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PROPRIETARY SILLS/ LINTELS/ COPINGS/ DRESSINGS

720 SILLS
• Standard: To BS 5642-1.
• Material: site specific .
• Manufacturer: Contractor's choice .
- Product reference: site specific .
• Dimensions: As shown on drawings.
• Finish: To match sample .
• Mortar for bedding/ jointing: Cement gauged as section Z21.
- Standard: To BS EN 998-2 .
- Mix: site specific .
- Additional requirements: site specific .
• Joints: Flush.
• Bedding one piece sills: Leave bed joints open except under end bearings and
masonry mullions. On completion, point to match adjacent work.

735 PRECAST CONCRETE LINTELS
• Standard: To BS EN 845-2.
• Manufacturer: Contractor's choice .
- Product reference: site specific .
• Types: site specific .
• Sizes: site specific .
• Additional requirements: site specific .
• Placement: Bed on mortar used for adjacent work.
- Bearing length (minimum): 100 mm or manufacturers recomendation if greater .

755 PREFABRICATED STEEL LINTELS
• Standard: To BS EN 845-2.
• Manufacturer: Contractor's choice .
- Product reference: site specific .
• Types: site specific .
• Material/ finish: Austenitic stainless steel to BS EN 10088 .
• Sizes: site specific .
• Additional requirements: site specific .
• Placement: Bed on mortar used for adjacent work.
- Bearing length (minimum): 100 mm or manufacturers recomendation of greater .

760 COPING UNITS
• Standard: To BS 5642-2.
• Material: site specific .
• Manufacturer: Contractor's choice .
- Product reference: site specific .
• Dimensions: As shown on drawings site specific .
• Finish: To match sample .
• Mortar for bedding/ jointing: Cement gauged as section Z21.
- Standard: To BS EN 998-2 .
- Mix: site specific .
- Additional requirements: site specific .
• Joints: Full and finished flush.
• Placement: Lay on a full bed of mortar, to line and level.

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