AS 1639-1990

1 - AS 1639-1990 THE DESIGN AND INSTALLATION OF CORRUGATED FIBRE-REINFORCED CEMENT ROOFING AND WALL CLADDING
4 - PREFACE
5 - CONTENTS
6 - SECTION 1. SCOPE AND GENERAL
6 - 1.1 SCOPE.
6 - 1.2 REFERENCED DOCUMENTS.
6 - 1.3 DEFINITIONS.
6 - 1.3.1 Preformed sheet
6 - 1.3.2 Accessories
6 - 1.3.3 Span
6 - 1.3.4 Loaded panel
6 - 1.4 RESISTANCE TO WIND FORCES.
7 - SECTION 2. MATERIALS
7 - 2.1 FIBRE-REINFORCED CEMENT SHEETING.
7 - 2.2 OTHER MATERIALS.
7 - 2.3 FASTENINGS.
7 - 2.4 SEALANTS AND WASHERS.
7 - 2.4.1 Diamond washers.
7 - 2.5 SAFETY MESH.
7 - 2.5.1 Requirements
7 - 2.5.1.1 General
7 - 2.5.1.2 Loading
7 - 2.5.2 Deemed to comply
8 - SECTION 3. DESIGN
8 - 3.1 GENERAL.
8 - 3.2 LOADINGS.
8 - 3.2.1 General.
8 - 3.2.2 Construction.
8 - 3.3 SUPPORTING STRUCTURE.
8 - 3.4 FIXING OF STRUCTURAL MEMBERS.
8 - 3.5 PURLINS AND BATTENS.
8 - 3.5.1 General.
8 - 3.5.2 Alignment.
8 - 3.5.3 Batten joints.
8 - 3.5.4 Width and depth.
8 - 3.6 ROOFS.
8 - 3.6.1 Roofs with end laps.
8 - 3.6.2 Roofs without end laps.
8 - 3.6.3 Side laps.
8 - 3.7 ROOF DRAINAGE.
9 - 3.8 SAFETY MESH.
9 - 3.9 WALKING AND STANDING ON ROOFS.
9 - 3.9.1 Walkways.
9 - 3.9.2 Notices.
9 - 3.10 FLASHING AND PROJECTIONS THROUGH ROOFS.
9 - 3.10.1 Ventilators and roof lights.
9 - 3.10.2 Projections through roofs.
9 - 3.11 EAVES AND GABLE ENDS.
9 - 3.12 TOP EDGES AND ABUTMENTS.
9 - 3.12.1 Top edges.
9 - 3.12.2 Abutments.
9 - 3.13 MOVEMENT JOINTS.
10 - SECTION 4. INSTALLATION
10 - 4.1 SAFETY PRECAUTIONS.
10 - 4.2 CUTTING AND DRILLING.
10 - 4.3 SUPPORTS AT HIPS AND VALLEYS.
10 - 4.4 POSITION AND FIXING OF THE SAFETY MESH.
10 - 4.4.1 General.
10 - 4.4.2 Relevant positions of longitudinal and transverse wires.
10 - 4.4.3 Joints in longitudinal
10 - 4.4.4 Joints between adjacent lengths of mesh.
10 - 4.4.5 Fixing.
10 - 4.4.6 Corrosive atmospheres.
10 - 4.5 LAYING THE SHEETING.
11 - 4.6 FIXING THE SHEETS.
11 - 4.6.1 General.
11 - 4.6.2 Fixing to timber purlins.
11 - 4.6.3 Fixing to steel purlins or girts.
11 - 4.6.4 Sealing.
11 - 4.6.5 Number of fastenings.
11 - 4.7 FIXING FIBRE-REINFORCED CEMENT ACCESSORIES.
12 - APPENDIX A - GUIDANCE NOTES ON ROOF VENTILATION
12 - A1 CONDENSATION.
12 - A2 VAPOUR BARRIERS.
13 - APPENDIX B - DETERMINATION OF RESISTANCE TO WIND FORCES BY TEST
13 - B1 SCOPE.
13 - B2 PRINCIPLE.
13 - B3 APPARATUS.
13 - B3.1 General.
13 - B3.2 Strengthening of the supporting structure.
13 - B3.3 Loading system.
13 - B3.4 Deflection measurement device.
13 - B4 TEST SPECIMEN.
13 - B4.1 General.
14 - B4.2 Width of the specimen.
14 - B5 PROCEDURE.
14 - B5.1 General.
14 - B5.2 Working load test.
15 - B5.3 Ultimate load test.
15 - B6 REPORT.
16 - APPENDIX C - SAFETY MESH - LOAD TEST
16 - C1 SCOPE
16 - C2 PRINCIPLE
16 - C3 APPARATUS
16 - C3.1 Test frame
16 - C3.2 Test loads
16 - C3.2.1 Dynamic
16 - C3.2.2 Static
16 - C4 TEST SPECIMEN
16 - C5 PROCEDURE
16 - C6 REPORT

Specifies requirements for materials, design and installation of corrugated fibre-reinforced cement roofing and cladding. All references to asbestos cement have been deleted and the scope has been extended to include cladding for walls and test requirements for resistance to wind loads.

This Standard sets out requirements and recommendations for materials, design and installation of corrugated fibre reinforced cement roofing and wall cladding.NOTE: Advice on the provision of roof ventilation is included in Appendix A.

Available Superseded
Under Revision see DR 98495 CP