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WorksheetsRepair and Maintenance
Total questions: 37
Worksheet time: 19mins
What are the two main reasons to Paint External Joinery e.g. Doors, Windows, Fascia's and Soffits
To protect the wood
To seal the moisture into the wood
To hide the grain of the wood
For Decorative purposes
Name three characteristics of Timber Preservatives
Helps Timber to last longer
It does not need to be covered by COSHH
It prevents future fungal or insect attacks
Can be used without any PPE
It Penetrates deep into timber
which of these are methods of applying Timber Preservatives to Wood
Vacuum Impregnated
Applied with a Brush
Sprayed on
Dipped in a Tank of preservatives
Applied with a Roller
If there were visible signs of insect attack on a Door Standard what would be the best course of action bearing in mind this is a repair and maintenance question?
Rip everything out and fit new standards.
Fill all the visible holes and paint over to suffocate the Larva, Pupa.
Spray insecticide every week until there are no visible signs of insect attack left
Cut out timber beyond last sign of attack, Splice in a new piece of treated timber, Spray the existing timber with preservative then dispose of all infected timber.
Which of the following would be the best course of action to eradicate dry rot from ground floor joists?
1. Remove water source
2. Cut out all infected timber 1 metre past last sign of decay
3. Chemical wash brickwork and treat all existing timber with preservative
4. Fit new preservative treated timber wall plates and joists and flooring
5. Make sure solum ventilation is good
6. Remove all infected timber from property carefully and dispose of in a registered skip
1. Cut out all rotten timber
2. Fit new Joists and flooring
3. Leave all offcuts in solum so property is not damaged taking them out
4. Spray preservative on top of flooring
5. Make sure air bricks are covered up to stop water getting in
6. Let customer know they can't use the room for several days due to the smell from preservative
1. Seal off room so there is no ventilation and no risk of hyphae getting out
2. Spray preservative over all fruiting bodies to kill them off
3. Cut out infected timber in whole room
4. Fit new timber
5. Unseal the room and remove all protective coverings
6. Take all the offcuts and leave them in the garden
What is this discolouration on timber known as?
Big Sap Stain
Blue Mould Stain
Big Sap
Blue Sap Stain
What effect does blue sap stain colouring have on timber?(select all that apply)
Microscopic Fungi that commonly infects only the sapwood of trees
Leaves a bluish / greyish colour to timber
It doesn't cause any decay to the timber
It does not reduce the strength of the timber
Which is the correct order of the life cycle of the common ground beetle?
Stage 1. Eggs turn to Larva
Stage 2, Larva turns to Pupa
Stage 3. Adult Beetle finds a mate
4. Eggs are Laid
Stage1. Eggs Laid
Stage 2. Eggs turn to Larva
Stage 3. Larva turns to Pupa
Stage 4. Adult Beetle finds a mate
Stage 1. Larva turns to Pupa
Stage 2. Adult Beetle finds a mate
Stage 3. Eggs Laid
Stage 4. Eggs turn to Larva
Name a visible characteristic of Dry Rot ?
-------- Body
(a)
Name a visible characteristic of Dry Rot?
Musky -----
(a)
Name a visible characteristic of Dry Rot?
Cuboidal --------
(a)
Name a visible characteristic of Dry Rot?
H---ae
(a)
Name a visible characteristic of Dry Rot?
My---ium
(a)
Name a visible characteristic of Insect Attack?
----- (dust)
(a)
Name a visible characteristic of Insect Attack?
----- in timber
(a)
Name a visible characteristic of Insect Attack?
------- flying around
(a)
Name a visible characteristic of Insect Attack?
---- insects lying around
(a)
What does "Seasoning Timber" mean ?
The reduction in the moisture content of timber to suit where the timber is to be used
Checking to ensure there are enough minerals within the timber
Ensuring that the Tree is cut down within the correct season
Checking the Salt and Pepper content of timber
Name a natural method of seasoning Timber ?
--- dried
(a)
Name a mechanical method of seasoning Timber ?
---- dried
(a)
What would be a suitable moisture content for internal joinery where there is central heating?
20-30%
15-20%
1-7%
10-12%
Stress or Strength grading of Structural Timber is marked by what symbols ?
C16 & C24
C10 & C15
C25 & C30
C10 &C30
Which groups of Timbers are Softwoods?(select all that apply)
Balsa Wood & Maple
Western Red Cedar & Larch
Redwood &
Douglas Fir
Ash & Beech
select all groups of Timbers which are Hardwoods ?
Oak & Mahogany
Beech & Balsa
Ash & Maple
Western Red Cedar & Larch
Softwoods have open grain and are Pines or Cedar trees
Hardwoods are Broad Leaved trees.
What is the main difference between them?
Hardwoods are Harder and Softwoods are Softer
They have different Cellular Structures.
Softwoods-Tracheids
Hardwoods- Fibres and Vessels
Hardwoods are Dark Wood and Softwoods are Lighter wood
On Formwork a --------- is placed at the top to prevent outward movement and keep the formwork parallel.
(a)
On Formwork a ------ which can be made from timber, plastic or steel stops the inward movement of formwork and keeps it parallel
(a)
On Formwork a ----- is a diagonal support to to prevent movement and can hold formwork plumb
(a)
All the supporting props and braces below Formwork is known as the ----- ----
(a)
On formwork a block or strip of timber which is used to support the edge of the formwork is known as a what?
Stretcher
Spacer
Brace
Cleat
To make formwork easier to adjust and strike there are two pieces of timber placed facing in opposite directions known as?
Flooding Wedges
Felting Wedges
Floating Wedges
Folding Wedges
The process of decomposition of timber due to bacteria or fungi attack is known as Timber ----y
(a)
The use of timber preservatives can reduce the risk of future attacks of insect or
----- on timber
(a)
Select the best definition of Insect attack on timber:
The grub of an adult beetle which lives inside the timber and it eats and destroys the timber over a period of several years
An adult beetle that continues to eat holes into timber leaving the surface full of holes
A worm that burrows into timber and makes lots of holes and makes wood fragile
Overlapping two pieces of timber and attaching them together with glue is known as a ------
(a)
A piece of timber or sheet material used to cover a hole in something is known as a -----
(a)
Making sure all external joinery is kept in good condition by painting and decorating or repairing is known as?
A pain in the ----
Rotten
Not My Job
Maintenance
