Test Q's Per Instructors

Question 1

What is the lifespan of standard asphalt shingles?

Answer 1

Approx. 20 years

Question 2

Roofing Underlayment at Rake (Gable) Edge, and Drip (Eave) Edge:

Answer 2

Underlayment goes UNDER flashing at Rake Edge

Underlayment goes OVER flashing at Drip Edge

Question 3

Min/Max Riser Heights:

Answer 3

4” Min

7 3/4” Max

3/8” Max Allowable Height difference at risers.

Question 4

Handrails are required when:

Answer 4

Stairs have four or more risers.

Walking Surface with edge that is 30” or more above ground

Question 5

Sub Panel Grounding:

Answer 5

Grounds and Neutrals must be SEPERATE at sub-panels.

If bonded, it gives electricity a path to RETURN to it’s source, IE the entire circuit and all metal it’s in contact with will be energized.

(Neutrals bonded at floating bus bar, Grounds bonded at bus bar bonded to panel)

Question 6

How should a dishwasher be secured (most common)

Answer 6

Brackets screwed into underside of the countertop

Question 7

Max water temp:

Answer 7

120 F

Question 8

What is a girder?

Answer 8

A support beam of a subfloor

Question 9

Proper height for photo-electric eyes?

Answer 9

4-6” above the floor

Question 10

Required slope for concrete landings/patios?

Answer 10

1/4” per foot

Question 11

Two layer of underlayment are required at roofs with a pitch of:

Answer 11

2:12 to 4:12

Question 12

Location and purpose of expansion tanks for steam heat systems:

Answer 12

The attic

Expansion Tanks give space for hot water to expand within the closed system

Question 13

Height of siding from grade:

Answer 13

8” no matter the siding material

Question 14

Every Habitable room in a house needs to have:

Answer 14

A heat source

Question 15

A chimney with deteriorated mortar and missing bricks requires:

Answer 15

Re-pointing

Tuck pointing is the original mortar install/application, Re-pointing removes existing and adds new mortar

Question 16

Wires outside a gas furnace are scorched, I should suspect:

Answer 16

Flame Roll-out

Question 17

Most common cause of mold growth/moisture issues in the attic:

Answer 17

Air leaking from house into the attic

Question 18

Drainage tile can best be described as:

Answer 18

A pipe set in gravel continuously along the exterior of a building.

Holes will be oriented down/at bottom half of pipe

(With the intent to move water laterally as the trench the pipe is in fills w/ water)

Question 19

What distributes the weight from floor joists to the ground?

Answer 19

Floor joists –> Foundation –> Footings –> Ground

Question 20

What is required when an electric water heater is installed at the second story?

Answer 20

A sealed catch pan, with attached drain

Question 21

Chimney’s Leaning Above Roofline:

Answer 21

Most likely tall, unlined chimneys venting an oil-fired appliance.

Sulphur from exhaust gases condenses and forms sulphuric acid, causing mortar to deteriorate.

Wind-driven rain causes mortar to swell due to moisture, and the chimney leans to the leeward side.

Question 22

Air return outside a room with supply:

Answer 22

Requires a 3/4” gap at the bottom of the door to allow proper circulation.

Without it, the room can become pressurized and will not heat/cool because it can’t accept any more air.