BIM4Housing Development Working Group Meeting-20220316
Will building safety managers continue to be needed? It’s currently an issue being reviewed by the UK government as part of the building safety bill. Ultimately, building safety is a function of EVERYBODY’s role.
In the new working group in Bim4housing made up of Tier 1 contractors. The contractors want to find ways to change their process (collectively). Starting this attempt to change their processes via bim4housing enables them to avoid accusations of collusion. Those responsible for quality management have been particularly targeted.
George is passionately against the whole concept of risk transfer on the basis that it increases risk. Ringfencing of risks leads to gaps in responsibilities.
According to tier 1 contractors participating in the working group penetration seals are responsible for 50% of the defects that occur during projects. It’s a fundamental design problem of work stage 4 that is created by procurements. M&E contractors are the ones who select products but architects do not have the information to design the penetrations properly. M&E consultants can’t finish the coordination design due to a lack of instillation expertise and not knowing which products will be purchased. Consequently, George is proposing to Tier 1 contractors that the products that are going to be installed could be selected prior to the M&E contractor being appointed. This information should be obtained in a digital format and should therefore limit additional cost of change.
Liability on Developers and Contractors increasing to 30 years is of significance to the development group. George’s presentation (approx 31 mins-1 hr 11 mins): Liability on Developers and Contractors increasing to 30 years is of significance to the development group.
There are many different initiatives involved eg Bim4housing, BRE, Templater. Asset information and surveying, we have created different outputs presenting findings & recommendations, we’ve produced a set of requirements that support the assimilation of a building safety case – what documents and info you are likely to need for the safety case.
We also look at the use of 3D photography and the use of AI to recognise assets.
Graph overlaying the outputs of the GTI and gateways against the riba plan of work (concept, design, construction and occupation).
Creating a digital record: No evidence = defect. Specification on gateway 2 is focused on, there should be full product specifications by gateway 2. It’s critical that all the information is digital.
Addressing real business issues: the WORKING GROUPS define requirements. The WGs are there to decide what work needs doing, they do not have to do any work themselves. When they decide that there are things where better information could help. They then coordinate with other groups to find common streams to help. Example: standardised AIRs, data templates, and pulling together the O&M information for safety case. The MMC group does: logistics, reduced damage, standardised interfaces, education Fire safety group: improved fire safety, fire stopping, golden thread. Sustainability group will work with embedded carbon.
New organisation called ZERO CONSTRUCT. With the tier 1 group we’re planning to look at change management and the production of digital O&Ms.
For 12 asset types we have very detailed information that is needed to make sure the building is safe eg what risks does the asset mitigate etc. The principal is turning raw information into something that is reusable.
Black Box lessons learned: extracted from roundtable sessions. Encouraging people to take photographs, with example and a comment and description, will help things be improved.
Risk Data Dictionary: we take a risk, look at how to mitigate it, asset types that are involved in the risk, and also asset properties.
Data standardisation workstream: we’ve been putting things into data templates. Other data standardisation dictionaries are IFC, Building smart data dictionary, Uniclass2015, NRM, ETIM and the BIMhawk toolkit.
Duty Holders working group – detailed what they need to perform their function as duty holders.
Progressive specification, validation and assurance. Eg every product has to go through this progressive process.
Then, George explains how the templater software works.
Sustainability workstream – here you can pick what is needed for a particular asset type.
The data key is the Revit instance and the Revit family, a data key will be provided.
1 hr 15 mins: Regarding contractors, the rationale for having the product information earlier is one of better operation information so that the people who are actually going to run the build can make an earlier assessment of how the product will perform. Also, the information is needed for safety/fire safety because if you wait to design eg the sprinkler system there will not be enough room to put the sprinkler system in.
Regarding carbon assessment, the problem with 1click lca is struggling to find the right product, finding an approximate one within 1click, yet that approximate product could be wildly different from the reality. Therefore, there is a question as to whether what is actually being used is of genuine value. Eduardo said it’s inevitable to have approximations regarding carbon assessment and the use of 1click.
Considering that we cannot continually dig up things from the earth existing resources are going to have to be recycled and existing buildings are being considered as mines for that.
Revit will start to struggle with the vast amounts of data.