ZONE Glazed Buildings – Building Regulations & Specifications
With any construction project there are many factors in the proposed design that will determine the approach to regulatory compliance. The following represents a typical route to UK Building Control compliance for ZONE Glazed Buildings in the education sector.
Part F – Ventilation of new buildings other than dwellings
Using DTM thermal modelling we demonstrate compliance with the recommended parameters for airflow, solar gain and daytime temperatures generated by the model. Ventilation provision in schools is made in accordance with the guidance in Building Bulletin 101 (Ventilation of School Buildings, Building Bulletin 101, School Building and Design Unit, Department for Education and Skills 2006), CIBSE Guide A and CIBSE TM52.
Part L – L2B Conservation of fuel and power in existing buildings other than dwellings
ZONE Glazed Buildings can generally be classified as a building with low energy demand exempt from energy calculations, provided that the thermal capabilities of any adjoining buildings are not compromised. The fixed building services installation is not used to heat the entire enclosed volume of space, only for fixed periods during the day when the building is in use. In order to demonstrate that the year-round temperatures will be suitable for the use class we use DTM thermal modelling against BB101, CIBSE Guide A and CIBSE TM52.
Part A – Structural
1.2 Basis of Structural design and loading BS EN 1991-1-3:2003+A1:2015 1.3 Structural concrete BS EN 1992- 1-1:2004+A1:2014 1.4 Structural work of steel BS EN 1993-1-1:2005+A1:2014. Technical requirements for execution of steel structures BS EN 1090-2:2008+A1:2011 Exc. Class 2.
Part K – Protection from Falling, Collision and Impact
Requirement K4 Protection against impact with glazing
Requirement K5 .1 Protection form collision with opened windows
Requirement K5.2 Manifests in glazing requirement
Requirement K5.3 Window controls
Requirement K6 Protection against impact from and trapping by doors
Part M – Building Access – Access to Buildings other than dwellings
M1 Ramped access M1 Handrails to external stepped and ramped access
M1 Accessible entrances M1 Doors to accessible entrances
Part B – Fire Safety
B1 Section 1 Fire alarm and fire detection systems.
Fire Detection & Alarm System – BS5839 part 1, Fire Safety Signage – BS5499 part 1, Emergency lighting – BS5266 part 1
B1 Section 3 Design for horizontal escape in buildings other than flats
B4 Section 4 Roof coverings
B5 Section 16 Vehicle access
Electrical installations are designed, installed and certificated in accordance with BS7671:2008 amendment 3 2015.
Part C – Site Preparation Resistance to Moisture
Section 4 4.6 Ground supported floors (moisture from the ground)
Part H – Drainage
Section 1 Gutters & rainwater pipes. Section 3 Surface water drainage. Section H4 Building over sewers.
ZONE Glazed Buildings: Design & Construction Specification
Glazed Aluminium Curtain Wall
Commercial aluminium systems for pivot entrance doors, sliding door units and curtain walling include all structural design elements. All sections are powder coated to a standard non-metallic RAL or BS4800 colour range with closing cills, trims and flashings. Double action pivot entrance doors are specified with single point deadlock, armoured keep, flush bolts to slave leaf and concealed overhead closers. Sealed double glazing units are specified throughout with a 28mm minimum thickness.
Trisomet® steel roofing is a single-component, twin wall insulated panel system, pre-finished in a choice of architectural colours. The Corus Colorcoat HPS200 Ultra® range provides long-term performance with maximum durability and low-maintenance. Custom rainwater and eaves systems are fitted to all external elevations of ZONE Glazed Buildings with lower edge eaves flashing incorporating box profile guttering and rainwater goods. All components are manufactured from pre-galvanised material with a powder coated finish to standard non-metallic RAL or BS4800 colour range.
Free-standing portal frames are designed and manufactured in accordance with BS EN 1090 EXC2. Fabricated steelwork undergoes a four-part process for long life corrosion protection. 1. Cold grit-blast SA2.5 2. Zinc coat. 3. Anti-corrosive primer. 4. Polyester powder coat high gloss finish system to RAL or BS4800 colour (non-metallic).
ZONE structures have internal space lighting designed to provide consistent lux levels as specified by the relevant regulatory body for illuminance values and lighting distribution, using LED luminaires suspended from structural elements. Emergency lighting, fire detection and fire alarm system are designed, installed and commissioned to the relevant industry standards and regulatory requirements. The heating and cooling requirement to provide year-round temperatures and airflow suitable for the use class will be determined by the build specification and DTM thermal analysis. The ZONE design system accommodates building service installations including air source climate control, infrared heater units, and mechanical ventilation.
The concrete subfloor construction, with float finish over continuous vapour control membrane and insulation, is specified to meet the requirements of the DTM thermal analysis. Glazing wall plinth construction forms a retaining structure for the subfloor, compensating for changes in ground level. The masonry façade provides continuity with existing building fabric. Rainwater drainage discharges either to slot drainage or a series of gullies, with connection to existing piped stormwater from the structural RWP elements.
Flooring for ZONE structures will be specified at design stage either as an 11mm depth 1-3mm aggregate resin bound decorative stone or a choice of contract vinyl finishes over latex screed and liquid DPM.