BG6 Design Framework for Building Services Why? What? How? Martin Ronceray 01 Oct 2018
BSRIA Values 2
BSRIA Sustainable Construction Group 3
Why? The purpose 4
Purpose of BG6 Details of limitations not always explicit in contracts in specifications in drawings Several parties (stakeholders) involved at different times during the project Different deliverables Client Consultant Contractor 5
Purpose of BG6 Enable more profitable, effective and efficient project delivery Greater clarity of each designer s role Reduced conflict within the project team How Why Team design deliverables from each project stage Tighter definition of who designs what Defining who produces which drawing 6
History From a Technical Note to a BSRIA Guide 7
History of BG6 1994 TN8 2006 BG6 (1 st ) 2012 BG6 (3 rd ) 2018 BG6 (5 th ) 1997 TN21 TN22 2009 BG6 (2 nd ) 2014 BG6 (4 th ) Allocation of Design Responsibilities a code of conduct to avoid conflict Allocation of Design Responsibilities + example drawings A Design Framework for Building Services 8
Changes 4 th to 5 th edition 9
BG6/2014 (4 th edition) Figure 1 Changes in BG6 Before 5 th edition, co-ordination of services within delivered outputs were sub-divided at Stage 3a, 3b and Stage 4a, 4b, 4c for handover points 10
Changes in BG6 The key changes between the 4 th & 5 th edition Stage 3 stands as only one stage Stage 4 stands as only one (long) stage with technical design division Feasible design using generic objects Coordinated design using generic objects Coordinated design using specific objects 11
Changes in BG6 The key changes between the 4 th & 5 th edition (cont.) Defining, understanding and categorising clashes Critical Moderate Allowable clash Two distinct elements occupying the same space. Stage 4: Small pipework clash where space is proven to be sufficient 12
Changes in BG6 The key changes between the 4 th & 5 th edition (cont.) Appendix B extended to cover a large scope of deliverables New Appendix C to present examples Examples for different design responsibility scenarios Aim at presenting some particularities in the pro-formas when consultant and contractor have to interact Some variations when the consultant is appointed by the client or by the main contractor 13
What? The structure 14
Structure of BG6 Alignment with stages of RIBA PoW Broadly in line with ACE Schedule of Services Focus on MEP aspects (not structural or civil eng.) Publication Front-end sections Appendices 15
Structure of BG6 Front-end sections Design process on building projects Design coordination of building services Building Information Modelling (BIM) Level of details and information (LOD/LOI) Contractors designed portion (CDP) Process of using BG6 16
Structure of BG6 Appendices Appendix A Pro-formas Definitions Illustrations Appendix B Appendix C (new in 5 th edition) 17
Structure of BG6 Appendix A Pro-formas One pro-forma for each stage Pro-forma acts as checklist for design activities Segmentation of activities General obligations Client and team liaisons Plant & specialist design MEP designs Commissioning Deliverables 18
Structure of BG6 Appendix A Definitions Definitions for the illustrations Concept, Developed, Technical, Installation, Builders work, Manufacturers, As-built Based on outcome to be shown Typical use at the stage 19
Structure of BG6 Appendix A Illustrations 3D views from a model Plant room & distribution Layout drawings MEP services Schematic drawings Mechanical and electrical 20
Structure of BG6 Appendix B Allocating information production Link with App. A pro-formas to identify deliverables Different classifications available BSRIA system list Uniclass 2015 NRM3 Non-exhaustive list of deliverables illustrations (models, drawings) information (specifications, reports) 21
Structure of BG6 Appendix B Matrix of deliverables List of stages List of services List of who is responsible to deliver what and when 22
Structure of BG6 Appendix C Examples for different design responsibility scenarios Aim at presenting some activities in the pro-formas when consultant and contractor have to interact Some variations when the consultant is appointed by the client or by the main contractor 23
Structure of BG6 Appendix C Example 1 24
Structure of BG6 Appendix C Example 1 MEP consultant (lead) 25
How? The process 26
Process of BG6 Step 1 Complete App. A Step 2 Complete App. B Step 3 Issue App. A & B Step 4 Review & update 27
Process of BG6 Step 1 Complete pro-formas in Appendix A 28
Process of BG6 Complete the pro-forma for each required stage 29
Process of BG6 Identify the party who is going to undertake each design activity and assign a letter to them A B C D E F Client Architect MEP design consultant Main contractor MEP contractor MEP specialists (lift, fire) 30
Process of BG6 Allocate responsibility per party Lead/Review/Support but only one lead/activity Stakeholders L R S L L L L L S S S R S S 31
Process of BG6 Add comments to clarify the scope Remove activities not relevant to the project L L L S S Consider inputs from utility providers and underground services survey R L S Client to approach local fire brigade for review S L L R S S 32
Process of BG6 Insert additional activities at the end of the proforma 5.10.1 Include final asset numbers in 3D-model R L S R FM contractor to review 5.10.2 Provide list of final assets and associated numbers R L S R FM contractor to review 33
Process of BG6 Step 2 Complete associated matrix in Appendix B 34
Process of BG6 Decide which classification to use for the services BSRIA Systems List Uniclass 2015 Systems NRM3 Systems 35
Process of BG6 Decide which illustrations and other deliverables are required Building information models: 3D model Drawing layouts and schematics Non-graphical information Reports, studies, analyses Data sheets, specification Programmes, plans, schedules 36
Process of BG6 Decide which engineering services are included in the project Assign the name of the team member who will be delivering them Add programme dates to produce a task information delivery plan (BIM Level 2) 37
Process of BG6 Step 3 Issue the completed pro-formas as part of the contractual requirements Step 4 Review and update Appendix B as deliverables are issued by the project team 38
Thank you Martin Ronceray Principal Consultant - Construction Process martin.ronceray@bsria.co.uk 39