Storm Drainage System

Question 1

a pipe connected from bldg gutter to the downspout on conductor

Answer 1

LEADER

Question 2

a vertical pipe to convey rainwater

Answer 2

CONDUCTOR OR DOWNSPOUT

Question 3

a vertical pipe to convey rainwater

Answer 3

CONDUCTOR OR DOWNSPOUT

Question 4

receptacle in which liquids are retained for sufficient period of time to allow settleable material to deposit

Answer 4

CATCHBASIN

Question 5

pipeline from the bldg to public or storm drainage

Answer 5

HOUSE STORM SEWER

Question 6

runs off over the earth surface after a storm

Answer 6

STORM WATER

Question 7

Type of water that stands in or passes through the ground

Answer 7

GROUND WATER

Question 8

runs off over the surface of the ground

Answer 8

SURFACE WATER

Question 9

What materials should rainwater downspout or conductor pipe within the interior of the bldg inside a pipe chase be made of?

Answer 9

Cast Iron
galvanized steel
iron
brass
copper
lead
schedule 40 ABS DWV
Series 1000 PVC DWV

Question 10

what is the material of rainwater downspout on conductor on the exterior side?

Answer 10

Gauge 21 Galvanized sheet metal

Question 11

What is the material at the bottom of the conductor draining over the catchbasin as protection from damage?

Answer 11

Steel pipe or Cast Iron Pipe

Question 12

What is the material for rainwater piping located within a medium height bldg?

Answer 12

Galvanized Iron Pipe Schedule 30
Cast Iron soil pipe SV type
copper tube DWV type
schedule 40 ABS DWV
Series 1000 PVC DWV

Question 13

Downspouts for high-rise bldgs shall resist _______installed within the pipe chase

Answer 13

high hydrostatic pressure

Question 14

What are approved roof drain material?

Answer 14

Cast iron
copper
other corrosion-resistant material

Question 15

what is the minimum ht extension of strainers above the surface of the roof?

Answer 15

102 mm

Question 16

What is the minimum area of dome-type strainers times the area of the outlet pipe?

Answer 16

1-1/2 times (1.5 times)

Question 17

What is the minimum area of flat-surface type roof deck strainers for use on sun decks, parking decks, times the area of the outlet pipe?

Answer 17

2 times

Question 18

What is the material for roof drains passing through roof into the interior of a bldg?

Answer 18

cast iron drain with integrally-cast water-Stop ring around the outside of the body

Question 19

What is the joinery of outlet connections of strainers?

Answer 19

inside-caulked or female screwed

Question 20

Vertical rainwater shall be sized based on maximum depth in mm or _______

Answer 20

rainfall per hour

Question 21

What is the rainfall intensity used in Manila?

Answer 21

102 mm/hr

Question 22

What is the computation for rainwater pipe sizing with 1 wall?

Answer 22

Roof Area +50% of wall area

Question 23

What is the computation for rainwater pipe sizing with 2 adjacent walls?

Answer 23

Roof Area + 35% wall areas

Question 24

What is the computation for rainwater pipe sizing with 2 walls opposite each other and of same heights?

Answer 24

0%

Question 25

What is the computation for rainwater pipe sizing with 2 wall opposite of differing hts?

Answer 25

Roof Area +50% of wall area above top of lower wall

Question 26

What is the multiplier for finding the depth of equivalent area of rectangular gutter?

Answer 26

0.392

Question 27

What is the multiplier for finding the width of equivalent area of rectangular gutter?

Answer 27

0.8862