Sump and sewage tanks

Question 1

Sump tanks may only receive discharge from

Answer 1

Fixtures that cannot drain to the building sewer by gravity

Question 2

Stormwater sumps are installed where

Answer 2

All of the answers

Question 3

________ type of pump are most common types of pump used for storm and sewage pumps

Answer 3

Centrifugal

Question 4

Pumps where the motor is actually in the sum are referred to as

Answer 4

Submersible

Question 5

Some storm some pumps are equipped with__________ to protect the impeller from damage

Answer 5

A screen or strainer

Question 6

So pumps are designed to handle solids of up to

Answer 6

2 inch

Question 7

Effluent pumps are typically used to pump….

Answer 7

Septic tank discharge elevated absorption bed

Question 8

Control switches that relay on the weight of the water acting on a flexible disc….

Answer 8

Diaphragm switches

Question 9

A storm or sewage pump installation that has one pump is referred to as

Answer 9

Simplex system

Question 10

A storm or sewage pump installation that has two pumps is referred to as

Answer 10

Duplex system

Question 11

Duplex pumps are typically controlled by

Answer 11

Alternating lag lead controller

Question 12

A storm sump pump may not discharge into a

Answer 12

Sanitary building drain

Question 13

The minimum size of a sewage or sump pump discharge is

Answer 13

The same size as the pump connection

Question 14

The discharge of a water sewage pump must be installed with____________ _________ and_________ that order in the direction of flow

Answer 14

Union, check valve and shut off valve

Question 15

In a duplex installation, the valve train referred to in question 14

Answer 15

Must be installed for each pump

Question 16

The sewage ejector must connect to either the sanitary building, drain or a

Answer 16

Sanitary building, sewer

Question 17

When a building trap is installed, the force main must connect

Answer 17

Downstream of the building trap

Question 18

Sewage tank must be provided with

Answer 18

Both A and C

Question 19

So eject is manually controlled the sewage tank must

Answer 19

Be large enough to hold 24 hours of accumulation

Question 20

The absolute minimum size of rent for a sewage tank is

Answer 20

2 inch

Question 21

If a sewage tank has a 4 inch inlet, the minimum vent size is

Answer 21

3 inch

Question 22

If the inlet to a sewage tank is 5 inch or larger the minimum size vent is

Answer 22

4 inch

Question 23

The vent for sewage tanks are connected to

Answer 23

The venting system

Question 24

Fixtures that connect to a sewage tank must be

Answer 24

Trapped vented

Question 25

One calculating the vent loading form, a bathroom group, discharging into a huge tank the vent for the huge ejector itself has a vent load

Answer 25

Equal to no factor

Question 26

The size of vent required for a sewage tank that serves three water closet 4 lavs and two wall hung urinals from a single sub drain would be

Answer 26

3 inch

Question 27

Sanitary forced mains are indicated on drain plants and stack elevations as

Answer 27

Broken red lines

Question 28

Storm forced mean or indicated on drain plans and stack elevations as

Answer 28

Broken blue lines

Question 29

One calculate the size of a sanitary building drain that receives a forced main discharge the….

Answer 29

The L/sec. Rating of the ejector is converted to fixture unit and added to the total fixture unit load from the fixture served by the building dream.

Question 30