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Regarding the Slump – normal concrete slump is about 2 inches (50 mm). For Concrete that need to be pumped, these values are about 4 to 5 inches that is 100 to 125 mm. These values depend on the amount of sand and size of aggregates in the mix. Some guidance is given in the table below.

Recommended Slumps for Various Types of Construction

    Concrete Construction                                                     Slump (in inches)

                                                                                        Maximum               Minimum

1. Reinforced foundation walls and footings                          3                           1
2. Plain footings, caissons, substructure walls                        3                           1
3. Beams and reinforced walls                                            4                           1
4. Building columns                                                           4                           1
5. Pavement and slabs                                                      3                           1
6. Mass concrete                                                              2                           1

For Concrete Mixes that are to be Pumped

Maximum Size of Aggregate                     9 mm     18 mm   25 mm   37 mm     37 mm

Percent of Sand                                         60          43             45           39             40

Cement (Pounds per Cubic Yard)               565          525            525        510           565

Slump, inches                                             4          3 to 4           5          3 to 4      3 to 4

I trust this answers your question.

Sincerely,

Dr. Sharma