^{The Structural Engineering/LCCA Break-out Group was led by Antony Wood, President, CTBUH.}

^{Click on the image above or see link for video.}

Questions considered included:

• What are we comparing in a steel-timber LCCA study? 

Steel-Timber Hybrid vs. other structural systems, or different structural Steel-Timber Hybrid systems and configurations against each other?

• Starting Model

Model a real building with actual bill of quants; materials used; transportation distances etc - then vary scenarios based on that?

Should it be generic from the start?

Model only the structure or the whole building (system choice potentially impacts everything, e.g., dividing walls)

• Location

Which code to design to?

Differing approaches regionally towards fire protection

Differing energy sources for material production

• What heights / floor counts?

9 stories (IV-C; no gypsum)

18 stories (IV-A; gypsum required)

Or look to the future, and model 20 / 40 / 60 stories?

• Building Function role?

Office = column & beam / Residential = shear wall

Differing floor-to-floor heights (e.g., office vs. residential)

Impacts live loads (e.g., office vs. residential)

• What steel-timber configurations should be considered?

Columns and beams

Floor systems