Scribd
Upload
12 views2 pages

EX - 02 Water Levels

The document outlines an engineering exercise focused on water levels related to coastal and harbor engineering. It includes calculations for wave setup, design water levels for different return periods, and assessments of marine element crest levels against overtopping criteria. The exercise requires the application of tidal data and storm surge considerations for a proposed breakwater and other marine structures.

Uploaded by

weyiwoc233
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
12 views2 pages

EX - 02 Water Levels

The document outlines an engineering exercise focused on water levels related to coastal and harbor engineering. It includes calculations for wave setup, design water levels for different return periods, and assessments of marine element crest levels against overtopping criteria. The exercise requires the application of tidal data and storm surge considerations for a proposed breakwater and other marine structures.

Uploaded by

weyiwoc233
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 2

Cairo University Coastal and Harbor Engineering

Faculty of Engineering IRH4342 - 2025

EX_02: Water Levels

1. Determine the wave setup corresponding to a propagating deep-water wave of 2.5 m high,
8 sec period, approaching at deep-water with an angle of 30 degrees (angle between wave
crest and contours in deep water).
2. For a location along the coast where a breakwater is proposed to be constructed, the below
table present the tidal planes at the nearest station to the project site.

Parameter CD (m)
Highest Astronomical Tide, HAT + 1.65
Mean Higher High Water, MHHW + 1.55
Mean Lower High Water, MLHW + 1.15
Mean Water Level, MSL + 0.90
Mean Higher Low Water, MHLW + 0.65
Mean Lower Low Water, MLLW + 0.35
Lowest Astronomical Tide, LAT + 0.10

Considering the above-mentioned tidal information besides the data provided in the table
below, determine the Design Water Level (DWL) for the 25- and 50-years design life. Note that
the beach slope is approximately 0.05 and roughly the critical condition can be considered
while calculating the storm surge.

Return High Water Wind Storm Design Water


Design Sea Level
Period, RP Level, HWL Speed, Uw Surge, Sw Level, DWL
Life (yrs) Rise, SLR (m)
(yrs) (mCD) (m/s) (m) (mCD)
25 50 ?? ?? 17 ?? ??
50 100 ?? ?? 23 ?? ??

3. For the port shown in the posted image, consider the data provided in the table below to
whether propose the marine element crest level or check the assigned crest level against
the defined overtopping criteria.
Marine Design Water
Design Runup, R Min. Crest
Element Description Level, DWL Design Details
Life (yrs) (m) Level (CL)
ID (mCD)
Hs = 1.1 m
1 Beach 25 + 1.80 Tp=6.5 sec ?? ??
Beach slope = 1:7

Marine Design Water Overtoppin Overtopping


Design
Element Description Level, DWL Design Details g Criteria, q Discharge, q
Life (yrs)
ID (mCD) (l/s/m) (l/s/m)
Hs = 1.3 m
Tp=7.2 sec
BW slope = 2:1 ??

Rubble- Bed level =-4 mCD (Mention if


2 Mound 1 the crest
Crest level =+3.5 level is
Breakwater
mCD sufficient or
Crest width = 4m not)

50 + 2.25 Angle of wave


attack = 15 deg.
Hs = 0.6 m
Tp=5.5 sec ??

Plain Bed level =-6 Mcd (Mention if


3 Vertical 0.3 the crest
Toe level is same level is
Wall
as Bed level sufficient or
Crest level not)
=+3.5mCD

Due Date:
Monday 17th March

You might also like