Difference between revisions of "13.1 - High Durability floor deck"
(Created page with "'''Back to main Contents page''' Body - First line Body - Last line ---- Other items within 13.0 - Product options:- : 13.1 - High Durability floor deck :...") |
|||
| (5 intermediate revisions by 2 users not shown) | |||
| Line 1: | Line 1: | ||
| − | ''' | + | '''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)). | ||
| + | |||
| + | |||
| + | [[File:13.1a.jpg|400px|link=]] | ||
| + | |||
| + | |||
| + | '''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 | ||
| + | |||
| + | |||
| + | [[File:13.1b.jpg|400px|link=]] | ||
| + | |||
| + | |||
| + | [[File:13.1c.jpg|400px|link=]] | ||
| + | |||
| + | |||
| + | '''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]]). | ||
| + | |||
| + | '''[https://smdltd.co.uk/wp-content/uploads/2016/06/1023.V2-High-Durability-A4-flyer-Mar-16.pdf Refer SMD Sheet 1023 High-Durability]''' | ||
| Line 11: | Line 61: | ||
| − | + | Go to '''[[13.2 - Crushed ends deck sheets|NEXT]]''' section | |
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
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)).
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
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
Go to NEXT section
