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The Soldier Plate Carrier System (SPCS), known commercially as the KDH Magnum TAC-1, is a plate carrier developed for the U.S. Army which provides protection in accordance with if not greater than, the Improved Outer Tactical Vest. [2] The SPCS is a lighter alternative to the IOTV, with increased mobility and comfort.
Unlike an I-beam, a T-beam lacks a bottom flange, which carries savings in terms of materials, but at the loss of resistance to tensile forces. [5] T- beam designs come in many sizes, lengths and widths to suit where they are to be used (eg highway bridge, underground parking garage) and how they have to resist the tension, compression and shear stresses associated with beam bending in their ...
The Modular Scalable Vest (MSV) is a bullet-resistant vest that has been introduced by the United States Armed Forces in 2018.. The Modular Scalable Vest is replacing all other body armor systems in use, including the OTV (outer tactical vest), IOTV (improved outer tactical vest) and SPCS (soldier plate carrier system). [1]
Sandwich theory [1] [2] describes the behaviour of a beam, plate, or shell which consists of three layers—two facesheets and one core. The most commonly used sandwich theory is linear and is an extension of first-order beam theory.
Each assembly has two parallel steel plates joined by welded stringers or tie bars. The assemblies are then moved to the job site and placed with a crane. Finally, the space between the plate walls is filled with concrete. [1] The method provides excellent strength because the steel is on the outside, where tensile forces are often greatest.
Reinforced concrete and structural steel can be sustainable [12] if used properly. Over 80% of structural steel members are fabricated from recycled metals, called A992 steel. This member material is cheaper and has a higher strength to weight ratio than previously used steel members (A36 grade). [13]
Steel is used extremely widely in all types of structures, due to its relatively low cost, high strength-to-weight ratio and speed of construction. Steel is a ductile material, which will behave elastically until it reaches yield (point 2 on the stress–strain curve), when it becomes plastic and will fail in a ductile manner (large strains, or ...
An under-reinforced beam is one in which the tension capacity of the tensile reinforcement is smaller than the combined compression capacity of the concrete and the compression steel (under-reinforced at tensile face). When the reinforced concrete element is subject to increasing bending moment, the tension steel yields while the concrete does ...