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Timber Barn Frame


The purpose of this test case is to validate some of the analysis of a structure with custom sections with the inclusion of shear area in the analysis, specifically:

  • Deflection
  • Forces/Moments
  • Linear Analysis with Shear Area

The Structural 3D results were compared against a third-party analysis software.

Model Setup

The structure is a 46-node, 108-member frame structure supported by fixed supports. The building consists of timber sections from the NDS catalogue for Sawn Lumber. The sections are comprised of the default Oakwood properties as provided in Structural 3D.

Evaluation points: 10
Solve Type: Linear Analysis

Timber barn frame

Timber barn frame sections

Analysis Results

Result Location SkyCiv Third Party Difference
Moment Z Member 403, End Node 11.23510 kip-ft 11.23542 kip-ft -0.0028%
Moment Y Member 205, Start Node 0.04080 kip-ft 0.04081 kip-ft -0.0245%
Shear Y Member 201, Start Node 0.10824 kip 0.10825 kip -0.00924%
Shear Z Member 304, Start Node -0.00441 kip -0.00441 kip 0.00000%
Reaction Y Node 11 4.92805 kip 4.92806 kip 0.00000%
Reaction Y Node 2 2.54242 kip 2.54242 kip 0.00000%
Deflection X Node 6 0.01830 in 0.01830 in 0.00000%
Deflection Y Node 17 -0.02282 in -0.02282 in 0.00000%
Rotation Z Node 19 0.00118 rad 0.00118 rad 0.00000%
Rotation X Node 40 0.01398 rad 0.01398 0.00000%

Result Screenshots

Timber barn frame displacements
Showing global deflection results in the Y without Shear Area

Timber barn frame displacements shear
Showing global deflection results in the Y with Shear Area

SkyCiv Free Frame Calculator

SkyCiv FREE Frame Calculator will generate and find the bending moment and shear force diagrams of a 2D frame structure. The free version allows you to input frames with a maximum of 3 members with applied point loads and moments for 2D frame analysis. Give the calculator a try or sign up for free today to get started with the software!

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