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H42 Precast concrete panel cladding/ features

TYPES OF CLADDING/ FEATURES

110 PRECASTgenerally
• Support structure: Steel frame.
• Panel type: Sandwich.
• Panel finish:
- Matching sample: sample to be agreed.
- Profile: site specific.
• Thermal insulation: site specific.
• Fixing: site specific.
• Panel joints: site specific.
• Accessories/ Features/ Incorporated components: site specific.

GENERAL REQUIREMENTS/ PREPARATORY WORK

210 DESIGN
• Cladding: Complete detailed design.
- Standard: To BS 8297.
• Related works: Coordinate in detail design.

222 FABRICATION SAMPLES
• General: During detailed design work, submit samples of to be agreed.
- Obtain approval of appearance before proceeding.

DESIGN/PERFORMANCE REQUIREMENTS

232 INTEGRITY OF CLADDING
• Requirement: Determine sizes and thickness of panels, sizes number and location of
fixings and handling fixings, incorporation of accessories and components to
ensure cladding installation and panels will resist factored dead, imposed and
design live loads and accommodate deflections, shrinkage, creep, handling and
thermal movements without damage.
• Wind loads: Calculate to BS 8297 Annex A appropriate to location and exposure
and taking account of existing and known future adjacent structures.
- Basic wind speed: as BS 8297 to suit site location.
- Funnelling: to suit site constraints and adjacent buildings.
- Terrain category: as BS 8297 to suit site location.
- Topographical factor: as BS 8297 to suit site location.
• Impact loads: Visible surfaces of cladding to meet the requirements of BS 8297
clause 12.2.5.
• Temporary imposed loads: site specific.

236 THERMAL PROPERTIES
• Thermal transmittance (U-value) of precast panel including joint: site specific.

RotF generic (intermediate) NBS 2014 6118-AEW-XX-XX-NBS-A-01