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Excavating and providing temporary support to pits and trenches in the workplace

Reference
K/615/6028
Level
Level 2
Credit Value
17
Guided Learning Hours
57
Grading Type
Pass/Fail
Aim
The aim of this unit is to illustrate the skills, knowledge and
understanding required to confirm competence in excavating and
providing temporary support to pits and trenches in the workplace
within the relevant sector of industry


Learning Outcomes Assessment Criteria
The Learner Will The Learner Can
1 Interpret the given information relating to the work and resources when excavating and providing temporary support to pits and trenches.
  • 1.1 - Interpret and extract relevant information from drawings, specifications, schedules method statements, risk assessments and manufacturers' information.
  • 1.2 - Comply with information and/or instructions derived from risk assessments and method statements.
  • 1.3 - Describe the organisational procedures developed to report and rectify inappropriate information and unsuitable resources and how they are implemented.
  • 1.4 - Describe different types of information, their source and how they are interpreted in relation to:
    - drawings, specifications, schedules, method statements, risk assessments, manufacturers' information, current regulations governing buildings and official guidance associated with excavation and provision of temporary support to pits and trenches.
2 Know how to comply with relevant legislation and official guidance when excavating and providing temporary support to pits and trenches.
  • 2.1 - Describe their responsibilities regarding potential accidents, health hazards and the environment whilst working:
    - in the workplace, below ground level, in confined spaces, at height, with tools and equipment, with materials and substances, with movement and storage of materials and by manual handling and mechanical lifting.
  • 2.2 - Describe the organisational security procedures for tools, equipment and personal belongings in relation to site, workplace, company and operative.
  • 2.3 - Explain what the accident reporting procedures are and who is responsible for making reports.
3 Maintain safe and healthy working practices when excavating and providing temporary support to pits and trenches.
  • 3.1 - Use health and safety control equipment safely and comply with the methods of work to carry out the activity in accordance with current legislation and organisational requirements when excavating and providing temporary support to pits and trenches.
  • 3.2 - Demonstrate compliance with given information and relevant legislation when excavating and providing temporary support to pits and trenches in relation to the following:
    - safe use of access equipment
    - safe use, storage and handling of materials, tools and equipment
    - specific risks to health.
  • 3.3 - Explain why and when health and safety control equipment, identified by the principles of prevention, should be used, relating to excavating and providing temporary support to pits and trenches, and the types, purpose and limitations of each type, the work situation and general work environment, in relation to:
    – collective protective measures
    – personal protective equipment (PPE)
    – respiratory protective equipment (RPE)
    – local exhaust ventilation (LEV) (including the monitoring of gas types and levels).
  • 3.4 - Describe how the relevant health and safety control equipment should be used in accordance with the given working instructions.
  • 3.5 - Describe how emergencies should be responded to in accordance with organisational authorisation and personal skills when involved with fires, spillages, injuries and other task-related activities.
4 Select the required quantity and quality of resources for the methods of work to excavate and provide temporary support to pits and trenches.
  • 4.1 - Select resources associated with own work in relation to materials, components, fixings, tools and equipment.
  • 4.2 - Describe the characteristics, quality, uses, sustainability, limitations and defects associated with the resources in relation to:
    - timber support systems, frames, trench sheets,
    - support systems including: skeleton, open and closed boarding, drag box, trench box, coffer dam, diaphragm wall and secant support
    - hand tools, portable power tools, plant, machinery and equipment.
  • 4.3 - Describe how the resources should be used correctly and how problems associated with the resources are reported.
  • 4.4 - Explain why the organisational procedures have been developed and how they are used for the selection of required resources.
  • 4.5 - Describe any potential hazards associated with the resources and methods of work.
  • 4.6 - Describe the methods of calculating quantity, length, area, volume and wastage associated with the method and procedure to excavate and provide temporary support to pits and trenches.
5 Minimise the risk of damage to the work and surrounding area when excavating and providing temporary support to pits and trenches.
  • 5.1 - Protect the work and its surrounding area from damage in accordance with safe working practices and organisational procedures.
  • 5.2 - Maintain a clean work space.
  • 5.3 - Dispose of waste in accordance with current legislation.
  • 5.4 - Describe how to protect work from damage and the purpose of protection in relation to general workplace activities, other occupations and adverse weather conditions.
  • 5.5 - Explain why the disposal of waste should be carried out safely in accordance with environmental responsibilities, organisational procedures, manufacturers' information, statutory regulations and official guidance.
6 Complete the work within the allocated time when excavating and providing temporary support to pits and trenches.
  • 6.1 - Demonstrate completion of the work within the allocated time.
  • 6.2 - Describe the purpose of the work programme and explain why deadlines should be kept in relation to:
    - types of progress charts, timetables and estimated times
    - organisational procedures for reporting circumstances which will affect the work programme.
7 Comply with the given contract information to excavate and provide temporary support to pits and trenches to the required specification.
  • 7.1 - Demonstrate the following work skills when excavating and providing temporary support to pits and trenches:
    - measuring, marking out, excavating, positioning and securing.
  • 7.2 - Use and maintain hand tools, portable power tools and ancillary equipment.
  • 7.3 - Excavate and provide temporary support, to given working instructions, to pits and trenches with one of the following
    - timber
    - trench sheet
    - frames
    - support systems (e.g. skeleton, open and closed boarding, drag box, trench box, coffer dam, diaphragm wall or secant support).
  • 7.4 - Describe how to apply safe and healthy work practices, follow procedures, report problems and establish the authority needed to rectify them, to:
    – identify installation quality requirements
    – conform to agreed specification
    – confirm and work to agreed designs
    – recognise changes in ground and soil conditions
    – visually inspect excavations prior to entry
    – recognise side wall pressure, pressure from existing structures and hydrostatic pressure to depth ratios
    – support excavations with timber, trench sheets, frames and support systems including: skeleton, open and closed boarding, drag box, trench box, coffer dam, diaphragm wall and secant support
    – work around protected services
    – work with, around and in close proximity to plant and machinery
    – direct and guide the operations of plant and machinery
    – remove water
    – work in confined spaces
    – recognise the potential effects of installing temporary supports on adjacent structures
    – protect adjacent and neighbouring structures
    – assess and adjust propping systems
    – reduce voids behind supports, backfill, wedges and grouts
    – install and secure edge protection
    – recognise and determine when additional specialist skills and knowledge are required and report accordingly
    – determine specific requirements for structures of special interest, traditional build (pre 1919) and historical significance
    – use hand tools, portable power tools and equipment
    – work at height
    – use access equipment.
  • 7.5 - Describe the needs of other occupations and how to effectively communicate within a team when excavating and providing temporary support to pits and trenches.
  • 7.6 - Describe how to maintain the tools and equipment used when excavating and providing temporary support to pits and trenches.
Assessment guidance and/or requirements
This unit must be assessed in a work environment, in accordance with the ConstructionSkills‘ Consolidated Assessment Strategy for Construction and the Built Environment.
Assessors for this unit must have verifiable, current industry experience and a sufficient depth of relevant occupational expertise and knowledge, and must use a combination of assessment methods as defined in the Consolidated Assessment Strategy.
Workplace evidence of skills cannot be simulated.
This unit must be assessed against one of the following endorsements:
Timber
Trench sheet
Frames
Support systems.