Difference between revisions of "13.1 - High Durability floor deck"

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'''Back to main [[Contents]] page'''
 
 
 
 
 
'''What is HIGH DURABILITY HD?'''
 
'''What is HIGH DURABILITY HD?'''
  
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'''Benefits:'''
 
'''Benefits:'''
: • Improved corrosion resistance with similar coating thickness
+
*Improved corrosion resistance with similar coating thickness
: • Suitable for aggressive environments (e.g. chloride and highly alkaline)
+
*Suitable for aggressive environments (e.g. chloride and highly alkaline)
: • Excellent cut-edge protection (self healing effect)
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*Excellent cut-edge protection (self healing effect)
  
  
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[[File:13.1a.jpg|400px]]
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[[File:13.1a.jpg|400px|link=]]
  
  
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The samples in Fig 13.1b and graph (refer Fig 13.1c) show comparison between the two coating options under salt spray test (highly chloride environment) carried out in the lab. Time scales for samples shown in Fig 13.1b are:
 
The samples in Fig 13.1b and graph (refer Fig 13.1c) show comparison between the two coating options under salt spray test (highly chloride environment) carried out in the lab. Time scales for samples shown in Fig 13.1b are:
: • HD after 34 weeks
+
*HD after 34 weeks
: • Standard Zinc after 6 weeks
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*Standard Zinc after 6 weeks
 
 
  
[[File:13.1b.jpg|400px]]
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[[File:13.1b.jpg|400px|link=]]
  
  
[[File:13.1c.jpg|400px]]
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[[File:13.1c.jpg|400px|link=]]
  
  
 
'''Where could HD deck be used?'''  
 
'''Where could HD deck be used?'''  
: • External locations
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*External locations
: • Car Parks
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*Car Parks
: • Areas identified as aggressive environments (i.e. category C2-C3 or above)
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*Areas identified as aggressive environments (i.e. category C2-C3 or above)
  
  
 
'''HD Product Specification'''
 
'''HD Product Specification'''
: • Coating weight - 310 g/m2 (total for both sides)
+
*Coating weight - 310 g/(total for both sides)
: • Coating thickness - 25μm per side
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*Coating thickness - 25μm per side
: • Structural steel grade - S350 (350 N/mm2)
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*Structural steel grade - S350 (350 N/mm²)
  
  
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Thru-deck stud welding with HD:
 
Thru-deck stud welding with HD:
: • Suitability of stud welding tested in accordance with BS EN ISO 14555.  
+
*Suitability of stud welding tested in accordance with BS EN ISO 14555.  
: • Weld settings (WPS) for welding current, time, protrusion and lift available.
+
*Weld settings (WPS) for welding current, time, protrusion and lift available.
: • Un-painted top flanges still required (as always).
+
*Un-painted top flanges still required (as always).
  
  
 
'''Un-painted top flanges not suitable for the environment?'''
 
'''Un-painted top flanges not suitable for the environment?'''
  
Consider pre-studded beams (painted) with single span, crushed ends, deck sheets (refer to Section [[13.2 - Crushed ends deck sheets]]).
+
Consider pre-studded beams (painted) and single span deck sheets with crushed ends (refer to Section [[13.2 - Crushed ends deck sheets]]).
  
 
'''[https://smdltd.co.uk/wp-content/uploads/2016/06/1023.V2-High-Durability-A4-flyer-Mar-16.pdf Refer SMD Sheet 1023 High-Durability]'''
 
'''[https://smdltd.co.uk/wp-content/uploads/2016/06/1023.V2-High-Durability-A4-flyer-Mar-16.pdf Refer SMD Sheet 1023 High-Durability]'''
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Other items within 13.0 - Product options:-
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Go to '''[[13.2 - Crushed ends deck sheets|NEXT]]''' section
: [[13.1 - High Durability floor deck]]
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: [[13.2 - Crushed ends deck sheets]]
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: [[13.3 - VoidSafe™ Protection System]]
+
: [[13.4 - Perimeter toeboard]]
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: [[13.5 - Channel edge trim]]
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: [[13.6 - TAB-Deck™ – Fibre concrete]]
+
: [[13.7 - Off-site cutting]]
+
: [[13.8 - Service fixings]]
+

Latest revision as of 09:01, 15 August 2018

What is HIGH DURABILITY HD?

Our HD products provide the same structural capacity as our standard floor deck range but come with an enhanced metallic coating with a unique composition of Zinc, Aluminium and Magnesium.


Benefits:

  • Improved corrosion resistance with similar coating thickness
  • Suitable for aggressive environments (e.g. chloride and highly alkaline)
  • Excellent cut-edge protection (self healing effect)


The difference in coating

The dense and compact nature of the enhanced metallic coating used on the HD products (refer Fig 13.1a (left image)) provides superior corrosion resistance compared to the more porous structure provided by our standard Hot Dip Galvanised Z275 coating (refer Fig 13.1a (right image)).


13.1a.jpg


Corrosion behaviour - Salt spray test

The samples in Fig 13.1b and graph (refer Fig 13.1c) show comparison between the two coating options under salt spray test (highly chloride environment) carried out in the lab. Time scales for samples shown in Fig 13.1b are:

  • HD after 34 weeks
  • Standard Zinc after 6 weeks


13.1b.jpg


13.1c.jpg


Where could HD deck be used?

  • External locations
  • Car Parks
  • Areas identified as aggressive environments (i.e. category C2-C3 or above)


HD Product Specification

  • Coating weight - 310 g/m² (total for both sides)
  • Coating thickness - 25μm per side
  • Structural steel grade - S350 (350 N/mm²)


Composite beams

Thru-deck stud welding with HD:

  • Suitability of stud welding tested in accordance with BS EN ISO 14555.
  • Weld settings (WPS) for welding current, time, protrusion and lift available.
  • Un-painted top flanges still required (as always).


Un-painted top flanges not suitable for the environment?

Consider pre-studded beams (painted) and single span deck sheets with crushed ends (refer to Section 13.2 - Crushed ends deck sheets).

Refer SMD Sheet 1023 High-Durability




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