H-10 Task 1

Question 1

what is the basic purpose of a deck?

Answer 1

Provide a level outdoor livingspace

Question 2

what is a deck that isn’t provided with a roof?

Answer 2

referred to as a sundeck

Question 3

when a deck is elevated to at least one storey above ground it is called?

Answer 3

referred to as a balcony

Question 4

what is a deck called with a roof and part of an entrance?

Answer 4

referred to as a porch

Question 5

what is another term for porch?

Answer 5

veranda, typically is much longer than deep and will run the full length of the building face

Question 6

other than being attached to a building, what else can a deck be with the building system?

Answer 6

A deck can be apart of the buildings roof system, example is a garage with a flat roof and use that area as a deck

the deck has two purposes, act as a deck and as a roof

Question 7

BC Building Code require railings when the deck is elevated more than?

Answer 7

600mm above adjacent surfaces

Question 8

decks need to be built strong enough to withstand?

Answer 8

either floor loads for living areas or local snow loads, which ever is greater

Question 9

what are the two reasons decks should be built strong and securely fastened to the main structure?

Answer 9

Been known to collapse when used as a venue for a large group, and to separate when impacted by a large snow load (snow sliding off a metal roof)

Question 10

what are a decks structural components?

Answer 10

foundation, posts, beams, and floor joists

Question 11

what are common materials for decking construction?

what about railings materials?

Answer 11

Pressure treated preserved wood, naturally durable wood such as cedar, and wood-plastic composites

wood, metal, and glass

Question 12

how much lower are decks built from the floor level inside the building?
and why?

Answer 12

150mm lower than the floor they serve, this is done to prevent water seepage into the interior living space due to ice damming on the deck surface

Question 13

what are typical foundations for decks?

what the posts will sit on

Answer 13

Concrete pilings, pad blocks, or strip footings

Question 14

what size are common dimensional lumber posts?

Answer 14

most common are 6x6 (140mm x 140mm)

Question 15

what are the dimensional sizes for concrete columns? rectangular and round

dimensional size for steel posts?

Answer 15

200mm x 200mm for rectangular, 230mm diameter round

73mm diameter steel posts

Question 16

how can you reduce clear spans of structural members?

Beams and joists

Answer 16

by slightly cantilevering the beams and joists

Question 17

List three ways the connections for deck joists and beams can be made?

Answer 17

by using fasteners, connecting brackets, and hangers

brackets and hangers are galvanized
galvanized nails or corrosion resistant screws must be used

Question 18

how can you attach the deck to the building?

Answer 18

fastening a ledger board or using joist hangers.

use lag screws, nails, or solid wall fasteners for attaching ledgers

Question 19

what is the concern when using a ledger without spacers against the house wall?

Answer 19

trapped moisture leading to rot (unless protected from moisture by flashing)

Question 20

why can’t you support (attach) a deck to a cantilevered floor rim joist?

Answer 20

Rim joist is usually only supported by nails into the ends of floor joists and is not strong enough to hang a deck from

Question 21

what are the dimensional lumber used for decking?

Answer 21

5/4” radius edge-treated lumber, or 2x4 cedar

Question 22

what are advantages of Wood Plastic Composite decking?

Answer 22

they won’t twist, check, crack, splinter, or rot

Question 23

what is the gap you provide between decking boards?

Answer 23

3-6mm provides adequate air movement and drainage

Question 24

how long should decking fasteners be?

Answer 24

long enough to penetrate the joists by at least the decking thickness

Question 25

for watertight decks acting as a roof, how are the posts of handrails attached?

Answer 25

should be face attached instead of top mounted to maintain watertightness

Question 26

why is anchorage important for high level decks?

Answer 26

because of possible wind uplift