Corrugated steel culvert pipe structures are approved by most of American road and railways administrations and national standards. They are manufactured in accordance to American and Australia standard.
Steel used for multi plate MP150 is produced in accordance with Chinese standard.
Minimum yield strength 235N/mm2 and 345N/mm2
Steel standard Q235 and Q345
Also can accordance with EN10025
Steel standard S355JR, S235JR, S315MC
And can adopt the other standard steel according to customers’ demand
2.Depth of cover
The minimum allowable depth of cover is the largest of:
For roads H=B/8+0.2(m) H=B/6(m) and not less than 0.6(m)
For railways H=B/4 and not less than 0.6(m)
There is a possibility to reduce depth of cover provided that suitable checking calculations will be made.
Corrosion resistance of steel is the main factor deciding about the durability of steel structures. Long-term tests done in many countries of world have proven that, the proper corrosion protection of the steel structure let to prolong the life time of structures. Durability of structures built with use of multiplate 150 designed for the zinc coatings give the so-called cathode protection. Thanks to this they can protect the steel also in electrochemical way achieving the multi-elemental corrosion protection system.
Attention: in strong corrosion environment, we suggest hot-dip plastic on the galvanization, plastic thick 0.3mm, (single face dip), the durability is more than 100 years.
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