RAM Structural System CONNECT Edition V15 Update 8

RAM Structural System CONNECT Edition V15 Update 8. This software can be used to design nearly every structural component of a building structure, from the foundations to the gravity beams and columns to the lateral framing system. 

RAM Structural System CONNECT Edition V15 Update 8 - Release Notes:

Release Date: April 17, 2018

New Features and Enhancements:

- AISC 360-16 Specification for Structural Steel Building
The requirements of AISC 360-16 Specification for Structural Steel Buildings have been implemented in RAM Steel Beam, RAM Steel Column, and RAM Frame. In RAM Steel Beam the requirements have been implemented for composite and noncomposite steel beams and cellular and castellated C-Beams. Options for methods to satisfy the new requirement for composite beam design to consider the effect of the ductility of the shear stud connection has been implemented, see the description of the enhancements to Composite Beam Stud Criteria for more information.
- AISC 341-16 / AISC 358-16 Seismic Design
The requirements of AISC 341-16 Seismic Provisions for Structural Steel Buildings and AISC 358-16 Prequalified Connections for Special and Intermediate Steel Moment Frames for Seismic Applications for seismic design have been implemented in RAM Frame. Changes include, among others, updates to requirements for width-thickness ratios per Table D1.1 and use of Ecl, the capacity-limited horizontal seismic load effect, rather than Emh, the effect of horizontal forces including overstrength, where appropriate. The implementation is comprehensive and robust.
- ASCE 7-16
The requirements of ASCE 7-16 for the automatic generation of Wind loads, Seismic loads, and Response Spectra Analysis have been implemented.
- Creep and Shrinkage Analysis
The Construction Stage Analysis feature introduced in V15.05 has been expanded to give the option to include time-dependent material effects such as creep, shrinkage and elastic modulus changes for concrete members. Time intervals for each stage (i.e. stage duration in days) are specified to carry out a construction stage analysis to consider time-dependent material effects. The user can choose from three different concrete material models: ACI 209R-98, CEB MC90-99, or Model B3.
- Composite Beam Stud Criteria
Several powerful enhancements have been made to the Stud Criteria in RAM Steel Beam.
Previously a Minimum % of Full Composite Allowed could be specified, applicable to all composite beams. Separate Minimum % values can now be specified for beams with Short Spans versus those with Long Spans, and the span length that divides the two. This feature was implemented mainly to provide one method for satisfying the new AISC 360-16 requirement for composite beam design to consider the effect of the ductility of the shear stud connection; the Commentary indicates that one method for doing that is to design beams with spans greater than 30 ft to be at least 50% of full composite. The option is available for all of the Codes, for anyone who desires to specify different minimum values for longer beams versus shorter beams. Note that it is not necessary to specify any minimum % values; the program will automatically satisfy the Code-specified minimums. These options are provided only for those that desire to design to a higher minimum % value.
Previously there was the ability to specify Maximum Stud Spacing, with options to limit the spacing per the Code requirements or to a more stringent value specified by the user, applicable to all composite beams. This has now been split into two sets of options, one for the case of the deck parallel to the beam and one for the case when the deck is not parallel to the beam (perpendicular or at some angle) for which an additional option, maximum spacing equal to Rib Spacing, has been implemented. This latter option will result in a stud in every rib, properly considering the number of ribs that actually cross the beam, whether perpendicular or at some skewed angle. When the deck is perpendicular this option provides another way of satisfying the new AISC 360-16 requirement for composite beam design to consider the effect of the ductility of the shear stud connection; this won’t necessarily satisfy the requirement if the deck is skewed with respect to the beams.
When designing to any of the AISC 360 Specifications there is an option to satisfying the new AISC 360-16 requirement for composite beam design to consider the effect of the ductility of the shear stud connection by enforcing the method given in the Commentary, which indicates that for beams with spans greater than 30 ft the beam must either be at least 50% composite or have shear studs that provide at least 16kip/ft of capacity (roughly one stud per foot). It is recommended that this option be selected, otherwise the user will have to verify some other way that the stud ductility requirement is satisfied. If this option is selected it is not necessary to also specify a Minimum % of 50% for Long Spans nor to specify Maximum Stud Spacing, the program will determine how best to satisfy the requirement automatically. Note that this option will not automatically be selected for existing models, so it is highly recommended that you do so.

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