Transmission Lines | Foundation 

Watch in HD how Transmission Line Foundation are Constructed
Mostly we only recognize pylons and cables when we see a transmission line. This video contains details how the base for the massive structure is constructed.
Foundations of any structure plays on important role in safety and satisfactory performance of the structure as it transmits the loads from structure to earth. The towers legs are usually set in concrete which generally provides good protection to the steel. Without having a sound and safe foundation, structure cannot perform the functions for which it has been designed. Therefore, the importance of foundation needs not to be over emphasized.
The sizes of transmission line tower are increasing because of the present day high, extra high and ultra-high voltage transmission, resulting in heavier loads and as such requiring bigger and heavier foundations. Past records show that failures of tower foundations results in collapse of towers. These failures have usually been associated with certain deficiencies either in the design which or construction of foundation. From engineering point of view, task of design and selection of most suitable type of tower foundation is challenging because of the variety of soil conditions encountered in the transmission line and remoteness of construction sites. The foundations in various types of soil have to be designed to suit the soil conditions of particular type.
Topics covered in this video are
#TrialMixDesign
#SoilInvestigation
#FoundationDrawing
#PitMarking
#Excavation
#Compaction
#StubSetting
#PCC
#ReinforcementBinding
#FormBoxWork
#ConcreteQualityCheck
#RCC
#TarcoatImplementation
#Backfilling
#WhitePUImplementation
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