Samples

Erect and dismantle restricted height scaffolding (CPCCCM2008B)


ASSESSMENT TASK 1

  1. Confirming the scope of works to be carried out is an essential requirement before commencing any project. Where could you find relevant instructions and information regarding work information?

WHS induction or Site induction

 

  1. List 4 Australian Standards that apply to restricted height scaffolding.

AS/NZS4576 Guidelines for scaffolding

AS/NZS1576: Part 1: Scaffolding – General Requirements

AS1577: Scaffold Planks

AS/NZS1892.1: Portable Ladders – Metal

AS/NZS1892.3: Portable Ladders – Reinforced Plastic

 

  1. Does the supplier of prefabricated scaffolding need to provide written information about the system?

Yes, it is important for the supplier to provide written information about the system.

 

  1. In relation to scaffolding, who has obligations for Workplace Safety under the Occupational Health and Safety Act?

Both employee and employer

 

  1. A SWMS must be prepared for high risk construction work before the work starts. What 4 components must the SWMS include?
  • High risk is expected in detailing of the work.
  • Risk factors can be reduced by implementation of safety measures.
  • Ladder wise detailing of risk controlling factors.
  • Safety measures must be taken.

 

  1. What PPE must you wear when using a hazardous substance? How would you determine this?

Pressure-demand, full-face piece SCBA or pressure-demand supplied-air respirator with escape SCBA.

Chemical-resistant clothing [overalls and long-sleeved hooded jacket, one- or two-piece chemical splash suit, disposable chemical-resistant one-piece suit].

Inner and outer chemical-resistant gloves.

Chemical-resistant safety boots/shoes.

Hard hat.

Two-way radio communications.

OPTIONAL: Coveralls, Disposable boot covers, Face shield, long cotton underwear

 

  1. Outline 6 points you should consider before you attempt any lifting or handling operation.
  • Assess what needs to be done
  • Decide what can be lifted safely
  • Identify ways of reducing the risk
  • Rearrange the task
  • Assess the nature of the load
  • Assess the work environment

 

  1. What are the minimum clearance requirements when erecting scaffolding near powerlines? Write your answer on the diagram in the green spaces provided.

 

  1. How can a scaffold built alongside a road be protected from traffic damage? You must list 4 examples.
  • Traffic Controller
  • Signages
  • Barricades
  • Set up another way for traffic

 

  1. What tools are required to erect scaffolding? List 5.
  • Podgers
  • Level
  • Claw Hammer
  • Sockets sets
  • Safety harness and lanyard

 

  1. How can you check the accuracy of a spirit level? Give 3 examples.
  • Two spirit levels must be put together so that one can compare them.
  • After that bubble’s position can be read out by looking at the flask. The flask should be rotated at the level of 180°. This process will be repeated twice and if the position of the bubble is same in both the readings then we can say the level is accurate.
  • After the process is done, it is ready to dispatch and we can send it to the manufacturer.

 

  1. How would you determine the type and number of scaffold components you require?

Each and every working platform is determined by weighing or loading and can be done with the help of scaffolding. The actual materials or tools itself determines the load on a scaffold.

 

  1. Provide a brief description of the following footing components.

Component

Description

Sole board

Part and parcel of a footing system is known as sole board. Levelled surface can be achieved by proper digging. Smooth grounding levels have a long life.  Sole boards give proper support to the soft grounds.

 

Screw jack

Leg of a screw or a levelled jack is said to be a screw jack. Scaffolding platforms are given support by screw jacks. Base plate of 4″ X 4″ is fixed with the jack. Wood mud sill and a base plate is joined together with a nail or a screw.

 

Caster

Instead of a base plate, casters are used in mobile scaffolding. These type of scaffoldings generally have screw jacks in it. Casters can also be used with scaffolds is necessary.

 

 

  1. Provide a brief description of the following framing components.

Component

Description

Frame

Vertical members represented by a prefabricated assembly indicating width and height are known as frame scaffold. It is also known as Brickie’s scaffold and Walk Thru scaffold.

 

Standard

Vertical heights provided to the metal tubes are known as standards.  Proprietary modular and a wedge connector help to connect a standard to form a scaffold.

 

Brace

Brace is used to provide rigidness to a scaffold. One tube of a scaffold is fixed on another to give proper support. Diagonally joined braces are known as cross bracing.

 

Face brace

Two metal poles connected from the middle are known as face braces. It has a movement like a scissor. So, another name of face brace is scissor brace. These are vertically fixed to the tube.

 

Tube

Designing and shaping to a scaffold is given by a tube. Wide variety gives different configurations to a tube and a coupler.

 

Coupler

Tubes and scaffolds are joined together and these are joined by a process known as coupler. Positions like ladder can be tied together to frame a scaffold.

 

Ledger

Standing tubes parallel to a building is known as ledger.  Ledgers are 48mm diameter tubes with a cast wedge fixing device at each end. Length is given by a ledger.

 

Transom

Standards connected through their widths are known as transom.

 

Joining pin

Joining pins are used to give height to a scaffold. More than one frame or a standard is joined together to form a scaffold.

 

 

  1. Why might a project have an environmental plan?

A project with a proper environmental plan leads to healthier and a safer environment which gives a better sense to a working platform. Rules must be followed once a plan is made.

 

  1. Modular systems are simpler and faster to set up than other types of scaffold. Which trades are they most commonly used by? List 4.
  • Plaster
  • Painters
  • Caulkers
  • Tiler

  1. List the 3 most common trades which use a mobile scaffold.
  • Caulker
  • Plaster trades
  • Masonry trades

  1. What are the maximum loads for bays?

For light bay it is 225 kg

For medium bay it is 450 kg

For heavy bay it is 675 kg

 

  1. Describe each of the access and egress factors to be considered consider when designing a scaffold system to be used on site.

Factor

Description

Vehicle access

Vehicle interactions are must to keep a proper check around the whole workplace, where a scaffolding process is going on.

Storage

Proper storage capacities should be given to the workers so that they can get enough storage to store their scaffolding equipments. 

Safety

Safety measures must be taken. Proper inspection must be done.

Job site

Environmental check should be taken before starting a work.

 

  1. Label the components of the framed scaffolding. Use the list of words below.

Handrail

Platform

Sole board

Toe board

Guardrail post

Brace

Base plate

Mid-rail

Frame
 

 

  1. Would you mix components of two prefabricated systems in one scaffold without a supplier’s or engineer’s consent? If scaffolding is to be modified or altered, where is the scheduling documented?

It is not allowed.

 

  1. List the steps for erecting a scaffold in the correct order.

Step

Procedure

 

8

 

Diagonals must be determined to see whether the base is in square shape or not.

13

 

 

It is important for a ladder to have gate panels.

1

While preparing a scaffold, proper and safe tools and equipments must be there.

 

4

Screw jacks must be fixed to a scaffold so that a smooth surface must be given to a sole board.

 

18

 

 

Proper inspection must be done to ensure whether a scaffold is fully complete or not.

15

Ladder and a tube must be attached together carefully. It should be tightly joined so that no mishappening arises. 

 

12

 

 

Proper protection must be provided to the edges. 

 

7

 

Pins should be safely hooked with braces and frames.

17

 

 

The whole process will be continued until rest of the bays are finished.

10

Boards must be kept on one another so that a proper level is maintained.

 

3

 

 

Sole board must be jacked from the middle with a screw.

6

 

 

Place the frames on the screw jacks.

 

16

 

Erect the second bay in the same way as the first. Check and adjust for level across both bays.

5

 

 

Measure the distance between the screw jacks to ensure the frames can be placed on top of them easily.

11

 

Add the remaining boards to complete the working platform, making sure that the maximum gap between the boards is 10 mm.

2

Put the first sole board down no more than 200 mm away from the working surface and make sure it’s level. Dig the ground out if required. Place the next sole boards on the ground, ensuring they are the correct distance apart (width and length) to support the frame or standards.

 

9

 

 

Use a spirit level to level the frames by adjusting the screw jacks up or down until the bubble rests in the centre of the lines.

14

At the best position for access, and according to the plan, attach tubes to the frame at the top and the bottom for the ladder to be tied to. The slope or pitch of the ladder needs to be not less than 1:4. The slope must be no more than 1:6.

 

  1. What is the maximum extension on an adjustable base plate?

3 m

 

  1. What is the minimum width of a scaffold plank?

450 mm

 

  1. What is the minimum width of a heavy duty work platform?

900 mm (4 boards)

 

  1. Scaffolding inspections depend on a number of factors. Describe 3 factors.
  • Erection of the Scaffold.
  • Scaffold Integrity.
  • Scaffold Access.
  • Materials and Planking.
  • Guardrails and Toeboards.
  • Working on Scaffolds

 

  1. Are gaps allowed between the planks of a working platform?

Spacing between the planks of a working platform should be there but not more than 1 inch until and unless more space is required. A competent person should calculate that how gap is required.

 

  1. What 5 records must be completed during the inspection of an erected scaffold?
  • The location, comments
  • Date and time of inspections
  • Designing and specification references
  • Person’s name and position must be mentioned who carried out the inspection
  • Brief detailing of a scaffolding structure.

 

  1. Provide 2 reasons why a scaffolding plan may need to be modified.
  • Traffic at the working place must be avoided.
  • Without proper knowledge of using a scaffold, it can lead to certain damages, risk factors tends to get higher. 

 

  1. Review the Safe Work Australia Code of Practice for Scaffolding work, Section 6 – Inspection and Maintenance. Outline the 2 key points under Regulation 225.
  • Written confirmation should be given by a qualified person prior using the scaffold.
  • It is important that a scaffold must be inspected by a person who has a complete knowledge about this.

 

  1. If a scaffold component has been damaged during use, what should you do?

Damaged scaffolds must not be used. Tampering of a scaffold can lead to further risks. Supervisor must be informed about the tampered or a incomplete scaffold.

 

  1. How is scaffolding dismantled, and what are the main safety hazards?

Scaffolding is dismantled using reverse procedure as for erection.

 Falling objects

Throwing staff between workmates

Wrong PPE

  1. Outline the clean-up procedure for dismantled scaffolding components.
  • All the equipments must be cleaned properly. These can be cleaned by brushing, scraping and hosing.
  • All the parts must be checked properly to see whether there is any damage or not.
  • All the parts must be kept accordingly so that no difficulty occurs while finding any tool or equipment.
  • No waste must be kept around.

 

  1. What checks need to be carried out on scaffolding components during the dismantling process? List 4.
  • Screw jacks
  • Base plates
  • Sole boards
  • Any dropped parts