問題一覧
1
Number of single compartment sinks or laundry tubs of the same depth, or lavatories that can be served by one trap
3
2
Maximum center-to-center distance of adjacent fixtures being served by a single trap
0.75m
3
Maximum length of tailpiece
0.6m
4
Minimum horizontal distance of a trap arm to vent
2x trap diameter
5
Trap arm change of direction without requiring a cleanout
> 90°
6
For trap arms 75 mm Ø and larger, the change of direction not requiring a cleanout
< 22 1/2°
7
Maximum developed length between the trap of a water closet from the top of closet ring to inner edge of vent
1.8m
8
Minimum thickness of exposed and readily accessible drawn brass tubing trap
GA 17 (1.1mm)
9
Maximum number of slip joints that may be used on the outlet side of a trap
1
10
Depth of trap seals
2" to 4"
11
Minimum water seal for sand interceptors and similar clarifiers
152mm
12
Rate of flow of an individual grease trap
1.3 to 3.4 L/s
13
The total capacity of fixtures discharging into a grease trap shall not exceed _____ times the flow rate of the grease trap
2 1/2
14
Maximum number of fixtures connected to one grease trap
4
15
Maximum horizontal distance between the fixture outlet and the grease trap, so grease trap may serve as fixture trap
1.2m
16
Maximum vertical tailpiece or drain between the fixture outlet and the grease trap, so grease trap may serve as fixture trap.
0.75m
17
Minimum water seal for grease trap
51mm or 2"
18
Size of solids to be screened from laundry discharge by means of removable wire basket
12.7mm or larger
19
Minimum outlet size of a sand interceptor
76mm or 3"
20
Minimum net opening dimension of the inlet section of a sand interceptor
0.2 sq.m
21
The minimum depth of sand interceptor under the invert of the outlet pipe
610mm or 24"
22
Increase in the area of inlet section for each 18.9 LPM or fraction thereof over 75.7 LPM
0.09 sq.m
23
Minimum area of sand interceptor outlet section
50% of the inlet section
24
Distance of trap to vent for 32mm Ø
762mm or 30" or 2.5'
25
Distance of trap to vent for 38mm Ø
1067mm or 42" or 3.5'
26
Distance of trap to vent for 51mm Ø
1524mm or 60" or 5'
27
Distance of trap to vent for 76mm Ø
1829mm or 72" or 6'
28
Distance of trap to vent for 102mm Ø and larger
3048mm or 120" or 10'
29
Maximum developed length between water closet and vent
1829mm or 6'
30
Minimum thickness of galvanized sheet metal for rainwater downspout or conductor
GA 26 (0.40mm)
31
Rainwater piping commencing ____ from the exterior of a building may be suitable approved materials
0.6m or 2'
32
Extension of roof drain strainers above the surface of the roof
102mm or 4"
33
Minimum total net inlet area of roof drain with dome-type strainers
1.5x area of the outlet
34
Minimum total net inlet area of drain with roof deck strainers
2x area of the outlet
35
Rainfall intensity normally used around Manila area
102mm/hr
36
Additional for area of 1 wall
50%
37
Additional for area of 2 adjacent walls
35%
38
Additional for area of 2 opposite walls
no additional area
39
Minimum diameter of building sewer, but not less than size of the building drain
152mm or 6"
40
When gutter has semi-circular bottom, the depth of equivalent area of rectangular gutter
0.392x diameter
41
When gutter has semi-circular bottom, width of equivalent area of rectangular gutter
0.8862x diameter
42
The sizing data for vertical conductors, leaders, and drains is based on the pipes flowing ____ full
7/24
43
Ratio of the side dimension of a rectangular vertical piping
3:1
44
Public sewer is not available if more than
61m
45
Minimum diameter of building sewer, but not less than the size of the building drain
152mm or 6"
46
Recommended slope for building sewer
2%
47
Allowable slope for drainage piping 102 mm or 152.4mm in diameter given the site constraints
1%
48
Allowable slope for drainage piping 203 mm or larger in diameter
0.5%
49
Distance of the building sewer from the outer face of any building foundation or wall
0.6m or 2'
50
Minimum depth of building sewer below the finish surface of the ground
0.3m or 1'
51
Aggregate offset angle to be provided with an additional cleanout
135°
52
Length of building sewer not requiring for a cleanout
< 3m
53
Maximum distance between manholes
91m
54
Distance between bottom of water pipe and top of the sewer or drain line
0.3m or 1'
55
Horizontal distance between the water line and the sewer or drain line
0.3m or 1'
56
Distance between sewer or drainage piping and water pipes crossing above such drainage pipes
0.3m or 1'
57
Minimum distance of water pipe joints away from a sewer line
3m or 10'
58
Distance within the property line where every abandoned building sewer shall be plugged or capped
1.5m or 5'
59
Maximum number of days from the time of connection to the public sewer an abandoned disposal facility shall be filled
30 days
60
Minimum horizontal distance of a building or structure from the building sewer
0.6m or 2'
61
Minimum horizontal distance of water supply wells from the building sewer
15.2m
62
Minimum horizontal distance of streams from the building sewer.
15.2m
63
Minimum horizontal distance of on-site domestic water service line from the building sewer
0.3m or 1'
64
Minimum horizontal distance of public water main from the building sewer
0.3m or 1'
65
Allowable reduction from water supply wells when constructed of approved materials for use within a building instead of 15.2m
7.6m
66
Maximum/Minimum FU on 152mm building sewer @ 2%
no minimum
67
Maximum/Minimum FU on 203mm building sewer @ 2%
3900/275
68
Maximum/Minimum FU on 254mm building sewer @ 2%
6800/300
69
Maximum/Minimum FU on 305mm building sewer @ 2%
11200/235
70
Minimum depth to be filled with molten pig lead
25.4mm
71
Extension of the finished joint below the rim of the hub
3.2mm
72
Minimum wall thickness of threaded plastic pipe
Schedule 80
73
Minimum thickness of exposed wiped surface on each side of a wiped joint, and at least as thick as the material being joined
19mm
74
Maximum lead content allowable for solders and fluxes in potable water piping
2%
75
Job-Fabricated female screws
Schedule 80
76
Enlargement of closet bend from _____ shall be considered an obstruction
76mm to 102mm
77
Minimum width of continuous and indelibly colored stripe marking for hard drawn copper tubing
6.4mm
78
Green Copper Tubing
Type K
79
Blue Copper Tubing
Type L
80
Red Copper Tubing
Type M
81
Yellow Copper Tubing
Type DMV
82
Minimum weight and thickness of sheet lead for lead safe pans
19.56 kg/sq. m.; 1.6 mm thick
83
Minimum weight and thickness of sheet lead for flashing or vent terminals
14.63 kg/sq. m.; 1.2 mm thick
84
Minimum wall thickness of lead bends and lead traps
3.2mm
85
Approximate diameter of closet rings or flanges
178mm or 7"
86
Width of closet ring or flange
38mm or 1 1/2"
87
Minimum thickness of caulked-on closet rings or flanges
6.4mm
88
Minimum overall depth of caulked-on closet rings or flanges
51mm or 2"
89
Number of bolts per water closet
4
90
Slope of threaded-type drainage fittings
2%
91
Sizes of valves that shall have cast iron bodies
102mm or larger
92
Sizes of valves that shall have cast brass or bronze bodies
less than 102mm
93
Sizes of valves that shall be brass and bronze metal
up to 51mm