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

prevent harm to employees at work

promote good practices in health and safety management.

create profit for the department

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:

safety glasses (even if you wear prescription glasses, you must still use safety glasses)

The following retaining walls require a building consent, and may also require an engineer’s design:

walls lower than 1.5m but carrying extra loading on top, such as a driveway, a building or a steeply sloping bank.

walls lower than 1.2m but carrying extra loading on top, such as a driveway, a building or a steeply sloping bank.

For any construction job you carry out, it’s important to:

select and use appropriate personal protective equipment

clean the work area and dispose of waste

clean, store and maintain tools correctly.

trust your judgment for levels and heights.

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:

the construction method being used;

the design drawings and specifications;

the finished height and length of the wall;

any allowance for wastage, for example, if a material is only available in a fixed length.

the number of people working on the project;

Materials commonly used in timber post and rail walls include:

Bracing timber, pegs, and nails.

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

instructions for constructing the wall

amount each course needs to be stepped back.

The maximum height for a crib wall depends on several factors. These factors include:

the type of ground that needs containing

the efficiency of site drainage.

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

Slope, soil classification,structures above

Slopes and ropes, structures above.

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

Vegetation, water run off, waste, noise

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

Waste, vegetation, old prams and trams

Excavation work should not occur unless?

Dial B 4 U Dig and check your insurance

Dial B 4 U Dig and hope for the best

Dial B 4 U Dig and kick the cat.

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

No ratio required if it is not inspected

Tick the differences between embarkment and excavation

Supporting structure replaces existing ground support of soil increase: Excavation

Supporting structure erected as the height of soil increase: Embarkment

Supporting structure erected as the height of soil increase: Excavation

Supporting structure replaces existing ground support of soil increase: Embarkment

Retaining walls Yr12 B&C Unit 2

11th - 12th Grade

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53 Qs

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Practice Problem

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Hard

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Retaining walls Yr12 B&C Unit 2

53 questions

Name three types of retaining walls.

Name three types of retaining wall materials.

What does batter mean when working with retaining walls?

What does course mean when working with retaining walls?

What does field drain mean when working with retaining walls?

What does filter fabric mean when working with retaining walls?

What does footing mean when working with retaining walls?

What does granular fill mean when working with retaining walls?

What does hydrostatic pressure mean when working with retaining walls?

What does a low retaining wall mean when working with retaining walls?

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