1350.05.04.02 – Plastic…

1350.05.04.02 – Plastic Concrete Requirements

• The slump requirements in this section and Table 1DB are not aligned with CSA A23.1/.2 Clause 4.3.2.3.2.
• The specified acceptance range is more restrictive than CSA requirements without demonstrated benefit to concrete quality.
• Narrow slump ranges can increase project risk and lead to higher costs due to unnecessary rejections or adjustments.
• Slump selection should be the responsibility of the contractor based on the method of placement.
• Once the slump is selected, field acceptance should follow the ranges defined in CSA A23.1 Clause 4.3.2.3.2.
• As this is a design-build standard, it is expected that CSA A23.1 governs slump requirements, with performance requirements taking precedence over prescriptive limits.
• Typical MTO prescriptive requirements should therefore be superseded by CSA A23.1 to allow innovation and optimal placement performance
• As this is a design-build standard, it is expected that CSA A23.1 governs