نتایج جستجو برای: active lateral earth pressure
تعداد نتایج: 1031837 فیلتر نتایج به سال:
A computer model (SprinklerMod) was developed to simulate hydraulics of sprinkler irrigation systems. The objective of this paper is to describe mathematical background of this model for simulating pressures and discharges of sprinklers along the laterals. The model is capable of designing two types of laterals: laterals with fixed sprinklers and laterals with portable sprinklers. The model sho...
Abstract: The design of retaining walls requires the complete knowledge of the earth pressure distribution behind the wall. Due to the complex soil-structure effect, the estimation of earth pressure is not an easy task; even in the static case. The problem becomes even more complex for the dynamic (i.e., seismic) analysis and design of retaining walls. Several earth pressure models have been de...
Objective: there are still disputes over the effect of using slope strategy on the reduction of peak pressure and time of pressure on the foot. Therefore, the objective of this study was to evaluate the effect of internal and external wedge slope changes on the mechanical parameters of foot ulcers. Methods: In this quasi-experimental study 15 diabetic patients with an average age of 63.3&plusm...
Modern countries utilise buried pipelines for the long-distance transportation of water, oil, and gas due to their efficiency continuity delivery receiving locations. Due soil movements such as landslides, excessive earth pressure imposed on causes damage and, consequently, leaking liquids, gases or other harmful effluents into soil, groundwater, atmosphere. By using a large-scale physical mode...
Aims and background: The aim of this study was to compare peak pressure and time to peak pressure during normal walking between females with idiopathic chronic low back pain (LBP) and healthy controls. Materials and Methods: 10 females with chronic LBP and 11 healthy female participated in this study. LBP was measured using Quebec questionnaire. Plantar pressure was measured using emed platfor...
in this study, hydraulic properties of low pressure drip irrigation systems were studied under laboratory conditions and using of the pipes that exist in iran. therefore, effect of various heads from 0.45 to 1.8m was evaluated for lateral pipe with outside diameter 32mm and length of 16, 30, 60 and also the lateral pipe with length 16 and outside diameter of 16, 20, 25 and 32mm, on hydraulic ch...
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