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CABLOFIL STEEL WIRE CABLE TRAY

PRODUCT GUIDE

DESIGN NOTES

SELECTING THE RIGHT FINISH

Suitability of finishes

114

Preventing corrosion

114

- Chemical (atmospheric) corrosion

114

- Electrochemical (galvanic) corrosion)

114

- The merits of Zinc

115

- Common corrosion situations

115

FINISHES

Coated steels

116

- Pre-galvanised (GS)

116

- Electrogalvanising after manufacture (EZ)

116

- Hot dip galvanised after manufacture (GC)

116

- Geomet (DC)

116

- Organically coated electrogalvanised after manufacture (EZ+) 116

- Continuous galvanisation before manufacture (Z+)

116

Stainless steels

- Stainless steel (304L)

117

- Stainless steel (316L)

117

Pickling and passivation

117

INSTALLATION OF SERVICES

Design factors to consider

118

- Distributed loads

118

- Point loads

119

- Snow, wind and external forces

119

- Safety factor

119

- Deflection

119

- Spacing of supports

120

- Location of couplers

120

- Installation of cables within a support system

121

- Testing of cables within a support system

122

- Electrical continuity

123

- Earth protection

124

- Electromagnetic compatibility (EMC)

124

Loading graphs

125

FIRE RESISTANCE AND PROTECTION

- Standard DIN 4102-12

126

- Recognised independent laboratories

126

- Test configuration

126

- Samples of configurations tested

127

113