timber 2

Question 1

advantages of timber in fire compared to other materials?

Answer 1

Maintains its strength

Question 2

Disadvantages of timber exposed to fire?

Answer 2

1. flammable
2. contributes to spread of fire
3. releases heat

Question 3

What is pyrolysis?

Answer 3

combustion process

Question 4

What are the three zones in the flow diagram when heat input on timber?

Answer 4

1. unaffected timber
2. Pyrolysis zone
3. Char zone

Question 5

How is timber protected from fire?

Answer 5

cladding
intumescent paints
flame retarders

Question 6

how does flame retarders work?

Answer 6

change decomposition….reduce temp… increasing thickness of char

Question 7

types of cladding for timber protection?

Answer 7

timber panels
rock fibre batts
gypsum plasterboard