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What is Tunnel Boring Machine (TBM), Advantages and Features

TMB is used as an alternative to drilling and blasting (DB) methods. TBMs are used to excavate tunnels with a circular cross section through a variety of subterranean matter; hard rock, sand or almost anything in between. As the TBM moves forward, the round cutter heads cut into the tunnel face and splits off large chunks of rock.  the cutter head carves a smooth round hole through the rock…
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Download Geotechnical Consideration in design of Pile Foundation [ppt] - Civil Engineering Presentations

Piles are the columnar elements in the foundations which have function of transferring loads from super structure through week compressible strata or through water onto stiffened or more compact and less compressible soils.  What are piles? They may be required to carry uplift loads when used to support tall structures subjected to overturning forces from wind or waves.  Piles used in marine…
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Geometric Design of Rural Roads and Urban Streets [PPT/PPTX]

This report presents guidance on the application of geometric design criteria to facilities functionally classified as local roads and streets. The report is subdivided into sections on rural roads, urban streets.A local road or street serves primarily to provide access to farms, residences, businesses, or other abutting properties. Although local roads and streets may be planned, constructed…
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