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…
It is a simple presentation that explains briefly about the purification of water by chlorination.There are many advantages as well as some disadvantages of the process of chlorination and the same is discussed in this presentation.
Some of the advantages…
Download Presentation on Construction Machinery Planning and Employment [pptx/pptx]
August 28, 2014
The term,” engineer construction machinery” covers a very wide range of machines. Earth moving machines and cranes are grouped under the term, “c” vehicles. Others such as pavement layers and finishers, compressors, road rollers, pumps and…
Download Geotechnical Consideration in design of Pile Foundation [ppt] - Civil Engineering Presentations
August 28, 2014
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…
Analysis of Different Hydraulic Parameters on the Structural Design of Dharma Nullah Bridge Taxila [PPT]
July 10, 2014
Project Title
Analysis of Different Hydraulic Parameters on the Structural Design of Dharma Nullah Bridge Taxila
Project Abstract.
The purpose of this project is to thoroughly study the various parameters affecting the hydraulic design of a bridge and studied various methods…
Beams having span/depth ratio of simply supported beam is < 2, continuous beam < 2.5, it is classified as deep beam. Such structures are found in transfer girders and in shear wall structures that resist lateral forces in buildings. It is also…
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…
Inspection, Evaluation, Rehabilitation, Maintenance and Retrofitting of Bridges
June 13, 2014
A special task force to investigate the collapse of the bridges.A committee, formed at the direction of this task force.All bridges longer than 20ft were required to be described and registered in a national database and thus the National Bridge Inventory (NBI) was…
Combustion is a process by which any thing burns, in our industries and in our vehicles we utilize this process to get some energy and then some power. But these combustion processes are not prefect and thus we have some emissions along with it which produces many harmful…
