QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS ) AND STUDY
GUIDES /ALREADY GRADED A+.
What are the capacities for each side of a septic tank? - ANSWER-2/3
inlet side, 1/3 outlet side
How many inches lower should the outlet be from the inlet in a septic
tank? - ANSWER-3"
What information must be present on the outlet side of a septic
tank? - ANSWER-- Name of manufacturer - Date manufactured
- Size of tank in gallons
- External load limit
- Warning placard
How many additional gallons per bedroom are required for each
bedroom beyond 3? - ANSWER-125 gallons
How many additional gallons per bedroom are required for each
bedroom beyond 4? - ANSWER-225 gallons
How far below finished grade can clean out and baffle inspection
manholes be? - ANSWER-No deeper than 12"
,Tank riser covers shall be at least _________ lbs,
or_______________________, or
_______________________________ - ANSWER-59 lbs, tank covers
shall remain on tank clean outs, a secondary safety device shall be
provided
What are the 3 main functions of a septic tank? - ANSWER-
1. Removes most of the settleable solids
2. Provides and effluent of relatively uniform physical,
chemical and biological characteristics
3. Provides some reduction in
pollution levels in the effluent
Where should perc tests be conducted? - ANSWER-In primary and
reserve septic areas
How many inches maximum should a perc hole be? - ANSWER-12"
How many inches of water shall be used for a perc test presoak? -
ANSWER-12"
How many inches of water shall be used for a perc test? - ANSWER-
12"
How many consecutive readings shall be taken for a perc test -
ANSWER-3
,Perc test readings are measured to the nearest ______" - ANSWER-
1/8"
What is the perc rate calculation? - ANSWER-Time/Reading in inches
No leaching system shall be constructed in areas
where: - ANSWER-- High groundwater
- Surface
flooding
- Ledge
rock
Leaching system shall be a minimum of 18"
above: - ANSWER-- Groundwater - Mottling
- Hardpan
Leaching system shall be ____' above ledge or fractured rock -
ANSWER-4'
Leaching system shall be ____" above decomposing ledge (rock) -
ANSWER-24"
Where underlying natural soil has a perc rate faster than one minute
per inch, the bottom shall not be less than ____'
, above ledge rock -
ANSWER-8'
Where underlying natural soil has a perc rate faster than one minute
per inch, the bottom shall not be less than ____"
above maximum
groundwater - ANSWER-
24"
In a gravity system leaching field, what is the maximum length from
either side of a d-box? - ANSWER-75'
For intermittent dosing, what is the maximum length from either side
of a d-box? - ANSWER-100'
What is the minimum soil coverage over a leach field? - ANSWER-6"
Center to center spacing on all leach fields is ____' - ANSWER-7'
What is the MLSS formula" - ANSWER-MLSS=FF (Flow factor) x PF
(Perc factor) x HF (Hydraulic factor)
What is the FF formula for up to 3 BR house? - ANSWER-(#BR x 150
GPD)/300 GPD = FF