Pre-manufacturing components (non-systemised primary structure)

Modern Methods of Construction, Introducing the MMC definition framework, published by Ministry of Housing, Communities & Local Government (MHCLG) in 2019 defines 7 categories for MMC:

• Category 1 – Pre-manufacturing (3D primary structural systems).
• Category 2 – Pre-manufacturing (2D primary structural systems).
• Category 3 – Pre-manufacturing components (non-systemised primary structure).
• Category 4 – Additive manufacturing (structural and non-structural)
• Category 5 – Pre-manufacturing (non structural assemblies and sub-assemblies).
• Category 6 – Traditional building product led site labour reduction / productivity improvements.
• Category 7 – Site process led site labour reduction / productivity / assurance improvements.

Category 3 – Pre-manufacturing components (non-systemised primary structure) is defined as:

‘Use of pre-manufactured structural members made of framed or mass engineered timber, cold rolled or hot rolled steel or pre-cast concrete. Members to include load bearing beams, columns, walls, core structures and slabs that are not substantially in-situ workface constructed and are not part of a systemised design.

‘This category although focussed on superstructure elements, would also include sub-structure elements such as pre-fabricated ring beams, pile caps, driven piles and screw piles.’

Ref https://www.gov.uk/government/publications/modern-methods-of-construction-working-group-developing-a-definition-framework

[edit] Related articles on Designing Buildings Wiki

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• Modern methods of construction.
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• Volumetric.