Radon Mitigation Topic 2 correctly answered

Radon Mitigation Topic 2 In conducting a sub-slab communication test prior to the design of a sub-slab depressurization (SSD) system, which one of the following procedures is most appropriate? Select one: A. The vacuum-cleaner suction hole and the test holes should always be placed on the perimeter of the slab. B. Drill the vacuum-cleaner suction hole near the expected location of the suction pipe; drill one test hole as far away as possible. C. Drill the vacuum-cleaner suction hole near the expected location of the suction pipe; drill pressure-measurement test holes on opposite sides of things like grade beams that could block air movement, as well as the furthest side of the slab. D. Place the vacuum-cleaner suction hole in the center of the slab; placement of the test holes is not important. - correct answer C. Drill the vacuum-cleaner suction hole near the expected location of the suction pipe; drill pressure-measurement test holes on opposite sides of things like grade beams that could block air movement, as well as the furthest side of the slab. When operating, what typically causes the least vacuum in a house? Select one: A. Downdraft range exhaust B. Evaporative cooler (swamp cooler) C. Oil-fired boiler with combustion air D. Bathroom exhaust fan - correct answer B. Evaporative cooler (swamp cooler) Radon levels in houses can be lowered significantly by opening windows and doors. After the doors and windows are closed again, approximately how long will it take for radon levels to rise to their closed-house values? Select one: