The plate making up the structures are connected by high strength bolts of grade not lower than 8.8. Their length varies with the thickness of the steel plates. Generally shorter bolts will be used to join two plates, longer bolts for three plate laps. Nuts should be situated from inside of culvert for bottom an corner plates, but in top plates the nuts should be situated from outside of culvert.
When designing the structure plate culvert pipe durability should be considered with regards to:
- zinc coatings
- paint coatings
-sacrificial thickness of steel as allowance for corrosion
(increasing of the plate thickness)
- other kinds of protections
The plate making up the structures are connected by high strength bolts of grade not lower than 8.8. Their length varies with the thickness of the steel plates. Generally shorter bolts will be used to join two plates, longer bolts for three plate laps. Nuts should be situated from inside of culvert for bottom an corner plates, but in top plates the nuts should be situated from outside of culvert.
Highway Construction 
Mine Projection 
Municipal Engineering 
Irrigation Engineering 
Railway Construction Projection 
Other Application 
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