Weight and centre of gravity (CoG) are both important aspects of a design. Structural analyses and marine operations are strongly influenced by the weight of a given structure.

Ramboll provides the tools to handle these aspects and our estimates are relevant for early concept studies, engineering, construction, operation and modification projects.

In a project, variations in weight during and after the design phase are an unwanted factor. To prevent this variation from occuring, weight estimates need to be as accurate as possible in the early stages of a project.

Software used for accurate estimates

Ramboll Oil & Gas’ software system WEPS (Weight and cost Estimating and Project Screening) is the tool to make these accurate estimates that can ultimately assist our customers in the crucial decision-making process of a project.

Monitoring with MON

We have also developed the software system MON, MONitoring, for topsides projects. MON can be used monitoring and controlling weights, loads and centre of gravity (CoG) as well as quantities and costs of topsides for all offshore structures and vessels.

With MON our customers get an inexpensive insurance against stability problems, structural overloads as well as budget overrun and failure to meet deadlines.

Ramboll Oil & Gas keeps historical cost and weight databases which provide valuable detailed information for future offshore projects

Reliable weight estimates serve as a basis for determining:

Weight budget
Concept feasibility study
Project cost
Project schedule
Weight monitoring

Once the project is being developed weights must be reported at regular intervals to ensure correspondence between weight estimates – and budget- and weight take offs (WTO). This reporting ensures that any variations are identified and properly evaluated. Differences between weight budget and the weights reported by each discipline constitute the weight contingency.