Bøger af Jitendra Singh Yadav

The book presents empirical information on the socio-economic profile of the tribal poultry owners. This book would bring into focus the existing poultry farming practices regarding housing, feeding, breeding, production, management, healthcare and marketing of poultry and poultry products followed by tribal poultry owners which will further reflect their knowledge and skill in this particular enterprise. In addition, would provide an insight into the constraints/problems in rural poultry production as experienced by poultry owners in order to search and suggest appropriate strategies/model for backyard poultry farming. Finally, the extension strategies and SHG approach on backyard poultry farming will help the planners, policymakers, scientists, change agents, extension workers, NGOs and all those concerned with developmental activities to promote sustainable development.

An experimental program was undertaken to study the effect of inclusion of pond ash and randomly distributed polypropylene fibres on the strength behaviour of cement-stabilized clayey soil. In the present investigation, 19 combinations of fibre-reinforced cement-stabilized clayey soil-pond ash mixes at three different percentages of pond ash (i.e. 10, 20 and 30%) and two different percentages of polypropylene fibres (i.e. 0.5 and 1%) of length 6 and 12 mm with 5% cement content were prepared. The combinations of clayey soil-cement-pond ash fibres were subjected to a series of standard proctor test, unconfined compressive strength and split tensile strength tests. Based on favourable test results obtained, it can be concluded that partial replacement of cement-stabilized clayey soil by pond ash with the inclusion of polypropylene fibres causes a significant increase in strength, decrease in the stiffness, and rate of loss of post-peak strength. The fibre inclusion changed the brittle behaviour of the composite to ductile. The inclusion of 1% fibres of 6 mm length or 0.5% fibre of 12 mm length has the same impact on the unconfined compressive strength and split tensile strength.

A helical piling is a circular, hollow, steel pipe section (shaft) with one or more tapered steel plates (helixes) welded to the shaft. The plates are shaped as a helix with a carefully controlled pitch, which allows the pile to be inserted into the ground with minimal soil disruption. The central shaft is used to transmit torque during installation and to transfer axial loads to the helical plates upon foundation loading. The central shaft also provides a major component of the resistance to lateral loading. The pile is directed toward the soil and mechanically rotated with constant downward pressure, advancing the pile into the soil. Once installed, the pile has bearing capacity in both tension and compression in the subsurface by transferring the structures load to the bearing stratum.