according to the irrigation systems design standards, allowed pressure variation in lateral pipes is 20 percent. reasons for this rate selection, which since the 60's is performed, are not known. the increased changes in allowed pressure tubes to lateral pipes design, the increased sprinkling system required pressure and the increased nonuniform sprinkler distribution, so energy supply cos...

This paper aims at reviewing the current advancements of high pressure experimental geosciences. The angle chosen is that of in situ measurements at the high pressure (P) and high temperature (T) conditions relevant of the deep Earth and planets, measurements that are often carried out at large facilities (X-ray synchrotrons and neutron sources). Rather than giving an exhaustive catalogue, four...

One of the main concerns to design earth dam is the stability of the upstream slope of the earth dam in phase of rapid drawdown. Confined pore water pressure reduces the effective stress in this mode, so possibility of the instability and slippage will be increased. The main goal of this research is to investigate changes in the pore water pressure by using horizontal drains in upstream slope o...

Abstract The Kretek 2 Bridge was built over the Opak River where there is an active fault. According to bore log data and embankment site analysis, potential for liquefaction at a depth of 0 - 3 meters. Due space limitations, ramp bridge must be able stand upright. An alternative treatment that can implemented in this condition reinforce with Mechanically Stabilized Earth Wall system. Analysis ...

Various earth-retaining structures are extensively used in different civil engineering projects. Using the results of experimental and numerical modeling, effect earthquake loading on distribution earth lateral pressures basement walls was investigated. The UBCHYST constitutive model performed simulations, using 12 centrifuge dynamic tests, a calibration process conducted to obtain proper input...