Appendix B to Stage 1 of Read Jones Christoffersen s High Rise Early Design report includes design schematics and further information on the Hambro joist system and the lift slab system.

Technical Report Author: Read Jones Christoffersen Ltd

This report by Read Jones Christoffersen -RJC- was commissioned by EcoSmart to investigate alternative structural slab systems for a typical high rise building in Vancouver that could use increased levels of supplementary cementing materials -SCMs- to replace normal Portland cement in slab construction. Stage 1 of the project outlined in the report describes three structural systems with schematic drawings of the floor slab. The systems examined in this report include lift slab construction hybrid precast/cast-in-place concrete deck and the Hambro joist system. RJC also briefly looks at the PRESSS system and proposes an additional concept for increasing the use of SCMs in high rise construction which is to combine radiant floor heating with slab temperature control during the curing period. The report includes an examination of the advantages and disadvantages for each system and a comparison of concrete volumes.

Technical Report Author: Read Jones Christoffersen Ltd

This report is part of the High Rise Early Design study commissioned by EcoSmart to produce the required knowledge for understanding the relationship between the selection of high-rise condominium building structural systems and their environmental performance cost and constructability issues. Stage 1 of the study includes the provision of schematic design drawings and a description of three structural systems for a typical highrise condominium.

The schemes outlined in the Yolles study include flat plate precast floor units and steel framing precast floor units and precast frame and slab on metal deck with steel framing. The Yolles report considers the lateral system for the three schemes and gives a concrete volume comparison for each option proposed.

Technical Report Author: Yolles Partnership

Michel de Spot s US Green Buildings presentation accompanies his conference paper entitled “The EcoSmart Concrete Project: Minimizing the Greenhouse Gas Signature of Concrete.” The presentation includes photos of several EcoSmart case studies and includes sample LEED credit calculations and environmental impact reductions for a concrete and a steel building. The presentation concludes that future LEED versions need to recognize the significant environmental benefits of concrete with high volumes of supplementary cementing material particularly in the context of climate change.

Presentation Author: Michel de Spot, P.Eng.