Install cavity drainage membrane systems
Overview
Duration
Minimum 2 days of 6 learning hours per day
Purpose/scope
The purpose of training delivered against this standard is to provide candidates with the practical skills and knowledge to be able to safely and effectively install cavity drainage membrane systems. It is aimed at people working in the Waterproofing sector.
The scope includes:
- designing a Type C System, the importance of BS 8102:2009 and other reference documents
- health and safety
- pre-installation preparation and checks
- detailing and excavating
- concrete slab/rafts
- perimeter drainage channels
- drainage Inspection access/maintenance ports
- sump installation
- combined systems
- installing the Type C membranes
- dealing with waste.
Occupational relevance
Training delivered against this standard would be relevant to the following occupational group(s):
- operative and craft
- supervision.
Candidate pre-requisites
Candidates must have a basic knowledge of waterproofing terminology, tools and techniques. They must also have completed Installation of Drains Sumps and Pumping Ancillaries training.
Instruction/supervision
As a minimum, course instructors must be able to demonstrate that, in relation to this standard, they have:
- a minimum of five years proven history spent working within the Structural Waterproofing Sector or able to provide evidence of recognised up skilling (e.g. Train the Trainer)
- proven competence in the design and delivery of training courses in structural waterproofing related construction topics and good presentational skills
- will hold the PCA Certificated Surveyor in Structural Waterproofing (CSSW) qualification and ideally Waterproofing Design Specialist (WDS) qualification.
Delivery
Delivery may be in an on or off the job environment.
All materials and equipment must be of a suitable quality and quantity for candidates to achieve learning outcomes and must comply with relevant legislation.
The class size and candidate/instructor ratio must allow training to be delivered in a safe manner and enable candidates to achieve the learning outcomes:
- practical elements – 1: 4 (workshop)
- practical elements – 1: 2 (on site)
- classroom elements – 1: 8
The following delivery methods may be used in the delivery of this standard:
- classroom or workshop
- a blend of classroom and e-learning
- onsite
This standard is considered to contain 51% or more practical training.
This standard is considered to be set at a basic/entry level.
Assessment
For the successful completion of training, candidates must complete a multiple-choice question and answer assessment.
Quality assurance
Quality assurance against this standard will require initial approval of the training organisation and their content mapped to the standard.
CITB will also conduct an approval intervention, either desk-based or centre visit, to ensure the training organisation can meet the requirements of the training standard.
Approved training organisations (ATOs) will be required to present information on records of training and assessment upon request to CITB for desk-based analysis. They will also be visited annually by the CITB quality assurance team.
Refresher
There are no mandatory renewal or recommended refreshment requirements for this standard, however candidates are expected to continue to upskill with new products and techniques.
Approval date
May 2020
Review cycle
On request or within 3 years from approval date
Learning outcomes
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The candidate will be able to: |
Additional guidance to support learning outcome |
|---|---|
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Understand the basic design principles of the Type C cavity drain membrane system
|
design in accordance with the current standard BS 8120:2009 – “The Code Of Practice for the protection of below ground structures against water from the ground and other reference documents”. |
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Adhere to health and safety measures |
understand the health and safety implications and precautions required when:
|
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Carry out pre-installation preparation and checks |
including how to check for cables and hidden services |
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Check the areas of installation and assess the need for further prep work |
ensure that the prep has been carried out. Identify the need for further prep work such as making good and sealing defects prior to installing the cavity membrane. Check soffits and falls required. |
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Assessment of required detailing |
including:
|
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Determine concrete slab and raft requirements
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examine existing solid floors and assess suitability and preparation requirements for retention. |
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Recognise authority from a Structural Engineer with regards to suitability of existing slab for use and removing perimeter material |
the candidate should understand how a Structural Engineer approved design reinforced concrete slab is constructed and the consequences of waterproofing existing slabs and creating rebates. |
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Excavate the retained solid floor and form sump chamber(s) |
locate and design in the sump positions, consideration to issues when cutting through slabs and potential water ingress. |
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Cast reinforced concrete slab |
to include:
|
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Install perimeter drainage channels |
to manufacturers specifications, including:
|
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Design and fit jetting access/maintenance ports to the channel |
ports to be fitted as per manufacturers requirements and on a job by job basis |
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Install sump correctly in chamber |
concrete chamber design and requirements for tanking to deal with potential water ingress and contaminates, as per manufacturers specifications. |
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Combine waterproofing – two forms of waterproofing |
additional requirements include:
|
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Flood test |
flood test floor and drainage to ensure test water runs freely to sump. |
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Apply anti-lime coating to any new concrete walls and floor |
|
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Calculate the amount of membrane product(s) that will be required |
in relation to the work area/specification in accordance with the manufacturer’s instructions. |
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Fix Cavity Drainage Membrane |
in accordance with manufacturer’s instructions, including:
|
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Install drainage channels and jetting ports |
complete connections between sump and drainage channel. |
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Lay insulation former |
|
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Lay appropriate Cavity Drainage Floor Membrane over prepared floor or approved insulation |
in accordance with manufacturer’s instructions, using correct joint tapes and detailing at the perimeter to receive various floor finishes. |
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Identify the need for continuation of the waterproofing system in stepped and multi-level basements |
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Mark final positions of rodding and jetting access points for maintenance and service of the drainage channels |
|
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Connect outlet pipes to sump and to approved drainage or suitable land drainage |
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Final test system and drainage for leakage and efficiency |
|
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Deal with different waste materials |
to include:
|
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Dispose of contaminated or hazardous waste materials |
in line with employer procedures. |
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Complete all relevant paperwork |
to include:
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Related standards
- Prepare surfaces for structural waterproofing
- Prepare structure joints and apply primary waterproofing
- Apply cementitious coatings, multi-coat renders and crystallisation active materials
- Installing and maintaining work area protection
- Install drains sumps and pumping ancillaries
- Hand held tools and equipment.
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