Exterior Inspection Section#3 Exterior Structures Quiz#3

You should have finished Study Session 2 and Quick Quiz 2 before starting this Study Session. This Study Session deals with beams, joists, floors, roof structures, and skirting on porches, decks and balconies.

The estimated completion time is 90 minutes.

Objectives
At the end of this study session, you should be able to:

• List four common beam problems.
• State the amount of end bearing required for beams and joists.
• List seven common joist problems.
• List three causes of problems with cantilevered joists.
• List seven common flooring problems.
• List two common roof structure problems.
• List four common skirting problems. 

• Question 1

  Needs Grading

  	Describe the proper way to flash a ledgerboard installed over siding.
  	Selected Answer: The proper ledger construction detail (when installed over a wood frame wall with siding) is to install a flashing that extends up behind the siding and out over the top of the ledger.  Correct Answer:   Flashing extends from under the siding, over the top of the ledgerboard, and down. Response Feedback: [None Given]

• Question 2

  Needs Grading

  	How might paint be able to indicate that a beam has slipped out of its pocket?
  	Selected Answer: The beam end may not have paint on it or may be a different color because of less exposure to sun.  Correct Answer:   If the beam has been painted and there are unpainted parts visible at the supports, this may indicate movement of the beam. Response Feedback: [None Given]

• Question 3

  Needs Grading

  	It?s a good idea to have a _____ inch step up into the house from the porch, deck, or patio floor. Why is this?
  	Selected Answer: 6. Where deck, porch or balcony floor is flush with the door threshold, water and snow are likely to get into the house around the bottom of the door.  Correct Answer:   6-inch. This reduces the chance of snow or water getting into the structure under the bottom of the door. Response Feedback: [None Given]

• Question 4

  Needs Grading

  	List four potential causes of a sagging beam.
  	Selected Answer: 1. Undersized or overspanned 2. Loading is greater than was designed for 3. Rot, mechanical damage, holes or notching has weakened the beam 4. A column, often near a midpoint, has been removed Correct Answer: They are undersized or overspanned. Loading is greater than was designed for. Rot, mechanical damage, holes or notching has weakened the beam. A column has been removed. Response Feedback: [None Given]

• Question 5

  Needs Grading

  	List two advantages to installing joists with hangers as opposed to toe-nailing them to beams.
  	Selected Answer: 1. More secure.  2. The end of the joist is better restrained from twisting or other lateral movement Correct Answer:   There is more protection against uplift and twisting with a joist hanger. Response Feedback: [None Given]

• Question 6

  Needs Grading

  	List two inspection techniques that you would use to check for sagging joists.
  	Selected Answer: 1. Scan the deck or floor surface with your eye at deck level. 2. Bounce while standing on the deck.  Correct Answer:   Bounce on the deck Scan the deck with your eye at deck level Response Feedback: [None Given]

• Question 7

  Needs Grading

  	List two ways to attach a ledgerboard to a wood-frame structure.
  	Selected Answer: 1. Lag bolts every 16 to 24 inches 2. Nails every 16 to 24 inches Correct Answer:   Lag bolts every 24 inches or multiple nails every 16 to 24 inches. Response Feedback: [None Given]

• Question 8

  Needs Grading

  	On many old house porches, the joints in the floor boards run perpendicular to the house wall. Why is this so?
  	Selected Answer: water would run off the porch better Correct Answer:   To allow the water to drain to the outside edge. Response Feedback: [None Given]

• Question 9

  Needs Grading

  	What are two reasons that a porch roof structure may move or settle?
  	Selected Answer: 1. Settling or heaving 2. Moisture damage 3. Poor installation Correct Answer:   Moisture damage Poor installation Response Feedback: [None Given]

• Question 10

  Needs Grading

  	What is the biggest problem with cantilevered decks?
  	Selected Answer: The biggest single problem with cantilevered decks is the difficulty in maintaining a weather-tight joint where the joints pass through the house wall.  Correct Answer:   Rot is found where the joists penetrate the wall. Response Feedback: [None Given]

• Question 11

  Needs Grading

  	What is the requirement for beam and bearing?
  	Selected Answer: Transferring loads from joists to columns or wall Correct Answer:   3-1/2 inches Response Feedback: [None Given]

• Question 12

  Needs Grading

  	Where do deck boards often rot first?
  	Selected Answer: At end grain of butted deck boards Correct Answer:   At butted ends over supports. Response Feedback: [None Given]

• Question 13

  Needs Grading

  	Why are plywood or waferboard sheets poor choices for porch or deck flooring?
  	Selected Answer: They are sheet goods, they don't allow water to drain through quickly.  Correct Answer:   They absorb water readily and rot. Response Feedback: [None Given]

• Question 14

  Needs Grading

  	Why is it a good idea to space out the members of a built-up beam?
  	Selected Answer: This space provides ventilation allowing for quick drying after the wood gets wet.  This space ensures water can flow freely between adjacent beams Correct Answer:   To avoid trapping water between the individual pieces of wood. Response Feedback: [None Given]

• Question 15

  Needs Grading

  	Why should deck boards be installed crown up?
  	Selected Answer: Crown down installation would collect and accumulate water Correct Answer:   To prevent cupping that would hold water. Response Feedback: [None Given]

• Question 16

  Needs Grading

  	Why shouldn?t you align a beam with a gutter to check for sag?
  	Selected Answer: It is hard to tell sagging from side view Correct Answer:   Gutters slope so they always look off level. Response Feedback: [None Given]

• Question 17

  0 out of 0 points

  	Joists are usually spaced _____ or _____ inches on centre. (Insert your numbers separated by a comma.)
  	Selected Answer:  16,24 Correct Answer: Evaluation Method Correct Answer Case Sensitivity Exact Match 16, 24 Exact Match 16,24 Response Feedback: Good work!!

• Question 18

  0 out of 0 points

  	The metal brackets used to support joists are called _____ _____. (2 words)
  	Selected Answer:  joist hangers Correct Answer: Evaluation Method Correct Answer Case Sensitivity Exact Match Joist hangers Response Feedback: Good work!!

• Question 19

  0 out of 0 points

  	Beams should be mechanically fastened to their supporting members.
  	Selected Answer:  False Answers:  True False Response Feedback: That's incorrect.