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Retaining walls Yr12 B&C Unit 2

Total questions: 53

Worksheet time: 36mins

Name
Class
Date
1.
Name three types of retaining walls.
4 lines
2.
Name three types of retaining wall materials.
4 lines
3.
What does batter mean when working with retaining walls?
4 lines
4.
What does course mean when working with retaining walls?
4 lines
5.
What does field drain mean when working with retaining walls?
4 lines
6.
What does filter fabric mean when working with retaining walls?
4 lines
7.
What does footing mean when working with retaining walls?
4 lines
8.
What does granular fill mean when working with retaining walls?
4 lines
9.
What does hydrostatic pressure mean when working with retaining walls?
4 lines
10.
What does a low retaining wall mean when working with retaining walls?
4 lines
11.
What does plant mean when working with retaining walls?
4 lines
12.
What does weep holes mean when working with retaining walls?
4 lines
13.

The Health and Safety at Work Act 2015 is designed to:

a)

prevent harm to employees at work

b)

promote good practices in health and safety management.

c)

create profit for the department

d)

cause legal action

e)

save resources

14.
One way you can help ensure your own safety is to use personal protection equipment (PPE). For this project you will likely need to use:
a)
hearing protection
b)
safety boots or covered shoes
c)
gloves
d)
dust masks
e)
safety glasses (even if you wear prescription glasses, you must still use safety glasses)
15.

Before using a machine or portable power tool, check to see if all cords are in (a)   condition.

16.
When working outside always ensure a residual current device (RCD) is used, no matter what the weather conditions are.
a)
true
b)
false
17.

Retaining walls perform heavy and important work. As well as holding up unstable banks, retaining walls can (a)   a sloping section to provide a level garden, lawn or paving area.

18.
The following retaining walls require a building consent, and may also require an engineer’s design:
a)
walls over 1.5m high
b)
walls lower than 1.5m but carrying extra loading on top, such as a driveway, a building or a steeply sloping bank.
c)
walls over 1.0m high
d)
walls over 1.8m high
e)
walls lower than 1.2m but carrying extra loading on top, such as a driveway, a building or a steeply sloping bank.
19.
For any construction job you carry out, it’s important to:
a)
select and use appropriate personal protective equipment
b)
use tools correctly and safely
c)
clean the work area and dispose of waste
d)
 clean, store and maintain tools correctly.
e)
trust your judgment for levels and heights.
20.

For any product or tool you use, make sure you read and understand any manufacturer’s _____________that come with it before you start using it.

a)

Instructions

b)

pamflets

c)

brochures

d)

advertisements

e)

recommendations

21.
An important consideration when designing a retaining wall is to slope the posts towards the top of the bank.
a)
True
b)
False
22.
This force that causes the wall to collapse, is often referred to as a ‘blowout’.
a)
True
b)
False
23.
Three key aspects when planning and building retaining walls.
a)
Good preparation
b)
Good foundations
c)
Good drainage
d)
Good looks
e)
Good profits
24.
You will need to use the drawings and specifications your teacher gives you to calculate the quantity of materials needed for the wall you’re building. The types and quantities of materials will depend on:
a)
the construction method being used;
b)
the design drawings and specifications;
c)
the finished height and length of the wall;
d)
any allowance for wastage, for example, if a material is only available in a fixed length.
e)
the number of people working on the project;
25.

Poles or posts are embedded in the ground to act as a _______ and provide stability to prevent overturning,

a)

cantilever

b)

blanket

c)

drain

d)

sponge

e)

lever

26.

________ rails are then fixed to the inside of the posts.

a)

Horizontal

b)

Vertical

c)

Colourful

d)

Apron

e)

Lego

27.
Materials commonly used in timber post and rail walls include:
a)
H5 posts
b)
H4 rails
c)
Plastic drain coil
d)
Geotextile fabric
e)
Bracing timber, pegs, and nails.
28.
Posts for a low retaining wall must go into the ground 100mm for every 100mm above ground, up to a wall 1.2m high.
a)
True
b)
False
29.
Horizontal rails are treated to H4, and can be half rounds, 50mm timber plank, tongue and groove, or a combination of these.
a)
True
b)
False
30.
Precast concrete block walls are constructed on a compacted base course or a concrete foundation.
a)
True
b)
False
31.
No matter how sturdy the upper part of a wall is, there is nothing stopping the wall from collapsing if the footings or foundations are weak.
a)
True
b)
False
32.
Drainage on any type of retaining wall should use slotted drain coil or weep holes at the base of the wall. Free draining gravel is then placed on top to within 300mm of the top of the wall.
a)
True
b)
False
33.

Because each type of block is different, it is very important to read and follow the manufacturer’s instructions. These instructions should include:

a)

foundation type

b)

instructions for constructing the wall

c)

maximum height

d)

amount each course needs to be stepped back.

e)

colour of blocks.

34.
Crib walls are a type of gravity wall that can be used for low and high retaining walls.
a)
True
b)
False
35.
The maximum height for a crib wall depends on several factors. These factors include:
a)
the type of ground that needs containing
b)
type of backfill used
c)
the efficiency of site drainage.
d)
the budget
e)
how you feel about it.
36.
Mortared stone walls rely on their weight and a low height to width ratio for stability against overturning or horizontal slipping.
a)
True
b)
False
37.

Stone walls should be designed and built by _______ designers and contractors.

a)

experienced

b)

expensive

c)

dodgy

d)

qualified

e)

apprentice

38.

Poured concrete or precast concrete block retaining walls are stabilised by using a wide ______ shaped footing. The footings are crucial to the strength of the wall.

a)

T or L

b)

P or T

c)

TNT

d)

We and Tee

e)

S

39.
Poured concrete or precast concrete block retaining walls need steel reinforcing and must be built to Building Code standard, even if a building consent isn’t required.
a)
True
b)
False
40.

3 keys areas that may influence a retaining wall construction might be:

a)

Slope, soil classification,structures above

b)

Whats for lunch

c)

Slopes and ropes, structures above.

d)

Height, Drainage, builders.

41.

Prior to any work what may be environmental issues that should be addressed?

a)

Dirt, dust, water run off, rusty gates and rubble

b)

Waste, vegetation, old prams and trams

c)

smoko

d)

Vegetation, water run off, waste, noise

42.

Excavation work should not occur unless?

a)

Dial B 4 V Dig

b)

Dial B 4 U Dig and check your insurance

c)

Dial B 4 U Dig and hope for the best

d)

Dial B 4 U Dig and kick the cat.

43.

What is the mortar ratio for brickwork in a retaining wall?

a)

5:1 + plasticizer

b)

6:1 + waterproofer

c)

4:1 + waterproofer

d)

No ratio required if it is not inspected

44.

Waterproofing components may include?

a)

Sand and lime

b)

water

c)

mortar

d)

None of the above

45.

When are engineers computations/Drawings required?

a)

150mm

b)

1.5m

c)

1.2m

d)

15000mm

46.

What connects a brick/block wall to the concrete footing?

a)

Bondcrete

b)

Deformed bars

c)

Tree roots

d)

Trench mesh

47.

What colour is a green $2 Note

a)

Blue

b)

Dark red

c)

Green

d)

Orange

48.

What was Sir Donald Bradman’s batting average

a)

99.94

b)

99

c)

98

d)

100

49.

Which food product rich in vitamin B did Cyril Callister develop

a)

4 n 20

b)

Vegemite

c)

Barocca

d)

steak

50.

Which is the largest Australian State in terms of area

a)

NSW

b)

NT

c)

Western Australia

d)

Queensland

51.

Tick the differences between embarkment and excavation

a)

Supporting structure erected as the height of soil increase: Embarkment

b)

Supporting structure erected as the height of soil increase: Excavation

c)

Supporting structure replaces existing ground support of soil increase: Embarkment

d)

Supporting structure replaces existing ground support of soil increase: Excavation

52.

Retaining wall will fail due to..

a)

Overturning

b)

Sliding

c)

settlement

d)

tournament

53.

How to prevent high-level water in soil?

a)

provide adequate financial strength

b)

provide adequate control system

c)

provide adequate drainage system

d)

provide adequate support system

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