**. This means that NODE numbers cannot be **repeated**. By the same token
do not repeat PIPE data entries in the PIPE section of the Data Entry Form. This means that if there is already a
PIPE number that describes a connection between NODE 101 and 102, we cannot have this repeated.
In ** Figure 1**, NODE 23 is the SOURCE NODE. The SOURCE NODE always appears
last in the list of NODE numbers in the NODE section of the Data Entry Sheet. Think of it as being the **anchor** NODE.
NODE numbers listed in the NODE section must appear as a B-NOD or E-NOD at least **ONCE** in the PIPE section. In the
case of a **tree system** this one, the number of PIPES is always **one less** than the number of NODES. Our tree
system has 23 NODES and 22 PIPES.

- The
**COVER sheet**presents a summary of the fire sprinkler hydraulic calculation. - The
**NODE sheet**displays the flow and pressure that occurs at each and every node in the fire sprinkler system. It presents a summary of system performance including available pressure, required pressure and the pressure cushion. - The
**PIPE sheet**is a detailed tabulation of the flow and pressure that occurs at each and every pipe in the fire sprinkler system. - The
**GRAPH**is a semi-logarithmic plot of two curves. The**supply**curve represents flow and pressure available from a water supply source. The**demand**curve plots flow and pressure required to satisfy the design requirements of the fire sprinkler system.