AISC 15^th provisions code check is now available using new options 5A, 5B, and 5L

Box, Tee, Rectangular Tube, Wide Flange, Plate Girder, Channel, Angle, Unsymmetrical Plate Girder, Double Web Plate Girder, Boxed-in Plate Girder sections have been updated with the latest AISC 15th provisions. Revised section E7 has been implemented, and new checks for lateral torsional buckling and local buckling of Box/RTB and Tee sections have been added.

List of changes for various section types is as follows:

Wide Flange (WF), Plate Girder (PLG):

1. Web plate shear buckling coefficient, k_v, has been updated as per G2.1(b)(2).
2. C_V1 factor calculation has been revised for PLG section.
3. Q_a, Q_s factor method has been replaced with section E7 effective area calculation.
4. Equation F4-11 for calculation of effective radius of gyration for lateral-torsional buckling, r_t, has been updated.

Channel (CHL):

1. Updated web plate shear buckling coefficient, k_v, as per G2.1(b)(2).

Box (BOX):

1. Updated flange λ_r ratio (flexure non-compact/slender ratio) to 1.49√(E/F_y) from 1.40√(E/F_y).
2. Added section F7.3(c) web local buckling check for slender webs.
3. Added lateral-torsional buckling check (section F7.4).
4. Updated flange local buckling equation (section F7.2, eq. F7-5).
5. Q_a, Q_s factor method has been replaced with section E7 effective area calculation.

Rectangular Tube (RTB):

1. Added section F7.3(c) web local buckling check for slender webs.
2. Added lateral-torsional buckling check (section F7.4).
3. Q_a, Q_s factor method has been replaced with section E7 effective area calculation.

Tee (TEE):

1. Updated k_v value to 1.2 and h value to total depth d for C_v calculation as per Section G3.
2. Revised λ_r value to 1.52√(E/F_y) for stem.
3. Q_a, Q_s factor method has been replaced with section E7 effective area calculation.
4. Updated Fey in equation E4-3 for unstiffened tee.
5. Updated section F9.2 for lateral-torsional buckling.
6. Updated section F8.4 for local buckling of stem in flexural compression.

Angle (ANG):

1. Q_a, Q_s factor method has been replaced with section E7 effective area calculation.
2. Replaced M_e with M_cr as per eq F10-4.

Unsymmetric Plate Girder (PGU):

1. Q_a, Q_s factor method has been replaced with section E7 effective area calculation.
2. Added R_pt factor as per eq F4-17.
3. Updated r_t as per eq F4-11.

Double Web Plate Girder (PGD):

1. Q_a, Q_s factor method has been replaced with section E7 effective area calculation.

Boxed-in Plate Girder (PGB):

1. Q_a, Q_s factor method has been replaced with section E7 effective area calculation.

Note: All section numbers, equation numbers above are with reference to AISC 15^th .

SACS Collapse Advanced Updates

• Joints: The joint calculations have been improved and verified. The Collapse Advanced now supports following joint calculations:

  • Fessler and Buitrago Joint Flexibility

  • API LRFD, NORSOK rev. 1,2 and 3, ISO 19902 Joint Strength

  • MSL Joint Flexibility and Strengths

• Members: Collapse Advanced now supports all sections supported by current Collapse

  • Supported Sections: Tee, Channel, Angle, Box, Conical, Double-Tubular, and Jack-up Leg

• Local Buckling: The local buckling checks have been improved and verified for tubular and conical sections.

  • Supported methods: Marshal & Gates, API Bulletin 2U, API LRFD, and ISO 19902

• Impact:

  • Ship indention, member indentation, and impact energy calculation are verified for both loading and unloading.

  • A new feature is added to assume ship/member dent as plastic deformation.

Wave Response can now read in force time history from FLEX5 and BHAWC input

Wave Response can now read time history joint loads using FLEX5 and BHAWC file formats.

Pile 3D can now apply Base Shear and Base moment at the pile tip

This enhancement allows Pile 3D program to account for Base Shear and Base Moment applied to the pile tip. This effect is significant for gravity type and rigid piles with large diameter and ratio of length to diameter between 2 and 6 and may increase lateral stiffness and lead to a better design. This enhancement enables the Pile 3D program to calculate Base Shear by interpolating the pile tip T-Z curve using pile tip displacement and calculates Base Moment by interpolating P-Y curve using the corresponding rotation. Both effects are then added to the soil stiffness at pile tip.

Import FEMAP model into SACS

SACS can now import plates and solid elements created in FEMAP. The import is part of Precede graphic modeler. Currently, only plates, cubes, and tetrahedrons are imported.

Chartiview supports user defined Annotations

Users can add now Annotations to charts data points.

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