7 "w.c., starting pressure The units of pressure must be a direct scale. Higher numbers mean higher absolute pressure.

6.7 "w.c., end pressure, minimum satisfactory end pressure "w.c. units of pressure, short label

0.3 pressure loss, "w.c., maximum satisfactory pressure loss 0.03612729 multiplier, 1"w.c.= how many psi

100 feet of pipe 14.696 psia at 0 "w.c.

100 scfh flow flow units must be convertible to mass/time scfh units of flow, short label if you must use other units

generally 1 scfh = 1035 btu/hr 1.17891E-05 multiplier, 1 scfh= how many lbs/sec put a units converter here

If you know acfh, pressure and temperature at one location in the flow, 2300 Laminar flow below this Reynolds number (usually 2300)

that can be converted to scfh, which is convertible to mass/time. 10000 Turbulent flow above this Reynolds number (usually 10000)

acfh 0 thickness of coating or scale on pipe wall, inches, (usually 0 )

"w.c. at acfh (0"w.c. is atmosphere) 0.00015 roughness, pipe wall, ft (some typical values given in READ ME)

'F temperature (68'F is standard)

0 scfh

0.901116233 NFPA 54 calculation, dia, inches, see NFPA 54 tab 10 ft, length in each of 10 segments, headings below indicate the end position of each segment

Each segment is calculated based on the result of the previous segment, using recalculated fluid properties and velocity.

"w.c. "w.c. "w.c. Pressure loss in each segment, "w.c.: "w.c.

Pipe NPS

* Pipe 2nd

identifier

end

pressure

pressure

loss

pressure

loss per

100 ft *

pipe error

check 10 ft 20 ft 30 ft 40 ft 50 ft 60 ft 70 ft 80 ft 90 ft 100 ft

Turbulent

transitional

Laminar

end

pressure

1/2 40 too low 1.30 1.304973 . 0.130312 0.130352848 0.130394 0.130435 0.130476 0.130518 0.130559 0.1306 0.130641899 0.130683 tttttttttt 5.695027

3/4 40 6.70 0.30 0.299307 . 0.029921 0.029923107 0.029925 0.029927 0.02993 0.029932 0.029934 0.029936 0.029938298 0.02994 tttttttttt 6.700693

1 40 6.92 0.08 0.0849925 . 0.008498 0.008498638 0.008499 0.008499 0.008499 0.008499 0.0085 0.0085 0.008499863 0.0085 tttttttttt 6.915007

1 1/4 40 6.97 0.03 0.0277219 . 0.002772 0.002772123 0.002772 0.002772 0.002772 0.002772 0.002772 0.002772 0.002772254 0.002772 LLLLLLLLLL 6.972278

1 1/2 40 6.99 0.01 0.0149634 . 0.001496 0.001496318 0.001496 0.001496 0.001496 0.001496 0.001496 0.001496 0.001496356 0.001496 LLLLLLLLLL 6.985037

2 40 6.99 0.01 0.0055077 . 0.000551 0.000550763 0.000551 0.000551 0.000551 0.000551 0.000551 0.000551 0.000550768 0.000551 LLLLLLLLLL 6.994492

2 1/2 40 7.00 0.00 0.0027055 . 0.000271 0.000270546 0.000271 0.000271 0.000271 0.000271 0.000271 0.000271 0.000270548 0.000271 LLLLLLLLLL 6.997295

3 40 7.00 0.00 0.0011348 . 0.000113 0.000113476 0.000113 0.000113 0.000113 0.000113 0.000113 0.000113 0.000113476 0.000113 LLLLLLLLLL 6.998865

4 40 7.00 0.00 0.0003827 . 3.83E-05 3.82676E-05 3.83E-05 3.83E-05 3.83E-05 3.83E-05 3.83E-05 3.83E-05 3.82676E-05 3.83E-05 LLLLLLLLLL 6.999617

5 40 7.00 0.00 0.000155 . 1.55E-05 1.5495E-05 1.55E-05 1.55E-05 1.55E-05 1.55E-05 1.55E-05 1.55E-05 1.5495E-05 1.55E-05 LLLLLLLLLL 6.999845

6 40 7.00 0.00 7.43E-05 . 7.43E-06 7.43024E-06 7.43E-06 7.43E-06 7.43E-06 7.43E-06 7.43E-06 7.43E-06 7.43024E-06 7.43E-06 LLLLLLLLLL 6.999926

8 40 7.00 0.00 2.478E-05 . 2.48E-06 2.47797E-06 2.48E-06 2.48E-06 2.48E-06 2.48E-06 2.48E-06 2.48E-06 2.47797E-06 2.48E-06 LLLLLLLLLL 6.999975

10 40 7.00 0.00 9.974E-06 . 9.97E-07 9.97367E-07 9.97E-07 9.97E-07 9.97E-07 9.97E-07 9.97E-07 9.97E-07 9.97367E-07 9.97E-07 LLLLLLLLLL 6.99999

12 40 7.00 0.00 4.95E-06 . 4.95E-07 4.94994E-07 4.95E-07 4.95E-07 4.95E-07 4.95E-07 4.95E-07 4.95E-07 4.94994E-07 4.95E-07 LLLLLLLLLL 6.999995

14 40 7.00 0.00 3.389E-06 . 3.39E-07 3.38892E-07 3.39E-07 3.39E-07 3.39E-07 3.39E-07 3.39E-07 3.39E-07 3.38892E-07 3.39E-07 LLLLLLLLLL 6.999997

16 40 7.00 0.00 1.986E-06 . 1.99E-07 1.98592E-07 1.99E-07 1.99E-07 1.99E-07 1.99E-07 1.99E-07 1.99E-07 1.98592E-07 1.99E-07 LLLLLLLLLL 6.999998

roughness of pipe material

(not relative roughness which = roughness / Diameter (ft)

Here are some values I've seen. I do not know how accurate these are.

roughness

value in feet

0.000005

0.000005

0.000005

0.000005

0.000005

1.66E-05

0.00015

0.00015

0.00015

0.00015

0.0003

0.0004

0.0005

0.0006

0.0006

0.000833

0.00085

0.001

0.003

0.003

0.0085

0.01

0.03

0.03

This spreadsheet was written in Excel 2007. Earlier versions or generic versions may not work correctly.

All cells are unprotected. Be very careful to not change anything. For most users, use only the cells that

are shaded. Do not use any other cells. Advanced users can change anything.

This spreadsheet is for natural gas, as 100% Methane. This is approximately correct for processed natural

gas used by consumers and utilities, although it is not exactly correct. This spreadsheet is not for natural

gas from the well before processing.

This spreadsheet is not intended to substitute for Building Code methods. Use Building Code methods

where required! The NFPA 54 result and tab are provided for your review.

Comments about Accuracy -

The calculations are based on the Darcy-Weisbach equation and friction factor as adapted from the

ASHRAE 2009 Fundamentals Handbook. Accuracy is limited by how well these methods actually model

real fluid flow. Dividing the pipe into 10 intervals for recalculation of properties and velocity is a good

simulation, but of course dividing the pipe into even more intervals would increase the accuracy.

The spreadsheet has been tested against the results of commonly published results. You may wish to do

the same to assure yourself of accuracy and reasonableness.

Frequently you do not know the condition of the inside wall of the pipe, whether there is any film, scale

or corrosion on it, or what is the true roughness. These limit the accuracy of any calculation. Commonly

published results assume new, clean pipe. The spreadsheet lets you add a thickness onto the inside pipe

wall, if you want to see how that affects the results.

Accuracy also depends on whether the Fluid Properties in the spreadsheet truly represent your fluid.

Standard data may be for a temperature different than your fluid temperature. The density and viscosity

of your fluid could be significantly different. For air and gases, standard data may be for dry and pure air

or gases, but your air or gases may not be dry or pure. You can put in your own fluid property data, if you

want.

Where flow is in the transitional condition between laminar and turbulent, the friction factor is between

limits but otherwise not known, so the results are less accurate. Fortunately, most flow problems are not

in this condition. In transitional flow, this program assigns a friction factor on a straight line between the

known high limit of laminar and known low limit of turbulent. You do have the option of changing the

Reynolds numbers defining where those limits occur. One of the columns in the results indicates whether

the flows are Laminar, transitional or Turbulent.

If you change the formulas or data values to become more accurate, consider these potential problems:

(1) Your results may be different than commonly published results. Other reviewers of your results may

then question why your results do not match commonly published results. (2) Your interfacing

equipment such as fans or pumps may be tested or rated at standardized conditions. So you will have to

consider how your results at non-standard conditions should be applied to selecting your fan or pump.

Pressure Loss per 100 feet: This result is commonly used in engineering to predict pressure loss in any

length of pipe. It is included here because it is a commonly expected result. Be aware that in

compressible flow, the pressure loss rate is changing all the way down the length of the pipe. So a

pressure loss rate learned from a particular length of pipe will not accurately predict the pressure loss in

any other length of pipe.

An advantage of this spreadsheet is that if you are familiar with applying the Darcy equation and friction

factor and are familiar with Excel, you can examine the calculations, to satisfy yourself that the results

are reliable.

Bugs / Limitations

In any one display of the Home Page, there is only a single place to input thickness of coating or scale,

and pipe roughness. This keeps the input simple. Unfortunately if you want coating/scale/roughness

different values for different pipes, you cannot get them on the same display. This is a problem if some of

your pipes are steel and some are copper. You will have to look at the whole display with one set of

coating/scale/roughness values, and then look at the whole display with a different set of

coating/scale/roughness values. I apologize for this inconvenience.

11/23/13 S.M. version 02

roughness of pipe material

(not relative roughness which = roughness / Diameter (ft)

Here are some values I've seen. I do not know how accurate these are.

type of pipe (new)

aluminum

copper

drawn tubing

PVC

red brass

fiberglass

carbon steel

commercial steel

stainless steel

wrought iron

wood stave low value 1

asphalted cast iron

galvanized iron

wood stave high value 1

wood stave low value 2

cast iron uncoated

cast iron

concrete low value

riveted steel low value

wood stave high value 2

ductile iron

concrete high value

riveted steel high value

riveted steel high value

* notes are at bottom of this page.

Name the range of all numbers in the first four columns: Fluid_Table

Name the range of all numbers in the first column: Pressures

The data in the first column must be sequenced low to high.

this

column

required

for calcs *

this

column

required

for calcs *

this

column

required

for calcs *

this

column

required

for calcs *

all other

columns

available for

user *

all other

columns

available for

user *

all other

columns

available

for user *

all other

columns

available

for user *

all other

columns

available

for user *

psia

Density (v,

lbm/ft3)

Viscosity

(v,

lbm/ft*s)

Sound

Spd. (v,

ft/s) Phase

pressure,

inches w.c.

pressure,

psig

0.696 0.002006 7.29E-06 1449.7 vapor -387.518687 -14.000

1.196 0.003448 7.29E-06 1449.66 vapor -373.678734 -13.500

1.696 0.004889 7.29E-06 1449.62 vapor -359.838781 -13.000

2.196 0.006331 7.29E-06 1449.57 vapor -345.998828 -12.500

2.696 0.007773 7.29E-06 1449.53 vapor -332.158875 -12.000

3.196 0.009215 7.29E-06 1449.49 vapor -318.318922 -11.500

3.696 0.010658 7.29E-06 1449.44 vapor -304.478969 -11.000

4.196 0.012101 7.29E-06 1449.4 vapor -290.639016 -10.500

4.696 0.013543 7.29E-06 1449.36 vapor -276.799062 -10.000

5.196 0.014986 7.29E-06 1449.31 vapor -262.959109 -9.500

5.696 0.01643 7.29E-06 1449.27 vapor -249.119156 -9.000

6.196 0.017873 7.29E-06 1449.23 vapor -235.279203 -8.500

6.696 0.019317 7.29E-06 1449.18 vapor -221.43925 -8.000

7.196 0.02076 7.29E-06 1449.14 vapor -207.599297 -7.500

7.696 0.022204 7.29E-06 1449.1 vapor -193.759344 -7.000

8.196 0.023649 7.29E-06 1449.06 vapor -179.919391 -6.500

8.696 0.025093 7.29E-06 1449.01 vapor -166.079437 -6.000

9.196 0.026538 7.29E-06 1448.97 vapor -152.239484 -5.500

9.696 0.027982 7.30E-06 1448.93 vapor -138.399531 -5.000

10.196 0.029427 7.30E-06 1448.88 vapor -124.559578 -4.500

10.696 0.030873 7.30E-06 1448.84 vapor -110.719625 -4.000

11.196 0.032318 7.30E-06 1448.8 vapor -96.8796718 -3.500

11.696 0.033763 7.30E-06 1448.76 vapor -83.0397187 -3.000

12.196 0.035209 7.30E-06 1448.71 vapor -69.1997656 -2.500

12.696 0.036655 7.30E-06 1448.67 vapor -55.3598125 -2.000

13.196 0.038101 7.30E-06 1448.63 vapor -41.5198594 -1.500

13.696 0.039548 7.30E-06 1448.58 vapor -27.6799062 -1.000

13.796 0.039837 7.30E-06 1448.58 vapor -24.9119156 -0.900

13.896 0.040126 7.30E-06 1448.57 vapor -22.143925 -0.800

13.996 0.040416 7.30E-06 1448.56 vapor -19.3759344 -0.700

14.096 0.040705 7.30E-06 1448.55 vapor -16.6079437 -0.600

14.196 0.040994 7.30E-06 1448.54 vapor -13.8399531 -0.500

14.296 0.041283 7.30E-06 1448.53 vapor -11.0719625 -0.400

14.396 0.041573 7.30E-06 1448.52 vapor -8.30397187 -0.300

14.496 0.041862 7.30E-06 1448.52 vapor -5.53598125 -0.200

14.596 0.042152 7.30E-06 1448.51 vapor -2.76799062 -0.100

14.696 0.042441 7.30E-06 1448.5 vapor 0 0.000

14.796 0.04273 7.30E-06 1448.49 vapor 2.76799062 0.100

14.896 0.04302 7.30E-06 1448.48 vapor 5.53598125 0.200

14.996 0.043309 7.30E-06 1448.47 vapor 8.30397187 0.300

15.096 0.043598 7.30E-06 1448.46 vapor 11.0719625 0.400

15.196 0.043888 7.30E-06 1448.46 vapor 13.8399531 0.500

15.296 0.044177 7.30E-06 1448.45 vapor 16.6079437 0.600

15.396 0.044467 7.30E-06 1448.44 vapor 19.3759344 0.700

15.496 0.044756 7.30E-06 1448.43 vapor 22.143925 0.800

15.596 0.045045 7.30E-06 1448.42 vapor 24.9119156 0.900

15.696 0.045335 7.30E-06 1448.41 vapor 27.6799062 1.000

15.796 0.045624 7.30E-06 1448.4 vapor 30.4478969 1.100

15.896 0.045914 7.30E-06 1448.4 vapor 33.2158875 1.200

15.996 0.046203 7.30E-06 1448.39 vapor 35.9838781 1.300

16.096 0.046493 7.30E-06 1448.38 vapor 38.7518687 1.400

16.196 0.046782 7.30E-06 1448.37 vapor 41.5198594 1.500

16.296 0.047072 7.30E-06 1448.36 vapor 44.28785 1.600

16.396 0.047361 7.30E-06 1448.35 vapor 47.0558406 1.700

16.496 0.047651 7.30E-06 1448.34 vapor 49.8238312 1.800

16.596 0.04794 7.30E-06 1448.34 vapor 52.5918219 1.900

16.696 0.04823 7.30E-06 1448.33 vapor 55.3598125 2.000

16.946 0.048954 7.30E-06 1448.31 vapor 62.279789 2.250

17.196 0.049677 7.30E-06 1448.28 vapor 69.1997656 2.500

17.446 0.050401 7.30E-06 1448.26 vapor 76.1197422 2.750

17.696 0.051125 7.30E-06 1448.24 vapor 83.0397187 3.000

17.946 0.051849 7.30E-06 1448.22 vapor 89.9596953 3.250

18.196 0.052573 7.30E-06 1448.2 vapor 96.8796718 3.500

18.446 0.053298 7.30E-06 1448.18 vapor 103.799648 3.750

18.696 0.054022 7.30E-06 1448.16 vapor 110.719625 4.000

18.946 0.054746 7.30E-06 1448.14 vapor 117.639602 4.250

19.196 0.05547 7.30E-06 1448.11 vapor 124.559578 4.500

19.446 0.056195 7.30E-06 1448.09 vapor 131.479555 4.750

19.696 0.056919 7.30E-06 1448.07 vapor 138.399531 5.000

19.946 0.057643 7.30E-06 1448.05 vapor 145.319508 5.250

20.196 0.058368 7.30E-06 1448.03 vapor 152.239484 5.500

20.446 0.059092 7.30E-06 1448.01 vapor 159.159461 5.750

20.696 0.059817 7.30E-06 1447.99 vapor 166.079437 6.000

20.946 0.060541 7.30E-06 1447.96 vapor 172.999414 6.250

21.196 0.061266 7.30E-06 1447.94 vapor 179.919391 6.500

21.446 0.061991 7.30E-06 1447.92 vapor 186.839367 6.750

21.696 0.062716 7.30E-06 1447.9 vapor 193.759344 7.000

21.946 0.06344 7.30E-06 1447.88 vapor 200.67932 7.250

22.196 0.064165 7.30E-06 1447.86 vapor 207.599297 7.500

22.446 0.06489 7.30E-06 1447.84 vapor 214.519273 7.750

22.696 0.065615 7.30E-06 1447.82 vapor 221.43925 8.000

22.946 0.06634 7.30E-06 1447.79 vapor 228.359227 8.250

23.196 0.067065 7.30E-06 1447.77 vapor 235.279203 8.500

23.446 0.06779 7.30E-06 1447.75 vapor 242.19918 8.750

23.696 0.068515 7.30E-06 1447.73 vapor 249.119156 9.000

23.946 0.069241 7.30E-06 1447.71 vapor 256.039133 9.250

24.196 0.069966 7.30E-06 1447.69 vapor 262.959109 9.500

24.446 0.070691 7.30E-06 1447.67 vapor 269.879086 9.750

24.696 0.071416 7.30E-06 1447.65 vapor 276.799062 10.000

25.196 0.072867 7.30E-06 1447.6 vapor 290.639016 10.500

25.696 0.074318 7.30E-06 1447.56 vapor 304.478969 11.000

26.196 0.07577 7.30E-06 1447.52 vapor 318.318922 11.500

26.696 0.077221 7.31E-06 1447.48 vapor 332.158875 12.000

27.196 0.078673 7.31E-06 1447.43 vapor 345.998828 12.500

27.696 0.080124 7.31E-06 1447.39 vapor 359.838781 13.000

28.196 0.081576 7.31E-06 1447.35 vapor 373.678734 13.500

28.696 0.083029 7.31E-06 1447.31 vapor 387.518687 14.000

29.196 0.084481 7.31E-06 1447.26 vapor 401.358641 14.500

29.696 0.085934 7.31E-06 1447.22 vapor 415.198594 15.000

30.196 0.087386 7.31E-06 1447.18 vapor 429.038547 15.500

30.696 0.088839 7.31E-06 1447.14 vapor 442.8785 16.000

31.196 0.090293 7.31E-06 1447.09 vapor 456.718453 16.500

31.696 0.091746 7.31E-06 1447.05 vapor 470.558406 17.000

32.196 0.0932 7.31E-06 1447.01 vapor 484.398359 17.500

32.696 0.094653 7.31E-06 1446.97 vapor 498.238312 18.000

33.196 0.096107 7.31E-06 1446.92 vapor 512.078265 18.500

33.696 0.097562 7.31E-06 1446.88 vapor 525.918219 19.000

34.196 0.099016 7.31E-06 1446.84 vapor 539.758172 19.500

34.696 0.10047 7.31E-06 1446.8 vapor 553.598125 20.000

35.196 0.101925 7.31E-06 1446.75 vapor 567.438078 20.500

35.696 0.10338 7.31E-06 1446.71 vapor 581.278031 21.000

36.196 0.104835 7.31E-06 1446.67 vapor 595.117984 21.500

36.696 0.106291 7.31E-06 1446.63 vapor 608.957937 22.000

37.196 0.107746 7.31E-06 1446.59 vapor 622.79789 22.500

37.696 0.109202 7.31E-06 1446.54 vapor 636.637844 23.000

38.196 0.110658 7.31E-06 1446.5 vapor 650.477797 23.500

38.696 0.112114 7.31E-06 1446.46 vapor 664.31775 24.000

39.196 0.11357 7.31E-06 1446.42 vapor 678.157703 24.500

39.696 0.115027 7.31E-06 1446.38 vapor 691.997656 25.000

40.196 0.116484 7.31E-06 1446.33 vapor 705.837609 25.500

40.696 0.117941 7.31E-06 1446.29 vapor 719.677562 26.000

41.196 0.119398 7.31E-06 1446.25 vapor 733.517515 26.500

41.696 0.120855 7.31E-06 1446.21 vapor 747.357469 27.000

42.196 0.122313 7.31E-06 1446.16 vapor 761.197422 27.500

42.696 0.12377 7.31E-06 1446.12 vapor 775.037375 28.000

43.196 0.125228 7.32E-06 1446.08 vapor 788.877328 28.500

43.696 0.126686 7.32E-06 1446.04 vapor 802.717281 29.000

44.196 0.128145 7.32E-06 1446 vapor 816.557234 29.500

44.696 0.129603 7.32E-06 1445.95 vapor 830.397187 30.000

45.196 0.131062 7.32E-06 1445.91 vapor 844.23714 30.500

45.696 0.132521 7.32E-06 1445.87 vapor 858.077094 31.000

46.196 0.13398 7.32E-06 1445.83 vapor 871.917047 31.500

46.696 0.135439 7.32E-06 1445.79 vapor 885.757 32.000

47.196 0.136899 7.32E-06 1445.74 vapor 899.596953 32.500

47.696 0.138358 7.32E-06 1445.7 vapor 913.436906 33.000

48.196 0.139818 7.32E-06 1445.66 vapor 927.276859 33.500

48.696 0.141278 7.32E-06 1445.62 vapor 941.116812 34.000

49.196 0.142739 7.32E-06 1445.58 vapor 954.956765 34.500

49.696 0.144199 7.32E-06 1445.53 vapor 968.796718 35.000

50.196 0.14566 7.32E-06 1445.49 vapor 982.636672 35.500

50.696 0.147121 7.32E-06 1445.45 vapor 996.476625 36.000

51.196 0.148582 7.32E-06 1445.41 vapor 1010.31658 36.500

51.696 0.150043 7.32E-06 1445.37 vapor 1024.15653 37.000

52.196 0.151504 7.32E-06 1445.33 vapor 1037.99648 37.500

52.696 0.152966 7.32E-06 1445.28 vapor 1051.83644 38.000

53.196 0.154428 7.32E-06 1445.24 vapor 1065.67639 38.500

53.696 0.15589 7.32E-06 1445.2 vapor 1079.51634 39.000

54.196 0.157352 7.32E-06 1445.16 vapor 1093.3563 39.500

54.696 0.158815 7.32E-06 1445.12 vapor 1107.19625 40.000

55.196 0.160277 7.32E-06 1445.08 vapor 1121.0362 40.500

55.696 0.16174 7.32E-06 1445.03 vapor 1134.87616 41.000

56.196 0.163203 7.32E-06 1444.99 vapor 1148.71611 41.500

56.696 0.164666 7.32E-06 1444.95 vapor 1162.55606 42.000

57.196 0.16613 7.32E-06 1444.91 vapor 1176.39602 42.500

57.696 0.167594 7.32E-06 1444.87 vapor 1190.23597 43.000

58.196 0.169057 7.32E-06 1444.82 vapor 1204.07592 43.500

58.696 0.170521 7.32E-06 1444.78 vapor 1217.91587 44.000

59.196 0.171986 7.33E-06 1444.74 vapor 1231.75583 44.500

59.696 0.17345 7.33E-06 1444.7 vapor 1245.59578 45.000

60.196 0.174915 7.33E-06 1444.66 vapor 1259.43573 45.500

60.696 0.17638 7.33E-06 1444.62 vapor 1273.27569 46.000

61.196 0.177845 7.33E-06 1444.58 vapor 1287.11564 46.500

61.696 0.17931 7.33E-06 1444.53 vapor 1300.95559 47.000

62.196 0.180775 7.33E-06 1444.49 vapor 1314.79555 47.500

62.696 0.182241 7.33E-06 1444.45 vapor 1328.6355 48.000

63.196 0.183707 7.33E-06 1444.41 vapor 1342.47545 48.500

63.696 0.185173 7.33E-06 1444.37 vapor 1356.31541 49.000

64.196 0.186639 7.33E-06 1444.33 vapor 1370.15536 49.500

64.696 0.188105 7.33E-06 1444.28 vapor 1383.99531 50.000

69.696 0.20278 7.33E-06 1443.87 vapor 1522.39484 55.000

74.696 0.217475 7.34E-06 1443.46 vapor 1660.79437 60.000

79.696 0.23219 7.34E-06 1443.05 vapor 1799.19391 65.000

84.696 0.246925 7.34E-06 1442.64 vapor 1937.59344 70.000

89.696 0.26168 7.35E-06 1442.23 vapor 2075.99297 75.000

94.696 0.276455 7.35E-06 1441.82 vapor 2214.3925 80.000

99.696 0.29125 7.35E-06 1441.41 vapor 2352.79203 85.000

104.696 0.306065 7.36E-06 1441.01 vapor 2491.19156 90.000

109.696 0.3209 7.36E-06 1440.61 vapor 2629.59109 95.000

114.696 0.335755 7.36E-06 1440.21 vapor 2767.99062 100.000

119.696 0.35063 7.37E-06 1439.8 vapor 2906.39016 105.000

124.696 0.365525 7.37E-06 1439.41 vapor 3044.78969 110.000

129.696 0.380441 7.37E-06 1439.01 vapor 3183.18922 115.000

134.696 0.395377 7.38E-06 1438.61 vapor 3321.58875 120.000

139.696 0.410333 7.38E-06 1438.22 vapor 3459.98828 125.000

144.696 0.42531 7.38E-06 1437.83 vapor 3598.38781 130.000

149.696 0.440307 7.39E-06 1437.43 vapor 3736.78734 135.000

154.696 0.455324 7.39E-06 1437.04 vapor 3875.18687 140.000

159.696 0.470361 7.40E-06 1436.65 vapor 4013.58641 145.000

164.696 0.485419 7.40E-06 1436.27 vapor 4151.98594 150.000

169.696 0.500498 7.40E-06 1435.88 vapor 4290.38547 155.000

174.696 0.515597 7.41E-06 1435.5 vapor 4428.785 160.000

179.696 0.530716 7.41E-06 1435.12 vapor 4567.18453 165.000

184.696 0.545856 7.41E-06 1434.73 vapor 4705.58406 170.000

189.696 0.561017 7.42E-06 1434.35 vapor 4843.98359 175.000

194.696 0.576198 7.42E-06 1433.98 vapor 4982.38312 180.000

199.696 0.5914 7.43E-06 1433.6 vapor 5120.78265 185.000

204.696 0.606622 7.43E-06 1433.23 vapor 5259.18219 190.000

209.696 0.621865 7.43E-06 1432.85 vapor 5397.58172 195.000

214.696 0.637129 7.44E-06 1432.48 vapor 5535.98125 200.000

219.696 0.652413 7.44E-06 1432.11 vapor 5674.38078 205.000

224.696 0.667719 7.45E-06 1431.74 vapor 5812.78031 210.000

229.696 0.683045 7.45E-06 1431.37 vapor 5951.17984 215.000

234.696 0.698392 7.45E-06 1431.01 vapor 6089.57937 220.000

239.696 0.713759 7.46E-06 1430.65 vapor 6227.9789 225.000

244.696 0.729148 7.46E-06 1430.28 vapor 6366.37844 230.000

249.696 0.744557 7.47E-06 1429.92 vapor 6504.77797 235.000

254.696 0.759988 7.47E-06 1429.56 vapor 6643.1775 240.000

259.696 0.775439 7.48E-06 1429.21 vapor 6781.57703 245.000

264.696 0.790911 7.48E-06 1428.85 vapor 6919.97656 250.000

269.696 0.806405 7.48E-06 1428.5 vapor 7058.37609 255.000

274.696 0.821919 7.49E-06 1428.15 vapor 7196.77562 260.000

279.696 0.837454 7.49E-06 1427.8 vapor 7335.17515 265.000

284.696 0.853011 7.50E-06 1427.45 vapor 7473.57469 270.000

289.696 0.868588 7.50E-06 1427.1 vapor 7611.97422 275.000

294.696 0.884187 7.51E-06 1426.75 vapor 7750.37375 280.000

299.696 0.899807 7.51E-06 1426.41 vapor 7888.77328 285.000

304.696 0.915448 7.51E-06 1426.07 vapor 8027.17281 290.000

309.696 0.93111 7.52E-06 1425.73 vapor 8165.57234 295.000

314.696 0.946793 7.52E-06 1425.39 vapor 8303.97187 300.000

339.696 1.02553 7.55E-06 1423.73 vapor 8995.96953 325.000

364.696 1.1048 7.57E-06 1422.11 vapor 9687.96718 350.000

389.696 1.1846 7.59E-06 1420.54 vapor 10379.9648 375.000

414.696 1.26495 7.62E-06 1419.01 vapor 11071.9625 400.000

439.696 1.34584 7.65E-06 1417.54 vapor 11763.9602 425.000

464.696 1.42726 7.67E-06 1416.12 vapor 12455.9578 450.000

489.696 1.50924 7.70E-06 1414.75 vapor 13147.9555 475.000

514.696 1.59176 7.73E-06 1413.44 vapor 13839.9531 500.000

539.696 1.67483 7.75E-06 1412.18 vapor 14531.9508 525.000

564.696 1.75844 7.78E-06 1410.98 vapor 15223.9484 550.000

589.696 1.84261 7.81E-06 1409.84 vapor 15915.9461 575.000

614.696 1.92733 7.84E-06 1408.76 vapor 16607.9437 600.000

639.696 2.01259 7.87E-06 1407.74 vapor 17299.9414 625.000

664.696 2.09841 7.90E-06 1406.79 vapor 17991.9391 650.000

689.696 2.18477 7.94E-06 1405.9 vapor 18683.9367 675.000

689.696 2.18477 7.94E-06 1405.9 supercritical 18683.9367 675.000

689.696 2.18477 7.94E-06 1405.9 supercritical 18683.9367 675.000

714.696 2.27168 7.97E-06 1405.08 supercritical 19375.9344 700.000

739.696 2.35914 8.00E-06 1404.33 supercritical 20067.932 725.000

764.696 2.44714 8.04E-06 1403.65 supercritical 20759.9297 750.000

789.696 2.53568 8.07E-06 1403.05 supercritical 21451.9273 775.000

814.696 2.62476 8.11E-06 1402.52 supercritical 22143.925 800.000

839.696 2.71437 8.14E-06 1402.06 supercritical 22835.9227 825.000

864.696 2.80451 8.18E-06 1401.69 supercritical 23527.9203 850.000

889.696 2.89518 8.22E-06 1401.4 supercritical 24219.918 875.000

914.696 2.98637 8.26E-06 1401.19 supercritical 24911.9156 900.000

939.696 3.07807 8.30E-06 1401.07 supercritical 25603.9133 925.000

964.696 3.17028 8.34E-06 1401.03 supercritical 26295.9109 950.000

989.696 3.26299 8.38E-06 1401.08 supercritical 26987.9086 975.000

1014.7 3.3562 8.42E-06 1401.22 supercritical 27680.017 1000.004

1039.7 3.44989 8.46E-06 1401.46 supercritical 28372.0146 1025.004

1064.7 3.54405 8.50E-06 1401.79 supercritical 29064.0123 1050.004

1089.7 3.63868 8.55E-06 1402.21 supercritical 29756.0099 1075.004

1114.7 3.73376 8.59E-06 1402.74 supercritical 30448.0076 1100.004

1139.7 3.82929 8.64E-06 1403.36 supercritical 31140.0052 1125.004

1164.7 3.92524 8.68E-06 1404.09 supercritical 31832.0029 1150.004

1189.7 4.02162 8.73E-06 1404.92 supercritical 32524.0006 1175.004

1214.7 4.1184 8.78E-06 1405.85 supercritical 33215.9982 1200.004

1239.7 4.21556 8.83E-06 1406.9 supercritical 33907.9959 1225.004

1264.7 4.31311 8.88E-06 1408.05 supercritical 34599.9935 1250.004

1289.7 4.41101 8.93E-06 1409.31 supercritical 35291.9912 1275.004

1314.7 4.50926 8.98E-06 1410.69 supercritical 35983.9888 1300.004

1339.7 4.60783 9.03E-06 1412.18 supercritical 36675.9865 1325.004

1364.7 4.70671 9.08E-06 1413.78 supercritical 37367.9841 1350.004

1389.7 4.80587 9.14E-06 1415.5 supercritical 38059.9818 1375.004

1414.7 4.90531 9.19E-06 1417.34 supercritical 38751.9795 1400.004

1439.7 5.00499 9.24E-06 1419.3 supercritical 39443.9771 1425.004

1464.7 5.10491 9.30E-06 1421.38 supercritical 40135.9748 1450.004

1489.7 5.20502 9.36E-06 1423.58 supercritical 40827.9724 1475.004

1514.7 5.30533 9.41E-06 1425.9 supercritical 41519.9701 1500.004

1539.7 5.4058 9.47E-06 1428.34 supercritical 42211.9677 1525.004

1564.7 5.5064 9.53E-06 1430.91 supercritical 42903.9654 1550.004

1589.7 5.60712 9.59E-06 1433.6 supercritical 43595.9631 1575.004

1614.7 5.70794 9.65E-06 1436.42 supercritical 44287.9607 1600.004

1639.7 5.80882 9.71E-06 1439.37 supercritical 44979.9584 1625.004

1664.7 5.90974 9.78E-06 1442.44 supercritical 45671.956 1650.004

1689.7 6.01068 9.84E-06 1445.63 supercritical 46363.9537 1675.004

1714.7 6.11162 9.90E-06 1448.95 supercritical 47055.9513 1700.004

1739.7 6.21252 9.97E-06 1452.4 supercritical 47747.949 1725.004

1764.7 6.31336 1.00E-05 1455.98 supercritical 48439.9466 1750.004

1789.7 6.41412 1.01E-05 1459.68 supercritical 49131.9443 1775.004

1814.7 6.51477 1.02E-05 1463.5 supercritical 49823.942 1800.004

1839.7 6.61528 1.02E-05 1467.46 supercritical 50515.9396 1825.004

1864.7 6.71563 1.03E-05 1471.54 supercritical 51207.9373 1850.004

1889.7 6.8158 1.04E-05 1475.74 supercritical 51899.9349 1875.004

1914.7 6.91575 1.04E-05 1480.06 supercritical 52591.9326 1900.004

1939.7 7.01546 1.05E-05 1484.51 supercritical 53283.9302 1925.004

1964.7 7.11492 1.06E-05 1489.08 supercritical 53975.9279 1950.004

1989.7 7.21408 1.06E-05 1493.77 supercritical 54667.9255 1975.004

2014.7 7.31294 1.07E-05 1498.58 supercritical 55359.9232 2000.004

In the first 4 columns, be sure your data is in the correct units.

It is ok to put your own data in here, if it is correct.

It is ok to add or delete lines. Make sure the named ranges include all your data lines.

The original above data was taken from NIST data at 59'F.

* notes are at bottom of this page.

*see note concerning naming the range of data

*see note concerning unique identifiers of pipe

The data in the first column must be sequenced low to high.

this column

required for

calcs

this column

required for

calcs

this column

required for

calcs

this column

required for

calcs

this

column

for info

only

this column

for info only

this

column for

info only

all other

columns

available

for user

unique

identifier of

pipe pipe NPS

* pipe 2nd

identifier

inside

diameter,

inches

Iron Pipe

Size

Schedule

number

Stainless

Steel

Schedule

number

0.1250010 1/8 10 0.3070 . . 10S

0.1250040 1/8 40 0.2690 STD 40 40S

0.1250080 1/8 80 0.2150 XS 80 80S

0.1250202 1/8 STD 0.2690 STD

0.1250204 1/8 XS 0.2150 XS

0.2500010 1/4 10 0.4100 . . 10S

0.2500040 1/4 40 0.3640 STD 40 40S

0.2500080 1/4 80 0.3020 XS 80 80S

0.2500202 1/4 STD 0.3640 STD

0.2500204 1/4 XS 0.3020 XS

0.2500502 1/4 CU K 0.3050

0.2500504 1/4 CU L 0.3150

0.3750010 3/8 10 0.5450 . . 10S

0.3750040 3/8 40 0.4930 STD 40 40S

0.3750080 3/8 80 0.4230 XS 80 80S

0.3750202 3/8 STD 0.4930 STD

0.3750204 3/8 XS 0.4230 XS

0.3750502 3/8 CU K 0.4020

0.3750504 3/8 CU L 0.4300

0.3750506 3/8 CU M 0.4500

0.5000005 1/2 5 0.7100 . . 5S

0.5000010 1/2 10 0.6740 . . 10S

0.5000040 1/2 40 0.6220 STD 40 40S

0.5000080 1/2 80 0.5460 XS 80 80S

0.5000160 1/2 160 0.4660 . 160 .

0.5000202 1/2 STD 0.6220 STD

0.5000204 1/2 XS 0.5460 XS

0.5000206 1/2 XXS 0.2520 XXS

0.5000502 1/2 CU K 0.5270

0.5000504 1/2 CU L 0.5450

0.5000506 1/2 CU M 0.5690

0.6250502 5/8 CU K 0.6520

0.6250504 5/8 CU L 0.6660

0.7500005 3/4 5 0.9200 . . 5S

0.7500010 3/4 10 0.8840 . . 10S

0.7500040 3/4 40 0.8240 STD 40 40S

0.7500080 3/4 80 0.7420 XS 80 80S

0.7500160 3/4 160 0.6120 . 160 .

0.7500202 3/4 STD 0.8240 STD

0.7500204 3/4 XS 0.7420 XS

0.7500206 3/4 XXS 0.4340 XXS

0.7500502 3/4 CU K 0.7450

0.7500504 3/4 CU L 0.7850

0.7500506 3/4 CU M 0.8110

1.0000005 1 5 1.1850 . . 5S

1.0000010 1 10 1.0970 . . 10S

1.0000040 1 40 1.0490 STD 40 40S

1.0000080 1 80 0.9570 XS 80 80S

1.0000160 1 160 0.8150 . 160 .

1.0000202 1 STD 1.0490 STD

1.0000204 1 XS 0.9570 XS

1.0000206 1 XXS 0.5990 XXS

1.0000502 1 CU K 0.9950

1.0000504 1 CU L 1.0250

1.0000506 1 CU M 1.0550

1.2500005 1 1/4 5 1.5300 . . 5S

1.2500010 1 1/4 10 1.4420 . . 10S

1.2500040 1 1/4 40 1.3800 STD 40 40S

1.2500080 1 1/4 80 1.2780 XS 80 80S

1.2500160 1 1/4 160 1.1600 . 160 .

1.2500202 1 1/4 STD 1.3800 STD

1.2500204 1 1/4 XS 1.2780 XS

1.2500206 1 1/4 XXS 0.8960 XXS

1.2500502 1 1/4 CU K 1.2450

1.2500504 1 1/4 CU L 1.2650

1.2500506 1 1/4 CU M 1.2910

1.5000005 1 1/2 5 1.7700 . . 5S

1.5000010 1 1/2 10 1.6820 . . 10S

1.5000040 1 1/2 40 1.6100 STD 40 40S

1.5000080 1 1/2 80 1.5000 XS 80 80S

1.5000160 1 1/2 160 1.3380 . 160 .

1.5000202 1 1/2 STD 1.6100 STD

1.5000204 1 1/2 XS 1.5000 XS

1.5000206 1 1/2 XXS 1.1000 XXS

1.5000502 1 1/2 CU K 1.4810

1.5000504 1 1/2 CU L 1.5050

1.5000506 1 1/2 CU M 1.5270

2.0000005 2 5 2.2450 . . 5S

2.0000010 2 10 2.1570 . . 10S

2.0000040 2 40 2.0670 STD 40 40S

2.0000080 2 80 1.9390 XS 80 80S

2.0000160 2 160 1.6870 . 160 .

2.0000202 2 STD 2.0670 STD

2.0000204 2 XS 1.9390 XS

2.0000206 2 XXS 1.5030 XXS

2.0000502 2 CU K 1.9590

2.0000504 2 CU L 1.9850

2.0000506 2 CU M 2.0090

2.5000005 2 1/2 5 2.7090 . . 5S

2.5000010 2 1/2 10 2.6350 . . 10S

2.5000040 2 1/2 40 2.4690 STD 40 40S

2.5000080 2 1/2 80 2.3230 XS 80 80S

2.5000160 2 1/2 160 2.1250 . 160 .

2.5000202 2 1/2 STD 2.4690 STD

2.5000204 2 1/2 XS 2.3230 XS

2.5000206 2 1/2 XXS 1.7710 XXS

2.5000502 2 1/2 CU K 2.4350

2.5000504 2 1/2 CU L 2.4650

2.5000506 2 1/2 CU M 2.4950

3.0000005 3 5 3.3340 . . 5S

3.0000010 3 10 3.2600 . . 10S

3.0000040 3 40 3.0680 STD 40 40S

3.0000080 3 80 2.9000 XS 80 80S

3.0000160 3 160 2.6240 . 160 .

3.0000202 3 STD 3.0680 STD

3.0000204 3 XS 2.9000 XS

3.0000206 3 XXS 2.3000 XXS

3.0000502 3 CU K 2.9070

3.0000504 3 CU L 2.9450

3.0000506 3 CU M 2.9810

3.5000005 3 1/2 5 3.8340 . . 5S

3.5000010 3 1/2 10 3.7600 . . 10S

3.5000040 3 1/2 40 3.5480 STD 40 40S

3.5000080 3 1/2 80 3.3640 XS 80 80S

3.5000160 3 1/2 160 0.0000

3.5000202 3 1/2 STD 3.5480 STD

3.5000204 3 1/2 XS 3.3640 XS

3.5000502 3 1/2 CU K 3.3850

3.5000504 3 1/2 CU L 3.4250

3.5000506 3 1/2 CU M 3.4590

4.0000005 4 5 4.3340 . . 5S

4.0000010 4 10 4.2600 . . 10S

4.0000040 4 40 4.0260 STD 40 40S

4.0000080 4 80 3.8260 XS 80 80S

4.0000120 4 120 3.6240 . 120 .

4.0000160 4 160 3.4380 . 160 .

4.0000202 4 STD 4.0260 STD

4.0000204 4 XS 3.8260 XS

4.0000206 4 XXS 3.1520 XXS

4.0000502 4 CU K 3.8570

4.0000504 4 CU L 3.9050

4.0000506 4 CU M 3.9350

5.0000005 5 5 5.3450 . . 5S

5.0000010 5 10 5.2950 . . 10S

5.0000040 5 40 5.0470 STD 40 40S

5.0000080 5 80 4.8130 XS 80 80S

5.0000120 5 120 4.5630 . 120 .

5.0000160 5 160 4.3130 . 160 .

5.0000202 5 STD 5.0470 STD

5.0000204 5 XS 4.8130 XS

5.0000206 5 XXS 4.0630 XXS

5.0000502 5 CU K 4.8050

5.0000504 5 CU L 4.8750

5.0000506 5 CU M 4.9070

6.0000005 6 5 6.4070 . . 5S

6.0000010 6 10 6.3570 . . 10S

6.0000040 6 40 6.0650 STD 40 40S

6.0000080 6 80 5.7610 XS 80 80S

6.0000120 6 120 5.5010 . 120 .

6.0000160 6 160 5.1890 . 160 .

6.0000202 6 STD 6.0650 STD

6.0000204 6 XS 5.7610 XS

6.0000206 6 XXS 4.8970 XXS

6.0000502 6 CU K 5.7410

6.0000504 6 CU L 5.8450

6.0000506 6 CU M 5.8810

8.0000005 8 5 8.4070 . . 5S

8.0000010 8 10 8.3290 . . 10S

8.0000020 8 20 8.1250 . 20 .

8.0000030 8 30 8.0710 . 30 .

8.0000040 8 40 7.9810 STD 40 40S

8.0000060 8 60 7.8130 . 60 .

8.0000080 8 80 7.6250 XS 80 80S

8.0000100 8 100 7.4370 . 100 .

8.0000120 8 120 7.1870 . 120 .

8.0000140 8 140 7.0010 . 140 .

8.0000160 8 160 6.8130 . 160 .

8.0000202 8 STD 7.9810 STD

8.0000204 8 XS 7.6250 XS

8.0000206 8 XXS 6.8750 XXS

8.0000502 8 CU K 7.5830

8.0000504 8 CU L 7.7250

8.0000506 8 CU M 7.7850

10.0000005 10 5 10.4820 . . 5S

10.0000010 10 10 10.4200 . . 10S

10.0000020 10 20 10.2500 . 20 .

10.0000030 10 30 10.1360 . 30 .

10.0000040 10 40 10.0200 STD 40 40S

10.0000060 10 60 9.7500 XS 60 80S

10.0000080 10 80 9.5620 . 80 .

10.0000100 10 100 9.3120 . 100 .

10.0000120 10 120 9.0620 . 120 .

10.0000140 10 140 8.7500 . 140 .

10.0000160 10 160 8.5000 . 160 .

10.0000202 10 STD 10.0200 STD

10.0000204 10 XS 9.7500 XS

10.0000502 10 CU K 9.4490

10.0000504 10 CU L 9.6250

10.0000506 10 CU M 9.7010

12.0000005 12 5 12.4380 . . 5S

12.0000010 12 10 12.3900 . . 10S

12.0000020 12 20 12.2500 . 20 .

12.0000030 12 30 12.0900 . 30 .

12.0000035 12 35 12.0000 STD . 40S

12.0000040 12 40 11.9380 . 40 .

12.0000045 12 45 11.7500 XS . 80S

12.0000060 12 60 11.6260 . 60 .

12.0000080 12 80 11.3740 . 80 .

12.0000100 12 100 11.0620 . 100 .

12.0000120 12 120 10.7500 . 120 .

12.0000140 12 140 10.5000 . 140 .

12.0000160 12 160 10.1260 . 160 .

12.0000202 12 STD 12.0000 STD

12.0000204 12 XS 11.7500 XS

12.0000502 12 CU K 11.3150

12.0000504 12 CU L 11.5650

12.0000506 12 CU M 11.6170

14.0000005 14 5 13.6880 . . 5S

14.0000010 14 10 13.6240 . . 10S

14.0000010 14 10 13.5000 . 10 .

14.0000020 14 20 13.3760 . 20 .

14.0000030 14 30 13.2500 STD 30 .

14.0000040 14 40 13.1240 . 40 .

14.0000050 14 50 13.0000 XS . .

14.0000060 14 60 12.8120 . 60 .

14.0000080 14 80 12.5000 . 80 .

14.0000100 14 100 12.1240 . 100 .

14.0000120 14 120 11.8120 . 120 .

14.0000140 14 140 11.5000 . 140 .

14.0000160 14 160 11.1880 .. 160 .

14.0000202 14 STD 13.2500 STD

14.0000204 14 XS 13.0000 XS

16.0000005 16 5 15.6700 . . 5S

16.0000010 16 10 15.6240 . . 10S

16.0000010 16 10 15.5000 . 10 .

16.0000020 16 20 15.3760 . 20 .

16.0000030 16 30 15.2500 STD 30 .

16.0000040 16 40 15.0000 XS 40 .

16.0000060 16 60 14.6880 . 60 .

16.0000080 16 80 14.3120 . 80 .

16.0000100 16 100 13.9380 . 100 .

16.0000120 16 120 13.5620 . 120 .

16.0000140 16 140 13.1240 . 140 .

16.0000160 16 160 12.8120 . 160 .

16.0000202 16 STD 15.2500 STD

16.0000204 16 XS 15.0000 XS

18.0000005 18 5 17.6700 . . 5S

18.0000010 18 10 17.6240 . . 10S

18.0000010 18 10 17.5000 . 10 .

18.0000020 18 20 17.3760 . 20 .

18.0000030 18 30 17.1240 . 30 .

18.0000040 18 40 16.8760 . 40 .

18.0000060 18 60 16.5000 . 60 .

18.0000080 18 80 16.1240 . 80 .

18.0000100 18 100 15.6880 . 100 .

18.0000120 18 120 15.2500 . 120 .

18.0000140 18 140 14.8760 . 140 .

18.0000160 18 160 14.4380 . 160 .

18.0000202 18 STD 17.2500 STD

18.0000204 18 XS 17.0000 XS

* Notes:

You may add pipes to this data. The first four columns must conform to the rules.

All of the numbered data, but not the text headers, in the first four columns, must be range named "Pipe_Table"

If the pipe 2nd identifier is between 5 and 160 inclusive, it should be the last digits of the unique identifier of the pipe.

All other pipe identifiers get special code numbers, see below, this is not elegant but the best I could do now.

Below is a lookup table for the calculations, do not change it unless you know what you are doing

The first column must be sorted low to high.

If the 2nd

pipe

identifier is

It gets the

code

number

CU K 502

CU L 504

CU M 506

STD 202

XS 204

XSS 206

* notes are at bottom of this page. Do not change ANYTHING, see notes.

"w.c. units of pressure

0.036127 multiplier, 1 "w.c.= how many psi

14.696 psia at 0 "w.c.

Do not change any cells. All cells values are from the Home Page, calculated, or constants.

NFPA 54 - 2012 offers two equations for determining natural gas pipe size.

They are the basis for many Building Code gas pipe sizing requirements.

These equations are different than the method of this spreadsheet and may give different results.

7 "w.c., starting pressure

14.94889 psia starting pressure

0.252891 psig, starting pressure

7 "w.c., starting pressure

6.7 "w.c., end pressure, minimum satisfactory end pressure

14.93805 psia end pressure

0.242053 psig, end pressure

6.7 "w.c., end pressure

where starting pressure is less than 1.5 psi (Low)

applicable in this case

0.901116 D, Diameter, minimum required per NFPA 54-2012, inches=(Q^0.381)/(19.17*(delta H/(Cr*L))^0.206)

100 Q, flow in scfh

7 "w.c., starting pressure

6.7 "w.c., end pressure, minimum satisfactory end pressure

0.3 pressure loss, "w.c., maximum satisfactory pressure loss"

0.3 delta H, pressure drop, "w.c.

0.6094 Cr, a constant for natural gas

100 L, feet of pipe

where starting pressure is 1.5 psi or above (High)

NOT applicable in this case

0.898381 D, Diameter, minimum required per NFPA 54-2012, inches=(Q^0.381)/(18.93*((P1^2-P2^2)*Y)/(Cr*L))^0.206

100 Q, flow in scfh

14.94889 P1= upstream pressure in psia

14.93805 P2= downstream pressure in psia

0.9992 Y, a constant for natural gas

0.6094 Cr, a constant for natural gas

100 L, feet of pipe

D, Diameter, minimum required per NFPA 54-2012, inches=(Q^0.381)/(19.17*(delta H/(Cr*L))^0.206)

D, Diameter, minimum required per NFPA 54-2012, inches=(Q^0.381)/(18.93*((P1^2-P2^2)*Y)/(Cr*L))^0.206