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STRAP is a versatile solution for the design of a wide range of concrete and steel structures including residential/commercial buildings, bridges, industrial facilities, retaining tanks, communication towers, and many more. With a comprehensive workflow that covers the entire design process, STRAP’s reliable toolsets meet all the requirements needed for the analysis and design of a wide range of projects from a small scale plane frame structures to large scale hi-rise buildings. Various national design codes are available for the design of reinforced/prestressed concrete and hot-rolled/cold-formed steel. STRAP is multilingual and available in the following languages: English, Spanish, Chinese, Portuguese, Russian, Taiwan.
STRAP gives structural engineers probably the best interface and features to design cold-formed steel (LGS) sections and structures such as Cabins, Wall Panels, Trusses, etc. Design flexibility makes the Light Gauge/ Cold-Formed steel products ideal for affordable housing projects, residential, commercial, institutional, educational, and industrial structures.
Frames are modeled by beam elements (line elements) defined between two nodes, and can be oriented anywhere on the 3D space. Six degrees of freedom allowing both translation and rotation. Beam-column formulation which includes the effects of Axial deformation, biaxial bending, biaxial shear deformations, and torsion. STRAP has a built-in library of steel sections properties for different regions around the world. Ordinary shape, user-defined hot-rolled or cold-formed steel sections properties is feasible via STABLE module. Common shape sections properties can be defined by dimensions for concrete or welded steel. CROSEC add-on provides STRAP users the maximum flexibility by allowing them to define arbitrary shaped sections for concrete, hot-rolled steel, and cold-formed steel. Non-linear cable properties can be assigned to catenary the behavior of slender cables under their own self-weight.
Plate elements are three or four node 2D planar that can be oriented anywhere on the 3D space, usually used for modeling constructive surfaces such as slabs, footings, shear walls, retaining walls, etc. All translation degrees of freedom are available, as well as rotational degrees of freedom that are not out of plane. Powerful generation and control of rectangular, skewed, and circular meshing. Elements properties include flat, tapered, ribs, voids, or waffle. Orthotropic behavior is available as well.
Wall elements are used for modeling reinforced concrete shear/ductile walls. Advanced “design unit” feature enables separate design units in a single wall section for maximum design flexibility
Cable element is a nonlinear element used to model the catenary behavior of slender cables under their own self-weight. Tension-stiffening and large deflection nonlinearity are inherently included in the formulation
STRAP will automatically generate wind and seismic loads according to many design codes. Additionally, a sophisticated moving load generator allows the user to apply moving loads on frame and shell elements. Automatically generated Chess loading for beam elements.
Available Codes for wind loads: ASCE (USA), EC1 (EU), SP20.1330 (Russia), IS875 (India), AS/NZS1170, IS414 (Israel).
Available Codes for seismic loads: ASCE (USA), EC8 (EU), UBC, NBC (Canada), P100-1 (Romania), IS413 (Israel).
Graphic results are displayed on screen and include internal forces (moment,shear, axial, etc.), displacements, stresses, and reactions. For shell elements results can be displayed as a contour map, at element centers or “a long a line”. In addition to the ordinary analysis result types, STRAP also enables you to display results required for design, e.g. reinforcement area in concrete elements or design moments in slabs that account for the Mxy moments.
Design reinforced concrete frames, slabs, and walls according to code requirements (ULS/SLS) including: required area of main steel reinforcement, shear reinforcement, deflection, etc. Seismic design requirements are accounted for where applicable. Beam and column detailing are available, and can be assigned to layout for printing or exporting for a DXF file (CAD).
Available codes for reinforced concrete: ACI318 (USA), EC2 (EU), BS8110 (UK), NBR6118 (Brazil), CSA 23.3 (Canada), IS 456 (India), AS 3600 (Australia), SP 52-101 (Russia), IS466 (Israel).
Design prestressed concrete frames and slabs according to code requirements (ULS/SLS) including: cable losses, allowable stresses, ULS check for bending and shear, deflections, differential creep and shrinkage, and more. For prestressed frames, pre-tension and/or post-tension are available, and for slabs post-tension is available. Combining stage construction analysis and the prestressed module allows to analyze and design complicated structures.
Available codes for prestressed concrete: ACI318 (USA), AASHTO (USA), EC2 (EU), BS8110 (UK), BS5400 (UK), CSA23.3 (Canada), IS1343 (India), IRC18 (India), IS466(Israel).
Design hot-rolled, welded or cold-formed steel frames according to code requirements (ULS/SLS). Combined sections of any shape and form can be designed, as well as castellated/cellular members. STRAP can determine buckling/LTB effective length and deflection control length automatically or by user defined options. In addition, STRAP can perform optimization of steel sections based on analysis results or based on sway control. The optimization process helps to shorten the time of achieving economical and practical design. Composite steel/concrete Column or beams design are also available.
Available codes for hot-rolled/welded steel: AISC360-16-ASD/LRFD (USA), BS5950 (UK), CSA S16-14 (Canada), EC3 (EU), IS 800 (India), AS 4100 (Australia), SANS 10162 (South Africa), NBR 8800 (Brazil), GB 50017 (China), SP 16.13330 (Russia), IS1225 (Israel).
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STRAP is a finite element static and dynamic analysis software for the analysis and design of a wide range of concrete and steel structures.
STRAP (STRuctural Analysis Program) is a multifaceted software which gives versatile solution for the design of a wide range of concrete and steel structures that includes: residential/commercial buildings, bridges, industrial structures, retaining tanks, communication towers, and many more. STRAP always gives architectural solution for safe and economic project.
Watch STRAP tutorial at https://www.youtube.com/c/RAMCADDSYSCampus/search?query=STRAP
Find the following link for the free trial of STRAP software Free Trial Download – Atir Engineering Software Development (atirsoft.com)
Special e-course on Cold formed steel design using STRAP software @ campus.ramcadds.in
Column – ULS code checks for reinforced concrete columns.
While assigning load combination, “By code” option enables to select design codes in all combinations and factors of selected code will be assigned to load group automatically.
STRAP allows to define a sequence of stages wherein the user can revise the model’s geometry at each stage by deactivating/revising all modelling elements, supports, etc. Loads are applied selectively on each stage.
STRAP enables to analyse, design and detail RC wall by developing surface of shell element into a wall element. Advanced “design unit” feature enables separate design units in a single wall section for maximum design flexibility. Opening in the shear wall is possible.
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