horbour & dock engineerin
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TRANSCRIPT
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PRESENTATION TOPIC: HARBOUR DOCK
ENGINEERING
GROUP MEMBERS: KASHIF ALI KHAN IZHAR AHMAD SEYED BAKTH JAMAL SHAH
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HARBOUR:› SHELTERED AREA› FOR LOADING AND UNLOADING OF CARGO› VESSELS ARE ALSO BUILT, REPAIR, AND
LAUNCH
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CLASSIFICATION:
1. NATURAL HARBOUR 2. SEMI NATURAL
HARBOUR 3. ARTIFICIAL HARBOUR
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NATURAL HARBOURS: A harbor, is a place
where ships, boats, and barges can seek shelter from stormy weather.
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SEMI NATURAL HARBOUR: Same as natural but
harbour needs some artificial and man made construction
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ARTIFICIAL HARBOUR: Harbour having no natural
protection but artificial arrangement are made to protect the harbour from storm and wind.
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REQUIREMENTS OF A GOOD HARBOR:› The depth of a harbor should be sufficient for
every type of visiting ships.› The bottom of harbor should provide secured
anchorage to hold the ships against high winds.› To prevent destructive wave action, break water
are provided.› The entrance of a harbor should be wide
enough to provide the easy passage of ships.
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DEFECTS IN HARBOR:› Depth of water is found insufficient for
different ships.› The size of harbor is found insufficient to
accommodate the increased traffic.› Obstruction› These defects can easily be avoided at the
time of planning and designing.
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SIZE OF A HARBOUR Size depends upon:
# of ships length:275m-300m width:30m
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HARBOUR PLANNING
It should be carried out after collecting necessary information of the existing features at the proposed site.
Following important facts should be studied.
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A thorough survey of the neighborhood including the foreshore & depths of water is necessary
Nature of a harbor wether sheltered or not, be studied
The existance of sea insects & various animals residing at site.
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Natural phenomena’s concerning planning of a harbour are:
Storms Rainfall Range of tides Maximum & minimum temperatures Direction & intensity of wind etc
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SITE SELECTION: Following factors play a
great role in the choice of site of a harbour.
1.Availability of cheap land & contruction material.
2.Natural protection from waves & winds 3.transport & communication facilities 4.industrial development of the locality
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5.Sea bed,sub soil & foundation conditions
6.Avaibility of electrical energy 7.Defence & strategic aspects 8.trafic potentiality of harbour
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FUNCTIONAL CLASSIFICATION:
1. HARBOR OF REFUGE 2. COMMERCIAL HARBOR 3. FISHRY HARBOR 4. MILLITARY HARBOR OR NAVEL BASE
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HARBOR OF REFUGE: The harbor used for
ships in storms or emergency condition.
good anchorage and safe and easy access from the sea.
e.g: DOVER IN ENGLAND
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COMMERCIAL HARBOR:Facilities for loading and
unloading of cargo are provided.The may be:
1. Part of bigger complex harbor
2. Independent unit or single commodity harbor.
3. Terminal as oil terminal, coal port.
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FISHRY HARBOR:Provided for fishing crafts and trawlers.
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MILLITARY HARBOR:This harbor is meant for
accommodating naval crafts and serves as a supply deport.
The layout of this type of harbor is greatly influenced by its location.
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FEATURES OF A HARBOR:1. Entrance Channels2. Berthing Basin3. Break Water4. Turning Basin5. Pier Head6. Wharves7. Jetties
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ENTRANCE CHANNEL:› Depth and width are kept more at entrance› Width depends upon density of traffic and
no: of entrances
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BERTHING AND TURNING BASINS:› Berthing basins are used for the parking of
ships› While turning for the turning of ships
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BREAK WATER:› The structure constructed to protect harbor
from storm waves› They are generally stone masonry
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PIER HEAD:› The structure provided at the tip of break
water› Such as light house
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WHARVES:› The structure constructed parallel to the
shore or break water, having wide plate form at the top
› Function is to permit berthing of vessel along side for cargo working
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JETTIES:› Same as wharves› Used for loading and unloading of cargo› Made usually from shore towards sea
water to prevent silting and dredging to allow free flow of tidal currents
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DOCK:› A dock is dug out and usually has gates so
that the water level is kept up even though the tide has gone out.
› A dock is for mooring ships for cargo or passenger exchange, or sometimes repair.
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HARBOR:› A harbour may be natural or partly dug
out, or even made with floating materials. It doesn't have gates, but may have a narrow entrance.
› Provides safe anchoring or mooring for ships
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PORTS:› A port is a location on a coast or shore
containing one or more harbors where ships can dock and transfer people or cargo to or from land.
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THANK YOU