What is liner plate? Sketch the types of liner plates
Liner plates are generallymade of 400 mm x 900mm with 50mm flange on all foursides. Another common size is 400 mm x 950 mm. I beams or T beams are used asstiffenersforstrengthening the liner platesfor tunnels of diameter greater than 3 m. Advantages: Easy to handle as they are light in weight. Saving in excavation and concreting work
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