![]() ![]() Sag rods are always assumed to be pinned frames in building analysis. They are used to reduce bending moment in purlins and girtsas well as acting as lateral support sagainst local buckling. Purlins and Girts with Sag rods Sag rods can now be inserted in ProtaStructure. This is a unique feature which reduces the number of analytical models which need to be considered for buildings with basements to just one model running all analytical variations in one analysis run. These results are run concurrently and combined in accordance with the relevant seismic code of practice. New Member Type: Basement Wall (Meshed) A new type of wall is introduced: Basement Wall.This enables special consideration for basement walls in seismic analysis design, where the participation of the basements mass in the dynamic analysis is varied. ![]() New Member Type: Coupling Beam A new type of beam is introduced:Wall Coupling Beam.Coupling beams are used to link shear walls for increased stiffness to resist large lateral loads, e.g.Ĭhecks are performed to validate this system to seismic codes of practice. Two separate stiffness matrices are formulated for the analysis, run concurrently and enveloped for design. Prota Structure Cracked Sections ForĪbility to Use Cracked Sections for Load Cases Each load case can now be configured to use either cracked or uncracked sections for a given combination.This feature is necessary for advanced seismic analysis requirements(for most leading earthquake codes) as well as wind load or temperature loading which requires the assumption of cracked section properties. This provides user with more refined control over the effective stiffness(cracked), including new settings for basement walls coupling beams and separate in-plane and out ofplane stiffness settings for shear walls and slabs. New diagrams interface offers superior visualization with zoom, pan and stretch tools. Diagrams shown are customizable and very accurate providing superior stationing for design, numerical integration and enveloping. ![]()
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