The factors that generate costs for concrete

To capture the cost of concrete, many parameters have to be considered. In addition to the type of concrete and its strength class, surcharges directly and indirectly affect the costs. Temporary retarders allow a longer processing time, which in turn accelerates the pumping and casting time and avoids time surcharges.

The factor material

The calculation of the costs around the concrete contain many single factors, which partly influence each other. In order to set up the costs and achieve the best possible cost-benefit ratio, the workflow should be planned precisely.

The first calculation basis is the material price of the concrete. Here a final price per cubic meter including all possible surcharges should be determined. In addition to the tightness class, surcharges with regard to acceleration or deceleration of the setting process, consistency modifiers, and color pigments must be taken into account.

When selecting the retarder or accelerator, the entire construction process must already be included. All suppliers and suppliers of ready-mixed concrete offer a discharge time per cubic meter. If this is exceeded, additional costs will be incurred. Depending on the local conditions, it must be considered whether a faster or slower setting of the concrete influences the unloading times.

The factor preparation

Another cost factor is a lump sum surcharge for so-called pumped concrete. Depending on local conditions on the construction site, the concrete used can be "poured" or "pumped". Especially with well-prepared concrete foundations or concrete floors, a pumped concrete is not absolutely necessary and the additional costs can be saved. However, adapted start-up and unloading situations have to be created for this purpose.

Careful site preparation can save many costs. The free access and the next possible positioning of the concrete vehicle or concrete pump determines the unloading effort. Pumprohre at the base price are usually up to twelve meters long, which is to be checked individually by each provider. Extensions generate additional costs.

The factor time

In a "fresh product" such as concrete, the time factor affects the costs in several ways. Sufficient helpers on the construction site ensure the fastest possible unloading time. On the one hand, this has the effect of avoiding exceeding the free time allowance and, on the other hand, it ensures that overtime bonuses do not apply if regular working hours are exceeded in the evening.

For the application of concrete outside normal working hours overtime, night, weekend and holiday supplements are due. Due to a precise time management and concreting times with sufficient time difference to edge times surcharges can be saved. The usual working hours are defined by most providers on workdays from seven to six o'clock.

The factor quantity

The most precise possible determination of the required amount of concrete has a major impact on the final costs. Minor quantities, usually orders under five cubic meters, are calculated with flat rates per cubic meter. A high cost factor is residual concrete, which has not been used up and must be disposed of. Together with the cleaning of, for example, the concrete pump, every cubic meter of remainders can cost more than the concrete used.

Tips & Tricks

The cost of concrete is often a matter of balance. Let your providers advise you. Reputable providers show you savings potential.

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