Pressure equalized rainscreen cladding systems

A pressure equalized rainscreen cladding system typically comprises of items such as breather membrane, secondary support structure and cavity barriers.

Uniclass2015 - Ss_25_20_70_65 Pressure equalized rainscreen cladding systems
Reference Notes
NBS Code

25-80-70/160 Pressure equalized rainscreen cladding system

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NRM1

2.5.3 Solar/rain screening (default)

Rules of measurement | Cost benchmarks

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Download manufacturer object defintion template

Manufacturer Product Data template

Complete this electronic spreadsheet to ensure that your Pressure equalized rainscreen cladding systems product information meets the requirements of Level 2 BIM. This is important as it will enable your customers to select, specify and use your products within the BIM environment. Once you have completed this template you can host it on your own website or distribute it to your customers. Please note that we do not host completed product data templates within the BIM Toolkit.

1

Requirement

Visual information to assist the client in identifying project objectives/elements. Expect drawings and diagrams showing important parameters or constraints. The intention is to develop and understand the initial project brief and Client requirements.

Purpose of information

To provide a visual indication of proposals at a Feasibility stage identifying key requirements.

Plan

The above illustration is for Drained and back-ventilated rainscreen cladding systems from the NBS section Rainscreen cladding systems. This is indicative of the LOD requirements for Pressure equalized rainscreen cladding systems.

2

Requirement

Graphical representation of element, dimensionally inaccurate.

Purpose of information

To provide a visual indication of proposals at a Concept stage identifying key requirements such as access and maintenance zones etc. Information to be suitable for zonal spatial coordination of primary systems / elements.

Plan
2D Section

The above illustrations are for Drained and back-ventilated rainscreen cladding systems from the NBS section Rainscreen cladding systems. This is indicative of the LOD requirements for Pressure equalized rainscreen cladding systems.

3

Requirement

Visual information to provide developed principles of the design to a greater level of detail. Developed coordination between all professions. Visual development showing coordination for general size and primary relationships between different elements of the construction. Can form a brief for a specialist sub-contractor or fabricator to progress with their technical design, fabrication and installation. This would be expected to include critical dimensional coordination, performance requirements and qualities of finish.

Purpose of information

To provide a visual representation of proposals, confirming brief for technical Design stage supporting full spatial coordination.

Plan
Elevation
2D Section

The above illustrations are for Drained and back-ventilated rainscreen cladding systems from the NBS section Rainscreen cladding systems. This is indicative of the LOD requirements for Pressure equalized rainscreen cladding systems.

4

Requirement

Visual information to provide fixed principles of the design supporting procurement. Developed coordination between all professions. Visual representations showing coordination for general size and relationships between different elements of the construction. Graphical representation of system, dimensionally accurate indicating primary performance characteristics. Graphical information represented may alter dependant on visual information to be produced, eg: Scope of work drawings, setting out, floor loading etc Typical / Installation details separately produced linked to model element and adjacent constructions.

Purpose of information

To provide a visual representation of proposals at a Technical Design stage supporting full spatial coordination.

Plan
Elevation
2D Section

The above illustrations are for Drained and back-ventilated rainscreen cladding systems from the NBS section Rainscreen cladding systems. This is indicative of the LOD requirements for Pressure equalized rainscreen cladding systems.

5

Requirement

Visual information to provide full information to support construction / installation. Developed coordination between all professions. Visual representations showing final coordination for size and relationships between different elements of the construction. Graphical representation of system, dimensionally accurate indicating primary performance characteristics and sufficient information to support installation. Typical / Installation details separately produced linked to model element and adjacent constructions.

Purpose of information

To be updated during the construction process to reflect the final design, and to provide a future reference to sit alongside the O&M Manuals.

Plan
Elevation
2D Section

The above illustrations are for Drained and back-ventilated rainscreen cladding systems from the NBS section Rainscreen cladding systems. This is indicative of the LOD requirements for Pressure equalized rainscreen cladding systems.

Download manufacturer object defintion template

Manufacturer Product Data template

Complete this electronic spreadsheet to ensure that your Pressure equalized rainscreen cladding systems product information meets the requirements of Level 2 BIM. This is important as it will enable your customers to select, specify and use your products within the BIM environment. Once you have completed this template you can host it on your own website or distribute it to your customers. Please note that we do not host completed product data templates within the BIM Toolkit.

3

Provide information relevant to the specific performance of the deliverable. Information to specify the completion (cleaning, testing, spares, training...) of the deliverable should also be provided in the associated specification.

Name Definition
Rainscreen cladding system design Design requirements, Standard and Appearance and fit.
Design and fabrication tolerances Standard, Primary support structure design tolerances and Rainscreen envelope zone tolerances.
Quality management Required documentation and Timing.
Structural performance – permanent and imposed loads Standard, Loads and Deflections and movements.
Thermal movement Service temperature range.
Fire performance to BS 476 Standard, Surface spread of flame and Fire resistance of cavity barriers.
Fire performance to BS EN 13501 Standard, Reaction to fire classification and Fire resistance of cavity barriers.
Water penetration Watertightness and Water leakage requirements.
Avoidance of condensation Interstitial condensation, Risk of interstitial condensation and Notional outdoor psychrometric conditions.
Acoustic performance – sound transmittance Weighted sound reduction index (Rw) (minimum) and Weighted standardized level difference (DnTw) (minimum).
Air permeability Permeability class, Peak test pressure and Air exfiltration rate (maximum).
Thermal performance Method of calculation, U-value of rainscreen wall (average) and Method for assessing thermal transmittance of assemblies.
Solar reflection of cladding Requirement and Submittals.
Durability Relevant agents or degradation mechanisms, Primary components and Secondary components.
Performance testing of project specimens Assessment and certification, Test location and Scale of specimens.
Testing of fixings Test standard, Test location and Test criteria.
Compliance with performance requirements Requirement, Method and Testing authority.
4

Provide information relevant to the specific child products of the deliverable to allow suitable products from manufacturers to be selected. Information covering the completion and execution of the deliverable and its child products should also be provided.

Name Definition
System manufacturer The System manufacturer of the Pressure equalized rainscreen cladding systems.
Breather membrane - Material Products such as Building papers.
Breather membrane - Fasteners Products such as Carbon steel wire nails.
Secondary support structure - Carriers Products such as Aluminium carrier rails.
Secondary support structure - Fasteners Products such as Carbon steel hexagon head screws.
Cavity barriers Products such as Sleeved mineral wool small cavity barriers.
Cladding panels - Material Products such as Aggregate-faced glass reinforced plastics (GRP) panels.
Cladding panels - Fasteners Products such as Acrylic adhesive fixing tapes.
System accessories Products such as Access panels.
5

Provide information relevant to the specific child products of the deliverable to allow for purchasing. Information covering the completion and execution of the deliverable and its child products should also be provided.

Name Definition
System manufacturer The System manufacturer of the Pressure equalized rainscreen cladding systems.
Breather membrane - Material Products such as Building papers.
Breather membrane - Fasteners Products such as Carbon steel wire nails.
Secondary support structure - Carriers Products such as Aluminium carrier rails.
Secondary support structure - Fasteners Products such as Carbon steel hexagon head screws.
Cavity barriers Products such as Sleeved mineral wool small cavity barriers.
Cladding panels - Material Products such as Aggregate-faced glass reinforced plastics (GRP) panels.
Cladding panels - Fasteners Products such as Acrylic adhesive fixing tapes.
System accessories Products such as Access panels.
6

Provide the information specific to the installed deliverable that is required for operation and maintenance. Information covering the detailed maintenance should also be provided in the associated PDF manuals.

Name Definition
Asset type An indication of whether the object is fixed or movable.
Manufacturer Email address for the organisation responsible for supplying or manufacturing the object
ModelNumber The product, item or unit number assigned by the manufacturer of the object.
Warranty guarantor (parts) Email address for the organisation responsible for the parts warranty.
Warranty duration (parts) Duration of parts warranty.
Warranty guarantor (labour) Email address for the organisation responsible for the labour warranty.
Warranty duration (labour) Duration of labour warranty.
Warranty duration unit Duration of warranties (typical value is 'years').
Replacement cost An indicative cost for unit replacement.
Expected life The typical service life of the object.
Duration unit Duration of expected life (typical value is 'years')
Warranty description Description of the warranty content and any exclusions.
Nominal length Typically the larger or primary horizontal dimension.
Nominal width Nominal width of product, typically the characteristic or secondary horizontal or characteristic dimension.
Nominal height Typically the vertical or secondary characteristic dimension.
ModelReference The name of the object as used by the manufacturer.
Shape Characteristic shape of product.
Size Characteristic size of product.
Colour Characteristic or primary colour of product.
Finish Characteristic or primary finish of product.
Grade Standard grading which the product corresponds.
Material Characteristic or primary material of product.
Constituents Optional constituent features, parts or finishes.
Features Other important characteristics or features relevant to product specification.
Accessibility performance The accessibility issue(s) which the object satisfies.
Sustainability performance Description of the sustainability issue(s) which the object satisfies
Code performance The code compliance requirement(s) which the object satisfies
Serial number The serial number assigned to an occurrence of a product by the manufacturer (per instance).
Installation date The date that the manufactured item was installed (per instance).
Warranty start date The date on which the warranty commences.
Tag number The tag number assigned to an occurrence of a product by the occupier (per instance).
Bar code The identity of the bar code (or rfid) given to an occurrence of the product (per instance).
Asset identifier The identification assigned to an asset that enables its differentiation from other assets.