Calculation and post-calculation

Many projects are obtained only after price negotiations; it is therefore necessary to have a clear understanding in advance of the costing that underlies the commercial cost price. BFW's calculation module allows you to create a thorough calculation set-up for cutting and bending, prefabricated as well as wickerwork, based on past experience. Even in the case of a (family) business transfer, these standards offer a tool to look beyond commercial prices and make a proper assessment of risks in advance.

PAST RESULTS...

Past experience plays an important role in estimating risks in new projects. That is why the estimation module is a tool that can also be used to record the circumstances of the project, both known beforehand and recognised afterwards. The basis is the standards applicable to the various construction phases. These standards are recorded in a reference table and used for each new calculation. The standards table will be different for each company, depending on the nature of the projects (Utility, Residential, GWW) and its experience in those specialised areas.
The example below shows a set-up of the processing standard for a number of different phases:

Processing standards may also cover the processing of nets or supports. BFW distinguishes between (welded) support racks and support beams. These standards are average processing standards and can be corrected by correction factors. These include:

• The degree of repetition in e.g. floor reinforcement; this gives a negative correction to the norm;
• The application of collapse provisions, which necessitates a higher processing norm;
• The construction conditions; is work being carried out under cover or in open air; is a construction crane available or not;
• What is the shape of the beams; are there many dimensionally accurate sides that need to be taken into account?
• Will the material be delivered prefabricated or loose.

In the calculation, an average norm is determined on the basis of a diameter distribution (based on a total quotation, per m3, m2 or m1). This can then be adjusted by applying correction factors, creating a project standard that determines the processing standard per component.
BFW generates the reinforcement totals per diameter, mats and supports and calculates the standards for the various components: