The general comments contained in ACI 211.1 are pertinent
to the procedures discussed in this guide. The description
of the constituent materials of concrete, the differences
in proportioning the ingredients, and the need for knowledge
of the physical properties of the aggregate and cementitious
materials apply equally to this guide. The level of overdesign
indicated in ACI 301 and ACI 318/318R should be applied
to the compressive strength used for proportioning.