7 CLT Design check

Task

The task is to check various utilization values of a CLT beam.

Geometry

• 6m span, 1m width

• CLT 200mm, 5 layers

• Service class 2

Loads

• selfweight

• permanent load: 1 kN/m2

• live load: 2 kN/m2

• fire rating: 60 minutes (1 sided)

Software

CLTDesigner

• https://www.cltdesigner.at/

• Version: 8.1.2

Calculatis

• https://calculatis.storaenso.com/

• Version: 4.04.0

FEM-Design

• https://strusoft.com/software/3d-structural-analysis-software-fem-design/

• Version: 19.00.005

Focus Konstruksjon

• https://www.focus.no/produkter/focus-konstruksjon-3d/

• Version: 2022

We gladly accept calculation of other software programs. In case you would like to add a new calculation or have suggestions for posted solution, please contact postmaster@node.no.

Changes

• 2022-03-09

  • FEM-Design: changed CLT to Binderholz due to issues in fire design with r33 and r66 values for Söder CLT / fixed wrong definition for one sided fire

• 2022-03-02

  • Focus Konstruksjon 2022 added

  • Calculatis updated to 4.04.0

  • CLT Designer updated to 8.1.2

  • FEM-Design updated to 21.00.001

• 2021-01-08

  • FEM-Design: deflection check limits for u,net,fin and u,fin switched

  • updated CLT slab design check graph

• 2021-01-07

  • FEM-Design: deflection calculations changed

  • Chart for deflections modified

• 2021-01-06

  • FEM-Design: added calculation with orthotropic shell

• 2021-01-05

  • FEM-Design: material safety factor changed from 1,3 to 1,25

  • Bending utilization changed to 40%

Results