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Compos Changelog

What's new in Compos 8.3 Build 4

Jun 18, 2012
  • New Features:
  • Web post checks may now be reported in Output Views.
  • Fixes:
  • Compos is ignoring the neutral axis position when identifying the Tee section class at the notches. This results in conservative section classification and underestimating the Vierendeel moment capacity.
  • Floor frequency is underestimated if two or more composite beams are used.
  • Compos is not giving error when the design fails to find suitable stud arrangement
  • Compos crashes sometimes when saving in ASCII format on 64-bit machines.
  • In EN1994-1-1:2004 design Compos is incorrectly setting the load height to 1.0m when checking for lateral torsional buckling in construction stage.
  • Text report is showing the point restraints even when the span is laterally restrained.
  • Compos is resetting the user defined load factors to default values whenever the safety factors page is activated.
  • If the web post width is less than 0.4*h0, Compos gives a warning message that the web post width is less than 0.3*h0 instead of 0.4*h0.
  • Compos is incorrectly calculating the forces in the web post.
  • Compos is incorrectly using longitudinal mesh reinforcement for transverse shear capacity.
  • In Graphic Views mesh bars are always drawn longitudinally even when the direction of the mesh has been swapped.
  • The default stress unit is incorrectly defined in the registry preferences. A workaround for older versions is to open the preferences and change the unit.
  • The graphics displayed in the 'Summary (with graphic)' output is sometimes not clear.

New in Compos 8.3 Build 3 (Jun 18, 2012)

  • New Features:
  • 64-bit hardware support
  • Compos now supports the 64-bit capabilities of modern computer hardware. A 32-bit version of Compos will continue to be available for older machines and 32-bit versions of Windows. The two builds of Compos can read each other’s files.
  • New Design Codes: Compos now supports design to EN 1994-1-1:2004 (Eurocode 4) and UK National Annex.
  • Fixes:
  • Copying and pasting on data tables, e.g. on load table and beam section table of the member wizard, does not work properly. Avoiding using copy and paste is recommended on using Compos 8.2 build 3.
  • The minumum shear interaction is sometimes over estimated, i.e. 40% minimum shear interaction is wrongly calculated as 50%. Because of this, warning message is wrongly given.
  • For Class 3 and Class 4 sections stud distribution is incorrectly done using the plastic stress distribution.
  • Section properties at the centre of web opening are incorrect. This leads to non-conservative results.
  • Compos is calculating the transverse bar cover incorrectly. The cover of transverse reinforcement given by the program is 5 mm smaller than the actual value
  • Plastic section modulus and elastic section modulus calculations are incorrect for unsymmetrical I sections.

New in Compos 8.2 Build 2 (Jun 18, 2012)

  • New Features:
  • 2010 amendment to BS 5950 Part 3.1 has been implemented as a new design code option.
  • Fixes:
  • Compos crashes when doing design.

New in Compos 8.1 Build 1 (Jun 18, 2012)

  • New features:
  • "History" option has been added. The "History" is a list of history records, each made up of a date, time, user name and an optional note, to serve as a history of changes to the model.
  • The new Oasys Technical FAQ can be accessed via 'Help | Technical FAQ'.
  • A new version checking system has been implemented, giving more explicit identification of the version being run and options for periodic checking. See 'Help | About Compos'.
  • 2009 amendment (draft) to BS 5950 Part 3.1 has been implemented as a new design code option.
  • Requirement for composite beam natural frequency is taken into account in member design, if a member does not meet the frequency requirement, the steel beam section will be increased until the member meets this requirement.
  • Fixes:
  • The dimensions of metal deckings SMD TR60 and TR80 are slightly wrong, e.g. the correct dimensions for TR60 are 144 mm and 133 mm, but 140 mm and 140 mm were used, the correct dimensions for TR80 are 114 and 104 mm, but 140 mm and 120 mm were used.
  • The thickness of metal decking ComFlor 80 (0.9) is wrongly used for metal decking ComFlor 80 (1.0) and vice versa.
  • Some of the Corus metal deckings [ComFlor 70 and ComFlor 80 (1.0] used in Compos are out of date.

New in Compos 8.0 Build 3 (Jun 18, 2012)

  • New features:
  • Output view has been improved and it is now more compact and if printed it will take less pages.
  • Stress check based on Clause 2.4.3 of BS5950 Part 3.1 has been added as analysis and design criteria.
  • Floor footfall analysis results are available from text output, they were available only on graphic before.
  • Steel beam top flange width check based on Clause 5.3.1 of SCI 300 has been added, so if top flange width is less than 133 mm, a warning will be given.
  • Fixes:
  • Construction stage constraints from secondary members are ignored even though the check box has been checked to indicate they should be considered.
  • The shear force of right end notch is always zero.
  • The cover of transverse reinforcement given by Compos is 10mm less than the correct value if the trasverse reinforcement is chosen to be designed by the program.
  • The design strength rather than the characteristic strength of reinforcement is used when calculating the transverse shear capacity of reinforcement using the equation in Clause 5.6.3 of BS5950 Part 3.1. The characteristic strength should be used for this equation, therefore, the transverse shear capacity of reinforcement is 15% underestimated.
  • The default decking material grade cannot be changed, so the first grade of the two available decking grades is always used.
  • When web opeonings are subjected to very high shear, the Vierendeel moments are underestimated
  • The lambda for lateral torsional buckling analysis of steel beam is wrong for construction stage check
  • The position of the first steel section is sometimes wrongly altered after going through the section wizard.
  • The axial load is presented on the load table, but it is not used in Compos analysis.
  • When decking is perpendicular to steel beam, the longitudinal stud edge distance is not checked properly, a physical fitness need to be checked, so Compos will not put too many studs in logitudinal direction that can be fit.
  • Even though the steel beam top flange width is larger than 133 mm, the warning message of top flange width less than 133 mm is always given.

New in Compos 8.0 Build 2 (Jun 18, 2012)

  • Fixes:
  • If a member has been used as a member load and its name has been changed, the member load table is not updated accordingly, so the member load has been ignored in the analysis.
  • If a composite beam has a solid slab and the transverse shear capacity is controlled by shear surface b-b, the transverse shear capacity has been underestimated if the member is re-analysed.
  • If the slab width is variable, the checking of slab transverse shear capacity may be missed out for the second as well as the following slab sections defined in the concrete slab table.
  • The restraints from secondary beam is always ignored even "Take secondary beam as intermediate restraint" box is checked on "Restraints in Construction Stage" page of the member property wizard.
  • The shear force for the notch at right hand side of the beam is sometimes wrongly taken as zero if the meber has uniform steel beam section, but it has been defined at both left and right hand sides of the member.

New in Compos 8.0 Build 1 (Jun 18, 2012)

  • New features:
  • 3D graphic view
  • Better 2D graphic view
  • Graphic view of applied loads
  • Area loads
  • Member loads
  • Design option to use minimum number of shear studs
  • Design to selected section types
  • No stud zones
  • Variable concrete slab section
  • Metal decking angle
  • Member property to other members
  • Program produced shear stud layout
  • Text data file
  • User defined units
  • More metal decking types
  • COM user interface
  • Foot-fall induced floor vibration
  • Version Checking
  • Fixes:
  • The background colour of the saved JPEG file is always black.
  • When opening a file with user defined construction stage restraints, the intermediate restraints have been deleted.<
  • When copying member, the steel beam section is not copied, so the two members will use the same steel beam section.
  • When slab transverse shear capacity is controlled by b-b type failure, the reinforcement transverse shear capacity is wrong even though the reinforcement area is correct.
  • If the member property wizard is open while creating a new member, Compos crashes after the new member has been added to the data manager.
  • If the last defined slab section is not at the end of the composite beam, the calculated effective slab widths are wrong adjacent to the location of the last defined slab section.
  • If the final dead loads are smaller than the construction stage dead loads, the calculated deflections are wrong.