design of bandhara / weir dam gates using plastic materials_design directions_2010

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An introduction to design of KT weir dams in materials that are more durable and lasting, that can replace the traditional MS materials being currently used.

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Page 1: Design of Bandhara / Weir Dam gates using plastic materials_Design Directions_2010

Managing Innovations

Managing Innovations

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Managing Innovations

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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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