Fire, Structural and Basements – Page 12
Planning Gateway One, fire statements, structural surveys and basement impact assessments.
Fire, Structural and Basements articles – page 12
335 articlesMovement monitoring during basement construction
A monitoring condition rarely says what to measure or how accurately. Baseline readings, instrument selection and trigger levels tied to predicted movement are what make the scheme work.
Basement waterproofing to BS 8102 and the design water table
BS 8102 waterproofing decisions follow from two things: the grade of internal environment the basement has to achieve, and how high groundwater can rise against the structure.
What a Basement Impact Assessment has to cover
Screening, scoping, investigation then impact assessment, across land stability, groundwater and surface water. Skipping a stage is how these get refused.
Evacuation lifts and inclusive escape in planning layouts
A refuge that eats the stair width is not a refuge. Inclusive escape has to be resolved while the core is still being drawn, not at Building Regulations stage.
Fire service access and water supplies at planning stage
Approved Document B sets the geometry a fire appliance needs, and that geometry is a site layout constraint. Sorting it after permission costs units.
Writing a Fire Statement: the sections and the evidence
A Fire Statement is a form completed by someone with fire engineering competence and supported by dimensioned drawings. Most inadequate ones fail on the drawings rather than the text.
What the Building Safety Regulator checks at Gateway One
At Planning Gateway One the regulator comments as a statutory consultee rather than approving a design. Most of its requests are for dimensioned information that was missing from the drawings.
Structural risk in a change of use application
Prior approval and planning permission say nothing about whether the frame can take the conversion. The structural questions decide unit count and headroom, so they belong at feasibility stage.
Retaining existing structure rather than demolishing
Where a council applies a retrofit first expectation, the application turns on an options appraisal comparing retention and demolition on the same basis. The structural testing has to come first.
Fire safety in listed and historic buildings
Approved Document B is one way of showing compliance, and on a historic building it is often the worst one. Start from the fire engineering objective rather than the standard solution.
Mining legacy and the coalfield referral areas
Sites inside a Development High Risk Area need a coal mining risk assessment with the application. The check is free and takes minutes, and the permit to disturb coal is a separate consent.
Structural justification for demolition in a conservation area
A report saying the building is in poor condition does not answer the statutory duty. What has to be shown is that repair is not a reasonable option, with evidence.
Structural surveys for barn and church conversions
The structural report has one job: showing the building can take the new loads without substantial rebuilding. Trial pits and opening up are where those schemes are won.
Basements and the Party Wall etc. Act alongside planning
Planning permission does not let you start digging. The Party Wall etc. Act runs separately, with its own notices, timescales and costs for a basement project.
Ground movement assessment for a basement, explained
The ground movement section decides a basement application. Here is what the engineer models, how damage categories are assigned and what a monitoring regime should say.
Basement impact assessment: the standard four stage structure
Boroughs that require a basement impact assessment expect the same four stage structure. Here is what belongs in each stage and where audits usually stall.
Sprinklers and suppression: what planning can require
Approved Document B decides where sprinklers are needed. This sets out the narrow cases where a planning condition survives the six tests, and the space and water issues behind them.
External wall materials and combustibility at planning
Planning controls appearance while Building Regulations decide what can be built. This is how to specify external wall materials on a tall residential scheme without creating a conflict.
Fire appliance access in a residential site layout
Fire appliance access depends on a layout fixed at planning. Here are the dimensions that govern it, the hose distance rule, hydrant provision and the gate details that get missed.
Relevant buildings: the 18 metre and seven storey test
A fire statement is required for relevant buildings at 18 metres or seven storeys. Here is where the datum sits, which storeys are excluded, and how podium schemes are treated.
The Health and Safety Executive as a planning consultee
At Gateway One the Building Safety Regulator comments on fire safety matters a planning decision can influence. The response is advice, not a veto, and the timing is what catches developers out.
Article 9A and the fire statement on the application form
Article 9A makes a fire statement a condition of a valid application for relevant high-rise residential buildings. The form is prescribed, the consultee is the Building Safety Regulator, and validation fails without it.
Roof level plant and photovoltaics on a flat roof
Roof plant raises three questions at once: how it reads from above, whether fire can spread across it, and whether anyone can reach it safely. Different people answer each, on different drawings.
Foundations near trees: heave, shrinkage and design depth
On shrinkable clay, a tree 8 metres from your extension can double the foundation depth. The cost arrives at building control stage unless the evidence is gathered early.
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