Concrete Slump and Pouring Sequence

What happens here

The consistency of the concrete (slump) is important. A typical 4-5 slump is used for sidewalks, while a slightly stiffer 3-4 slump is preferred for steps. If both steps and an apron are being poured on the same day, Ron advises pouring the steps first. This is because the stiffer concrete needed for steps might become too hard if left in the truck, whereas excess water can be added to the remaining concrete for the apron if necessary to achieve a higher slump. However, adding water to the concrete mix after it has left the plant is generally not recommended as it reduces the concrete's strength.

Goal: Select the correct concrete slump and pour in the optimal order.