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electric pontoon boat
Information on the Howrah Bridge?
Can anyone give me any information there is on the Howrah Bridge in India? I am looking particularly for structural (dimensions, materials, bridge type, etc) and historical information (when it was built, how it was built, why it was built, etc).
thank you very much!
structural information:-
Bridge type : Suspension type Balanced Cantilever
Central span 1500 ft between centers of main towers
Anchor arm 325ft each
Cantilever arm 468ft each
Suspended span 564ft
Main towers are 280ft high above the monoliths and 76 ft apart at the top
Bridge deck width 71 ft with two footpaths of 15 ft either side
Other features of the Bridge:-
All members of the super structure comprise built up riveted sections with a combination of high tensile and mild steel
Between towers bridge deck hangs from panel points in the lower chord of the main trusses with a series of hungers(39 pairs)
Road way beyond the tower is supported on ground leaving anchor arm free from deck loads
Bridge deck comprises 71 ft carriage way and 15 ft footway projecting either side of the trusses and braced by a longitudinal fascia girder.
Joint System of Bridge (Expansion Joints):-
Longitudinal expansion and lateral sway movement of the deck are taken care of by expansion and articulation joints.
There are two main expansion joints, one at each interface between the suspended span and the cantilever arms.
There are expansion joints at the towers and at the interface of steel and concrete structures at both approach.
Articulation Joints:-
There are total 8 articulation joints.
3 at each of the cantilever arms.
2 in the suspended portions.
They divide the bridge into segments with vertical pin connection between them to facilitate rotational movements of the deck.
Camber and Traffic clearance:-
Bridge deck has longitudinal ruling gradient of 1 in 40 from either end
They are joined by a vertical curve of radius 4000 ft.
Cross gradient of deck is 1 in 48 between kerbs and central 4.9mtr. is level to provide tramway housing channel in between troughing.
Foundation:-
The main tower is founded with single monoliths which are 55.31 x 24.8 m in plan with 21 chambers
Monoliths at Calcutta and Howrah side are founded 31.41 m and 26.53 m in below ground level respectively.
Minimum headroom in carriageway is 5.8 m
Freeboard for river traffic is 8.8 m
historical information:-
The end of the 17th Century Kolkata witnessed the gradual emergence of the city of Kolkata brought about by the merger of three villages - Kolkata, Sutanati & Gobindapur, on the eastern bank of the river Hooghly, the other name of River 'Ganga'. On the western bank, Howrah came up as a bustling site of commerce.
The twin cities of Calcutta (re-named as Kolkata in the year 2001), and Howrah , were separated by the River Hooghly, and shared a common historical linkage towards the eventual construction of the Rabindra Setu, more commonly known as Howrah bridge. While Kolkata, from a small sleeping hamlet of artisans and mercantile community eventually developed , as a commercial hub of a modern metropolitan city , Howrah (virtually the store house of raw material resources) became its industrial satellite.
Kolkata was declared the capital of India by the British and remained so till 1911. The railway station at Howrah set up in the year 1906 and the bridge (later popularly known as Howrah Bridge) thus served as the logistic link with the country's one of the oldest metropolies, Kolkata. The Legislative department of the then Government of Bengal passed the Howrah Bridge Act, in the year 1871, under the Bengal Act IX of 1871.
Sir Bradford Leslie's famous floating pontoon bridge, the earlier avatar of the modern Howrah Bridge, was initially set up in 1874, almost coinciding with the establishment of the port of Calcutta in 1870 (www.kolkataporttrust.gov.in).
For the convenient plying of passenger and vehicular traffic, the pool was connected as a whole. However, this was unfastened everyday, particularly during the night for safe passage of steamers, boats and other marine vehicles. From 19th August, 1879, the bridge was illuminated by fixing electric poles at the centre.This was done by using the electricity rendered from the dynamo at the Mallick GhatPumping Station. The Bridge was then 1528 ft. long and 62 ft. wide. On both sideswere pavements 7 ft. wide for the sake of pedestrians. The 48 ft. road in between,was for plying of traffic."
The emergence of Kolkata as the political capital of the nation and expanding volume of merchandise routed through the port of Kolkata had a synergistic effect on the commercial importance of the bridge. The location of the initial pontoon bridge, was around 100 yards down-stream of the present Howrah Bridge (renamed as Rabindra Setu in the year 1965) after Rabindranath Tagore, the philosopher - bard and one of the most important nineteenth century renaissance personalities to leave a lasting impression on modern India
for more information please cheak link-
http://www.howrahbridgekolkata.gov.in/
www.kolkata.org.uk/tourist-attractions/howrah-bridge.html
www.indfy.com/west-bengal/kolkata/tourist.../howrah-bridge.html
www.holidayiq.com/howrah-bridge.php
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Electric deck
{ 3 comments }
please design a plane and test it
You are right…perfect beach, perfect day! I so envy you being so close to a beach! The water is just beautiful! We have a pontoon boat on a close lake but it is runoff water and so full of silt that it look brown/grey. I’ll take it anyway…it’s water!
Hi.
I suppose the internet's the best for your needs right now – all the very best for the future my friend.
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