design of bandhara / weir dam gates using plastic materials_design directions_2010
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DESIGN DIRECTIONS helps companies realize their dreams we design products, graphics, interfaces and perceptions..
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KT WEIR
Micro irrigation dams
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Current scenario:
• Govt Of India puts in lot of investment to build the micro dams such that farmers can get water for irrigation post the monsoon season and till the onset of next rains
• Most of the gates get stolen (As MS has a good resale value) or they rust with in 2 to 3 years – there by loss to the Government and the farmers.
• Max height of these dams is 5 mts.• These gates are removed just before monsoon and reinstalled after
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• These gates are removed just before monsoon and reinstalled after the season is over. Thus prone to theft in this period
• Each gate is 2000 mm X 500 mm X 4 mm thick MS Plates• Weight of each gate is @ 84 Kgs• Very heavy and cumbersome to install• Prone to water leakage due to use of an old and faulty design
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Objective:
• To design the K T weir gates in a material which would last longer• Should be easy to install and idiot proof• Should have less value for resale• Should be available at a right price point• Should look interesting and attractive• Should instill confidence that the gates will work as desired
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A typical KT bandhara or KT weir dam
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Walkway above dam
Water at upstream side
Concrete dam
Downstream side
Flow of water
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Flow of water at the dam
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Metal channel for aligning gate needles
Metal needle
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Dam
Dam opening seen from above
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Metal Needle
Dam
Downstream side
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Upstream side
Direction of water pressure
A metal gate needle installed at a KT dam
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Standard K T Weir Dam
Seepage of water is a failure
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Standard K T Weir Gates
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Standard K T Weir Gates
Seepage of water is a failure
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Standard K T Weir Gate
Rusting / Pitting
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Standard K T Weir Gates
Storage during monsoon
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Standard K T Weir Gates
Difficult to remove from channels due to use of cement
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KT WEIR
Micro irrigation dams
Pictures of the first rotationally molded
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Pictures of the first rotationally moldedprototype
Concept works……………………..
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Water level rises after all gate needles are installed
Gate needle
Vertical channel
Sealing
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Maximum water head depends upon no. of gates needles installed
(water head of 7.5 m / 15 gate needles is to be considered for design)
Concrete dam
Side view of the dam
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Rotomolded Gate needle (Design to be validated)
Water pressure
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Channel
Support surface
@40mm
Water pressure loading on the needle
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second prototype
Material of Construction: LLDPE
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Grade - Reliance – LL 36 RA 045 UV
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make things as simple as possible, but not simpler
albert einstein
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Thank you
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