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The design of all structural steel work such as roof trusses, steel sheds, pipe racks, pipe bridges, tank supporting platforms, stairs, ladders, walkways, crane girders, steel enclosures etc. will be carried out in accordance with IS: 800-2007. Design, fabrication and erection of the above work shall be carried out in accordance The PIP Structural Design Criteria recommends a uniformly distributed load of 40 psf for pipe, which is equivalent to 8-in.-diameter schedule 40 pipes filled with water at 15-in. Spacing. Other uniform loads may be used based on client requirements and engineering judgment. DBPB Design Basis Pipe Break DCD Design Control Document DFL Dynamic Fluid Load DLF Dynamic Load Factor GDC General Design Criterion ISM Independent Support Motion LBB Leak-Before-Break LOCA Loss-of-Coolant Accident MS/FWPB Main Steam / Feedwater Pipe Break NPS Nominal Pipe Size NRC U.S. Nuclear Regulatory Commission Login to manage the site Authentication Provider an overall approach for design under blast external loads is still missing. Some design strategies are also recommended aiming to ensure increased robustness in building structures that are to endure localized failure. However, no guidelines are provided in EN 1991-1-7 for the calculation of external blast induced loads. Pipe racks are important structures in industrial plants. They are used within or to connect operating units, or longer distance for plant extension operations. For a large industrial facility, it can be feasible to utilize combined construction methods ‒ modules, pre-assembled units (PAUs) and/or stick-built construction at job site ‒ to Officials (AASHTO) LRFD Bridge Design Specifications. The height of cover tables will vary when a different design method is followed. An HL-93 live load structural check determines if an HS-20 or a tandem axle vehicle controls. For other design load considerations, please contact your local Contech representative. Design Sequence 1. The original design had 30psf Lr where as now code only requires 20psf. The current loading has 11psf more DL due to the pipe and over 13psf more of ice load. When comparing the original loading to the current (see attached PDF), the ASD combination spits out a way different max loading than LRFD. fSteps for Design 1. Geometry Modeling. (Dimensions, Section Properties, etc) 2. Loading. (Application of all possible loads) 3. Design Parameter (Kz, Ly, Lz, UNL, ) 4. Analyzing & Design. (Check your modal, revise and change as needed) 5. Connection. By Spread Sheet or by StaadPro if Connection Module is available. Geometry • Load combinations may use strength design or allowable stress design • Load combinations are not all inclusive • Design should be based on the load combination(s) machine above existing pipe rack; C p = 4,900 lbs Existing pipe. Design Loads During Construction Failure during Construction The pipe rack supports four runs of 12-in.-diameter pipe carrying naphtha on the top tier and four runs of 8-in.-diameter pipe carrying water for fire suppression on the bottom tier. The minimum seismic dead load for pipin