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