Difference between revisions of "Piers and trestles"

From Coastal Wiki
Jump to: navigation, search
(16 intermediate revisions by 5 users not shown)
Line 1: Line 1:
{{
+
This article gives a short introduction in the application of piers and trestles.  
Definition|title=a Pier
 
|definition= Rather long structure with a horizontal deck on series of piles extending perpendicular to the coast into the sea. Serving as a landing place for vessels, as a recreation facility, as a measuring facility for coastal processes or as a part of sand by-pass facility.
 
}}
 
  
[[Image:pl_sop_molo_2004.jpg|thumb|right|250px|[[Sopot]] Longest wooden pier in Europe - 450 meter from bank, 650 whole]]
+
==Introduction==
 +
Piers are rather long structures with a horizontal deck on series of piles extending perpendicular to the coast into the sea. Piers and trestles are constructed to serve as a landing place for vessels, as a recreation facility, as a measuring facility for coastal processes or as a part of [[Sand by-pass system|sand by-pass facility]]. Figure 1 shows an example of a pier.
  
The aims to construct piers and trestles are in fact sufficiently mentioned in the preceding definition of this type of structures. Only the possible impact of these structures on the coastal processes needs some discussion. The supporting piles might cause some impact. Especially if the number of piles is rather large and/or with large diameters of the piles, obliquely arriving waves will cause an area with reduced wave heights in the lee of the structure. The sediment transports will be reduced as well; spots with some accretion might occur (in general at both sides since waves will approach from both sides). Especially for measuring piers this might yield a-typical measuring conditions.
+
[[Image:pl_sop_molo_2004.jpg|thumb|right|350px|Figure 1 Longest wooden pier in Europe (Sopot, Poland) - 450m from bank, 650m in total]]
  
[[Category:Theme 8]]
+
==Possible impact on coastal processes==
[[Category:Coastal erosion]]
+
The supporting piles of these structures may have an impact on coastal processes. Especially if the number of piles is rather large and/or with large diameters of the piles, obliquely arriving waves will cause an area with reduced wave heights in the lee of the structure. The sediment transports will be reduced as well; spots with some [[accretion]] might occur (in general at both sides since waves will approach from both sides). Especially for measuring piers this might yield a-typical measuring conditions.
[[Category:Erosion management]]
+
 
[[Category:Geomorphological processes and natural coastal features]]
+
==See also==
[[Category:Urban coastal areas]]
+
* [[Types and background of coastal erosion]]
[[Category:Protection of coastal and marine zones]]
+
* [[Dealing with coastal erosion]]
 +
* [[Hard coastal protection structures]]
 +
 
 +
==References==
 +
 
 +
 
 +
{{author
 +
|AuthorID=11540
 +
|AuthorName= Jan van de Graaff
 +
|AuthorFullName= Jan van de Graaff}}
 +
 
 +
[[Category:Coastal protection]]
 +
[[Category:Hard structures]]

Revision as of 15:59, 28 June 2019

This article gives a short introduction in the application of piers and trestles.

Introduction

Piers are rather long structures with a horizontal deck on series of piles extending perpendicular to the coast into the sea. Piers and trestles are constructed to serve as a landing place for vessels, as a recreation facility, as a measuring facility for coastal processes or as a part of sand by-pass facility. Figure 1 shows an example of a pier.

Figure 1 Longest wooden pier in Europe (Sopot, Poland) - 450m from bank, 650m in total

Possible impact on coastal processes

The supporting piles of these structures may have an impact on coastal processes. Especially if the number of piles is rather large and/or with large diameters of the piles, obliquely arriving waves will cause an area with reduced wave heights in the lee of the structure. The sediment transports will be reduced as well; spots with some accretion might occur (in general at both sides since waves will approach from both sides). Especially for measuring piers this might yield a-typical measuring conditions.

See also

References

The main author of this article is Jan van de Graaff
Please note that others may also have edited the contents of this article.

Citation: Jan van de Graaff (2019): Piers and trestles. Available from http://www.coastalwiki.org/wiki/Piers_and_trestles [accessed on 8-08-2020]