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Mechanical Systems Cheat Sheet by

HVAC
hvac

MAX GPM

*PIPE SIZE8
5 FPS
8 FPS
10 FPS
1/2"
4.5
6
8
3/4"
8
13
18
1"
16
20
29
1-1/4"
22
30
43
1-1/2"
28
40
55
2"
48
70
95
2-1/2"
73
105
150
3"
110
160
205

MAX SFU

*PIPE SIZE8
5 FPS
8 FPS
10 FPS
1/2"
1.0
3
4
3/4"
4
9
16
1"
12
23
47
1-1/4"
27
55
95
1-1/2"
47
85
144
2"
120
225
350
2-1/2"
230
400
600
3"
525
680
980

906.1 FIXTURE VENTS

SIZE OF TRAP
SLOPE /FOOT
DISTANCE FROM TRAP
1-1/4"
1/4"
5
1-1/2"
1/4"
6
2"
1/4"
8
3"
1/8"
12
4"
1/8"
16

RPBP Relief Valves

Size of RPBP
Required Floor drain size
2"
55 GPM
3"
112 GPM
4"
170 GPM
5"
350 GPM
6"
450 GPM
 

Denver Sand Oil Intercept Sizing

(1) Cubic Foot of interc­eptor Capaci­ty:
100 sf of floor space:
Machine shops/ auto repair
250 sf of floor space
paint spray booths
2000 sf of floor space
car garage w/ washed floors
3000 sf of floor space
parking garage where tenants cars are washed
4000 sf of floor space
parking garage with no water outlets
Use Copeland 100 Gal/200 Gal concrete blocks for use.

Grease Interc­eptor sizing

Capa­city = [2.5] x [2.0] x [CUF] x [Seating Count]
Gallons per customer = 2
Turn over rate = 2.5
Seating Capacity = architects seating count, NOT OCCUPANCY COUNT.
Cubic Usage factor= counting fixtures ONLY IN KITCHEN, connected ONLY TO GREASE.

Starting CUF = 2.25

Additional Fixtures have a factor of 0.25 CUF

Appliances have a factor of 0.5 CUF: stove(­s)/­gri­ddl­e(s),3 comp or 2 comp sink,o­ven­(s),Pot Sink,b­roi­ler­(s),Mop Sink, fryer(­s),­Floor Sink,w­ok(­s),Hand Sink, Garbage Dispos­al,­Dis­hwasher
• Must include sanitary Tee’s from Denver standards. Copeland sheet does not include.
• Combine vents in building at 42” AFF and route thru roof
• If total vent length >40’, increase vent size from 2” to 3”
• Coordinate location w/ civil engineer. They will need capacity, location, and vent routing.
• Include Denver standard and GI dimensions on drawing in interc­eptor detail.
Core & Shell Retail - 1000 Gal / restaurant tenant space
 

IPC Fixture Values - Private

FIXT­URE
COLD
HOT
TOTAL
BRG
2.7
1.5
3.6
Bathtub
1.0
1.0
1.4
Dish Machine
--
1.4
1.4
Kitchen Sink
1.0
1.0
1.4
Lavatory
0.5
0.5
0.7
Shower Head
1.0
1.0
1.4
8lb washing machine
1.0
1.0
1.4
WC -tank
2.2
--
2.2
WC - Flushmeter
2.0
--
2.0

AWWA (2nd ed) Fixture Values (gpm)

Toilet (Flush) - 4
Urinal (wall) - 16
Toilet (Flush Valve) - 35
Shower - 2.5
Shower - 2.5
Lavatory - 1.5
Kitchen Sink - 2.2
Utility Sink - 4
Dish Washer - 2
CWSW- 6
1/2" hosebib - 5
5/8" hosebib - 9
Pressure adjust­ments:
50 PSI - 0.9
60 PSI - 1.0
70 PSI - 1.09
80 PSI - 1.17
90 PSI - 1.25

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