BRUKL

BRUKL Output Documents / SBEM Calculations

Also referred to as SBEM Calculations, BRUKL (Building Regulations Part L) Reports (or Output Documents as they are formally known as)  are usually requested by Building Control at both the design and completion stage of a commercial building new construction, conversion or extension.

BRUKL Reports are also required by BREEAM Assessors in order to verify the Building Energy Rating and permit the award of related credits. (for more info on BREEAM click here.)

Part L2A

New Construction

Part L2B

Conversion

Part L2B

Extension

BRUKL Reports (also referred to as SBEM calculations or reports) can either be generated using SBEM (Simplified Building Energy Modelling) or for more complex buildings that take into consideration daylighting and seasonal variances, DSM (Dynamic Simulation Modelling).

 

To complete the necessary calculations and generate the relevant reports, we require some basic information about the building. A full list will be provided upon instruction.

This page deals with BRUKL Reports as requested by Building Control. More information on our BREEAM services can be found here.

WHAT INFORMATION DO WE REQUIRE ?

We will require to you complete a simple online form and upload some supporting evidence. When you instruct us to complete work for you, you will need to register with the client area where you will have access to the online Building Information Form, example evidence and our forum, where you can post questions and browse useful information.

In summary:

To produce BRUKL Reports we require the following information. 

  • Completed online Building Information Form

The following evidence uploaded: (again the link is in the client area)

  • HVAC info – location/heat recovery, make/model etc.

  • Lighting loads (w/m2 @ 100 LUX, or, lumens/watts either per zone or average for building)

  • Hot water systems (storage tank make/model/size)

  • U-Values – walls, floors, roofs, glazing, doors

  • Plans and elevations – must include measurements (do not include autocad files)

  • General overview of mechanical ventilation – location, heat recovery, make/model etc

  • External elevations / conceptual drawings

  • Air test Certificate if >500m2 (or if <500m2 and permeability is being declared as less than 15)

  • (optional but helpful) Photographs of the project, during construction and upon completion

 

Note, for Shell and Core / Design Stage, as a minimum we require only floor plans and elevations to produce either an EPC or an SBEM report. However, any M&E specifications or U values that have been recommended (in the absence of any information provided) within the calculations should be implemented as a minimum during fit out.

 

PART L2A – NEW BUILD (NON-DOMESTIC)


All Non-Domestic buildings require SBEM calculations at both design and completion stage unless they would normally be exempt from Part L (and therefore Commercial EPC requirements). These would include:

  • Places of worship

  • Stand-alone units of less than 50m2

  • Listed buildings that are unable to comply with Part L due to planning restrictions

  • Temporary buildings with a planned lifecycle of less than 2 years

 

PART L2B – EXTENSIONS ON EXISTING NON-DWELLINGS

SBEM calculations are required where the extension part has a floor area greater than 25% of the floor area of the original building and a gross internal area greater than 100m2.

An SBEM will also be triggered if the glazing areas are greater than those shown in the table below, and if so then the calculations will need to show that the extension is as energy efficient (with the same, or lower carbon emissions) than the equivalent extension but with compliant glazing areas.

The calculations will only apply to the extension area but may take into consideration the existing buildings core services.

 

PART L2B – CONVERSIONS & RENOVATIONS

Essentially all conversions to non-dwellings require an SBEM Calculation in order to comply with Part L2b of the Building Regulations (or a regional variant). A conversion typically occurs as a result of a ‘Material Change of Use’, where the purpose or use of the building is altered.

Some examples of what is considered a ‘Material Change of Use’ are provided by Building Regulations/Standards:

  • The building is used as a hotel or boarding houses where it was previously not

  • The building is used as an institution or school where previously it was not

  • The building is used as a public building where previously it was not

  • The building is used as a dwelling where previously it was not

 

TYPICAL BRUKL PACKAGE - £400 UPWARDS.

  • Design-Stage’ SBEM/DSM calculations including modelling multiple simulations to ensure BER<TER

  • ‘As-Built’ SBEM/DSM calculations, again including modelling multiple simulations to ensure BER<TER

  • Lodged “as-built” Commercial EPC – This must be a level 4 (or 5) ‘On-Construction Commercial EPC’. This can also be a ‘Shell and Core’ EPC, where much of the fit out is assumed -useful if the information is hard to obtain, or the project has recently been handed over.

 

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