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Design Risk Workspace
Riverside House Extension — Stage 3 Spatial Coordination
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Open
1
Under Review
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Significant
under reviewStage 3SIGNIFICANT
Structural intervention at party wall
New steel frame bears onto existing party wall. Risk of differential movement and cracking to neighbour property.
Mitigation
Independent structural survey of party wall. Movement joints at interface. Party wall agreement in place.
Residual Risk
Monitor during construction. Pre-condition survey completed.
Owner: James ChenUpdated: 3 Jun 2026
acceptedStage 3
Flat roof drainage falls insufficient
Existing structure limits achievable falls on new flat roof extension. Risk of ponding.
Mitigation
Tapered insulation to achieve 1:60 minimum falls. Secondary outlet specified.
Owner: Tom DaviesUpdated: 27 May 2026