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Homepage
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BS Standards
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91 CONSTRUCTION MATERIALS AND BUILDING
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91.140 Installations in buildings
91.140.01 Installations in buildings in general
91.140.10 Central heating systems
91.140.30 Ventilation and air-conditioning systems
91.140.40 Gas supply systems
91.140.50 Electricity supply systems
91.140.60 Water supply systems
91.140.65 Water heating equipment
91.140.70 Sanitary installations
91.140.80 Drainage systems
91.140.90 Lifts. Escalators
91.140.99 Other installations in buildings