Wood

Question 1

When specifying a rot resistant wood, what exact specification do you have to write to get the rot resistance?

Answer 1

The Heartwood

Question 2

Which grows faster, springwood or summerwood?

Answer 2

Springwood

Question 3

Which is stronger, springwood or summerwood?

Answer 3

Summerwood

Question 4

What type of wood is typically used for trim?

Answer 4

Hardwood

Question 5

What type of trees produce ‘hardwood’?

Answer 5

Broadleaf trees - deciduous trees

Question 6

What type of trees produce ‘softwood’?

Answer 6

Pine trees, evergreen and conifer trees

Question 7

Which of the following has a higher structural quality?

MC15 or MC19

Answer 7

MC15

Question 8

What does MC15 and MC19 mean?

Answer 8

Moisture Content

15 = 15%
19 = 19%

Less moisture = stronger tree

Question 9

What’s the formula for the moisture content?

Answer 9

((Wwet - Wdry) / Wdry) * 100

Question 10

What is the process by which the bound water in the cells is released?

Answer 10

Seasoning

Question 11

How does wood shrink?

Answer 11

Tangentially to the grain

Question 12

What is the most expensive type of wood per board foot?

Answer 12

Glulam

Question 13

What type of engineered wood can make a large and strong panel?

Answer 13

CLT - cross laminated timber

Question 14

Which has longer strands and which has shorter strands:

1. LSL (Laminated Strand Lumber)
2. OSL (Oriented Strand Lumber)

Answer 14

Longer = LSL
Shorter = OSL

Question 15

What makes Parallel Strand Lumber strong?

Answer 15

The strips being laid in the same direction

Question 16

What is the calculation to determine ‘board feet’?

Answer 16

Nominal Dim W x Nominal Dim D x Length / 12

Question 17

Rank the following from largest strands to smallest strands:

1. Particle Board
2. Fiber Board
3. Oriented Strand Board

Answer 17

Largest - OSB
Middle - Particle
Smallest - Fiber

Question 18

What type of non-veneer panel is MDF?

Answer 18

Fiberboard

Question 19

A wood panel has a rating of 32/16. What does this mean?

Answer 19

It can span 32” as a roof board and 16” as a floor board

Question 20

What are the 2 types of wood treatment that has been phased out for being toxic?

Answer 20

Creosote and CCA (Chromated Copper Arsenic)

Question 21

What type of wood treatment is used on telephone poles?

Answer 21

Pentachlorophenol

Remember ‘Penta’

Question 22

What type of treatment should be used for above ground, ground contact and/or freshwater immersion?

Answer 22

ACQ and CBA

Alkaline Copper Quaternary
Copper Boron Azole

THINK COPPER

Question 23

What types of fasteners should NEVER be used with ACQ and CBA treatment?

Answer 23

Steel or aluminum fasteners due to galvanic action.

Question 24

What types of fasteners are allowed to be used with ACQ and CBA treatment?

Answer 24

Stainless steel, zinc galvanized and copper alloy

Question 25

What types of treatments should be used for termite protection?

Answer 25

Borons SBX - Sodium Borate DOT - Disodium Octoborate Tetrahydrate

Question 26

Which wood treatment can be painted, be below ground and be installed with steel fastners?

Answer 26

Carbon Based PTI and Micronized Copper

Question 27

Which are the most toxic wood treatments?

Answer 27

Creosote and CCA

Question 28

Which is limited to above ground use?

Answer 28

SBX and DOT

Question 29

Which is most corrosive to steel fasteners?

Answer 29

ACQ, CBA and CCA

Question 30

Which can't be painted?

Answer 30

Creosote and Penta.....

Question 31

Which woods are naturally termite resistant?

Answer 31

Eastern Red Cedar and Redwood

Question 32

What type of nails have a flat head? Common Nail Brad Finish Nail Sinker Nail Casing Nail Box Nail Hardened Concrete Nail Roof Nail

Answer 32

Common Nail - because its common Box Nail - why have round on a box Sinker Nail - flush install, no filling Roofing Nail - we don't want VALLEYS on our roof do we?

Question 33

What type of nails have a tiny head? Common Nail Brad Finish Nail Sinker Nail Casing Nail Box Nail Hardened Concrete Nail Roof Nail

Answer 33

Brad - so does he Finish Nail - to fill with the smallest size Casing Nail - see above

Question 34

What is the stronger nail connection?

Answer 34

Face nail

Question 35

What is the difference between a carriage bolt and a machine bolt?

Answer 35

Machine bolts need wrenches on both sides. Carriage bolts catch on the wood so a wrench is only required on one side

Question 36

In which scenario is fire stopping required? Balloon Framing or Platform Framing?

Answer 36

Balloon Framing