This paper discusses the accuracy of a finite element model of a coupled piping system subjected to earthquake loads, as well as the differences in seismic behavior between coupled and welded piping system models. The test setup of a Victaulic coupled piping system tested at Lehigh University was modeled and analyzed with finite element methods. Two models were developed: (1) a welded pipe mode...

Piping akibat erosi internal dapat menyebabkan kegagalan struktur pada bendungan urugan. Pembentukan piping yang dimulai bagian hilir kaki dipengaruhi oleh gradien kritis material (Ic) dan hidrolik keluaran (Ie). Nilai perbandingan kedua parameter tersebut apabila melampaui batas tertentu memicu terbentuknya piping. Selain itu, untuk mengurangi risiko maka debit rembesan diizinkan adalah tidak ...

In the process of piping development, sediment carried by seepage causes change porosity and then permeability coefficient. Therefore, belongs to muddy water (i.e., unstable seepage). Based on theory seepage, new control equation model is established. The generation mechanism development for white fine sand gravel are explored. advantages discussed. results show that not only simpler in form bu...

Temperature Classifications..................................................... 12.1 CLOSED WATER SYSTEMS.................................................... 12.2 Method of Design ..................................................................... 12.2 Thermal Components ............................................................... 12.2 Hydraulic Components ...................................

OBJECTIVES To evaluate exposure to lead and other metals from drinking water as a result of the materials used for pipes in the supply areas of the Basque Country (Spain). METHOD Random sampling of properties in the supply areas was carried out. A total of 3,295 samples were taken in 154 areas, which together represented 87% of the properties supplied in our region. A method known as random d...

In piping the defects play a key role for determining the life of component. Also the risk for pipe failure combined to the defects has to be taken into account. In this study thermal dynamic load has been applied to austenitic material (Aisi 304) in order to introduce dynamic behaviour into the crack. The studied crack (~20 mm ! 7 mm) has been produced by thermal fatigue in advance. Different ...

Seepage failure in the form of piping can strongly influence the stability of block-in-matrix-soils (bimsoils), as well as weaken and affect the performance of bimsoil structures. The multiple-factor evaluation and optimization play a crucial role in controlling the seepage failure in bimsoil. The aim of this study is to improve the ability to control the piping seepage failure in bimsoil. In t...