HomeMy WebLinkAbout2685 Quay St Gas Sizing Calculationsrez,
hnson, &
sociates
May 4, 2022
Building Division
Wheat Ridge, CO 80033
303.235.2892
RE: 2685 Quay StreetWheat Ridge, CO 80033
This document is submitted to clarify the natural gas piping design for the above noted residence. As par[ of
the renovation the homeowner has replaced the furnace, water heater and range largely in the same place.
Existing piping mains are reused throughout the house. The piping as currently installed is acceptably sized
per the IFGC 402.4 gas sizing calculations methods.
Refer to the attached calculations and owner provided one line sketches for additional information
Please do not hesitate to contact us with any questions regarding this clarification.
Sincerely, �yp,DO L/CF
O c A,yx� y�o
5
Darin Ramirez, PE q, 05/04/2022
Y0'
Principal ey`Sp�`
Ramirez, Johnson & Associates, LLC
Ramirez, Johnson, and Associates, LLC
2590 Walnut St.
Denver, CO 80205
720.598.0774 Page 1 of 1
mirez,
hnson, &
sociates
PROJECT 2685 Ouay Street PROJECT JOB
NAME: Wheat Ridge, CO 80033 NUMBER: 22076
BY: DWR DATE: 5/412022
Low Pressure Natural Gas Pressure Drop Calculation Dot
Sized per International Fuel Gas Code 2018 -Appendix A.4 O Q AM/q `PQ
Cr 0.6094 5
Calculated Presssure q 05/04/2022
Drop=Cr"L"((O/(2313•(DA2.623)))A(1/0.541)) P
SSroNAX.
Segment ID
Pipe Diameter(in.)
Length(R.)
Load(MBH) Load(CFH)
PD(in. w.c.)
1
0.75
5.0
172 148
0.08
2
0.75
10.0
172 148
0.15
3
0.75
12.2
172 148
0.19
4
0.75
13.3
172 148
0.20
5
0.75
9.2
172 148
0.14
6
0.75
2.0
172 148
0.03
7
0.75
2.0
172 148
0.03
13
0.5
5.0
35 30
0.03
14
0.5
6.0
35 30
0.03
35
0.5
2.7
35 30
0.02
16
0.5
2.0
35 30
0.01
Total Pressure Loss
0.91 in we
Meter Inlet Pressure
6 in we
Pressure Available at Appliance
5.09 in we
Manufacturer Listed Minimum Pressure
3 in we
Page 1 of 2
FURNACE BRANCH
Segment ID Pipe
Diameter(in.)
Length(R.)
Load(MBH) Load(CFH)
PD(in. w.c.)
1
0.75
5.0
172 148
0.08
2
0.75
10.0
172 148
0.15
3
0.75
12.2
172 148
0.19
4
0.75
13.3
172 148
0.20
5
0.75
9.2
172 148
0.14
6
0.75
2.0
172 148
0.03
7
0.75
2.0
172 148
0.03
30
0.75
5.0
80 69
0.02
11
0.75
6.0
80 69
0.02
12
0.75
2.7
80 69
0.01
Total Pressure Lou
0.87 in we
Meter Inlet Pressure
6 in we
Manufacturer Listed Minimum Pressure
Pressure Available at Appliance
5.13 in we
Manufacturer Listed Minimum Pressure
5 in we
RANGE BRANCH
Segment ID
Pipe Diameter(in.)
Length(ft.)
Load(MBH) Load(CFH)
PD(in. w.c.)
1
0.75
5.0
172 148
0.08
2
0.75
10.0
172 148
0.15
3
0.75
12.2
172 148
0.19
4
0.75
13.3
172 148
0.20
5
0.75
9.2
172 148
0.14
6
0.75
2.0
172 148
0.03
7
0.75
2.0
172 148
0.03
8
0.5
6.0
57 49
0.09
9
0.5
6.0
57 49
0.09
Total Pressure Loss
0.99 in we
Meter Inlet Pressure
6 in we
Pressure Available at Appliance
5.01 in we
Manufacturer Listed Minimum Pressure
4.5 in we
Page 2 of 2