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This study guide provides a comprehensive overview of key concepts and regulations related to georgia's residential contractor exam. It includes a series of questions and answers covering topics such as septic system design, installation, and maintenance, as well as relevant setbacks and regulations. The guide is designed to help individuals preparing for the exam by providing a structured approach to understanding the material and identifying areas for further study.
Typology: Exams
1 / 6
Applications include: - Answer - Name and address of property owner
Surface drainage ditch setback: Septic tank - Answer 15 feet Trash pits and embankments setback: Septic tank and absorption field - Answer 15 feet subsurface drainage setback: absorption lines - Answer 10 feet upgrade or 30 feet downgrade Water supply lines setback: absorption lines - Answer if within 10 feet the water supply line but be at least 12 inches above the top layer of aggregate of the field lines and encased in single length larger diameter water pipe. water supply lines setback: Septic tank - Answer 10 feet After permit has been issued grading ... - Answer would adversely affect the sewage system and may render the permit void First compartment of septic tank is _____ - Answer designed to contain 2/3 of total liquid capacity Minimum liquid capacity for a 1-4 bedroom single family home? - Answer 1000 gallons Capacity of septic tank will be increased by 250 gallons for? - Answer Each additional bedroom over 4 Garbage grinders increase septic tank capacity by? - Answer 50 percent primary purpose of a septic tank is? - Answer to settle out solid matter from liquid The outlet of a septic tank should be _____ lower than the inlet? - Answer 2 inches Once installed, the septic tank should have _______ of cover? - Answer 6 inches
if more than _______ of cover is to be placed over the tank a ______ will be required. - Answer 12 inches, riser An approved filter must be installed on the ___________ of the tank - Answer outlet end A grease trap is required when? - Answer grease introduced into the system exceeds 50 milligrams/liter Effluent from grease trap shall go to the _______ and not directly to the ________ - Answer septic tank, field lines All septic tank openings must be ________ - Answer sealed Pump tank specifications - Answer - Submersible and wastewater approved
Absorption trenches shall be no more than ____________, and spaced a minimum of ______________, center to center - Answer 36 inches, 7 feet ____________ tons of gravel aggregate per ____________ linear feet of absorption field will be needed to maintain a 12 inch depth - Answer 15, 100 Minimum depth of aggregate shall be _______ with ________ below the perforated pipe and filled to ________ above the pipe - Answer 12 inches, 6 inches, 2 inches ________________ shall be laid in the center of the trench with the perforations oriented toward the ___________ of the pipe - Answer Perforated pipe, bottom a layer or pervious ____________________ shall be placed over the aggregate before back filling - Answer building paper, straw, or similar approved material minimum of _____ to ______ inches is required over absorption lines - Answer 6, 12 Scheduled 40 PVC or equivalent solid pipe fittings with sealed, watertight, root resistant joints shall be used .... - Answer for horizontal and vertical changes in direction or grade and to cross under roadways and paved areas What should not be conducted while wet? - Answer Excavation for absorption trenches What can occur if trenches are dug while soil is wet? - Answer Smearing and potential irreversible damage to soil structure Trenches must be installed a minimum of ____________ above any permanent seasonal ground water table, rock, or other impervious soil layer - Answer 2 feet Level Field System - Answer level or sloping topography of 5 percent. All lines interconnected to form a continuous system. Lines should be 6 inches below tank outlet. a single line cam be installed up to 125 feet without interconnection
Serial Field System - Answer used on sloping topography. Trenches constructed to run parallel along ground contours. minimum of four inches from tank outlet to lines. Soil between trenches must be left undisturbed. tied top to top Distribution Box Method - Answer can be used on level or sloping topography. Must be set on a level concrete pad or undisturbed earth. Made to provide equal flow to each line. minimum of 6 inches of cover. sewer pipe turned downward when emptied into d box. lines connected by 4 inch 40 PVC pipe. each line shall not exceed more than 125 feet. lines installed level or on uniform change in grade no more than 4 inches of fall per 100 feet. Chamber system - Answer Septic system using chambers of molded polyolefin plastic. The plastic is shaped to forma hollow structure with an exposed bottom area for filtration Chambers shall be designed and constructed to provide .... - Answer - ports to allow air movement and effluent access to trench sidewall absorption surfaces