This one day course (delivered via 2 x 3hr Zoom) would be based around the requirements of BS8485 for new buildings. It would aim to dispel the myth that gas protection design is just adding up numbers of points and obtaining warranties from suppliers. This is a major cause of problems in the industry.
Introduction
Designing ground gas protection systems following the guidance in BS8485 is more than just adopting a Characteristic Situation and adding up points. It requires a detailed justification for any gas membrane and calculations for any underfloor ventilation system that is specified. The points assigned to the floor construction should also be justified. The design should be summarised and explained in design report and shown on detailed site specific drawings for construction.
This training will explain in detail the factors to be considered and how to complete the appropriate venting calculations. It will explain the details to be included in a design report with reference to relevant clauses in BS8485. The standard also recommends that the design report should include the verification plan for the proposed system. The course will also explain when Detailed Quantitative Risk Assessment (DQRA) might be used in place of the simple empirical points system.
Who should attend
The training will be relevant to anyone who procures, designs or approves gas protection systems. This would include developers, contractors, consultants, NHBC and local authorities
Why should you attend
- gain an overview of the contract for gas design, roles and responsibilities
- understand BS8485 points system – where and when it can be used.
- learn design considerations for concrete floor slabs and basement walls for gas resistance and BS8485 points
- explore design, detailing and specification of gas or VOC membranes – how to assess durability, permeation of gases other than CH4 and CO2, VOCs
- review gas detection systems – what are they for and critical factors eg detector head locations
- explore design for future changes in gas regime
- undertake Ventilation design calculations
- understand the design report and verification plan
- share experiences and knowledge with our expert trainers and other delegates
- obtain CPD accreditation.
Course content
- Contract for gas design, roles and responsibilities
- BS8485 points system – where and when it can be used.
- Design considerations for concrete floor slabs and basement walls for gas resistance and BS8485 points
- Design, detailing and specification of gas membranes – how to assess durability, permeation of gases other than CH4 and CO2, VOCs
- Ventilation design calculations
- Gas detection systems (time permitting)
- Design for future changes in gas regime
- Design report and verification plan