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Mechanical Engineering 

Concept design and feasibility study

Stemar Engineering will shape your ideas into a 2D or 3D design. Before the first Concept Design or FEED-study is made all the functional requirements and constraints are defined in a specification. The following issues are important for the Concept Design phase:

  1. Function of the construction in process
  2. Location of the structure
  3. Use of material related to temperature, corrosion and environmental
  4. Determining the load spectra
  5. Desired lifetime

Based on the specification we will make one or more proposals and consult with you in a time. Through 3D visualization we will clarify the possible designs and identify possible obstacles. This allows you to provide your client with insight of the final product in the early stages of the project. In this stage simplified structural calculations are executed in order to verify the technical viability. For this concept stage we usually charge our hourly rates through regular time sheets as fixed prices or estimates prove to be difficult in practice. 

We can also perform feasibility studies for renovation projects. Our focus is on the technical feasibility.

Basic Engineering

After the design concept is finalized and approved, the Basic Engineering is made. In this phase, all structural parts are dimensioned. This means that the sizes of the steel sections and wall thicknesses are determined. We analyse  (dis-)assembly, transport and lifting to produce efficient assembly and short. At this stage, if required, the strength calculations are ecxecuted and reported.

Based on this engineering package construction companies can provide their quotation for the supply of the construction. In this phase the work is prepared by the supplier, who might give feedback about the compatibility between our design and their capabilities. The drawing package neither contains connection details nor material take-off lists yet.

Detail Engineering

Upon request of construction firms Stemar Engineering provide Detail Engineering , which includes work shop drawings, MTO's, sheet development drawings and cutting drawings. Often this phase includes the development of hoistingequipement and/or plans for mounting the structure. 

After the structure is mounted and commissioned then the drawing package may be executed "As Built". 

CE Marking

All machinery and pressure vessels must be supplied with a technical construction file and in most cases CE-marking is required. During the entire design process all risk must be minimized as a safe design is the first step to a safe installation.

All installations require a Risk Assessment. This forms the basis of the technical construction file. All risks are hereby identified and weighed. For unavoidable risks proposals will be assembled in an action plan. Risk Assessments apply to both existing and new installations or plants.



Stemar has several CAD-packages for the execution of your projects. The package choice depends on your wishes, drawing standard or project complexity. At the front end stage (FEED) of a project we normally start with a 3D model, which will be translated into 2D drawings in a later stage. Many of our clients archive their drawings in native 2D AutoCAD format, but we can deliver the models in various 3D CAD formats. 

AutoCAD

We have over 20 years of experience with AutoCAD. This package is renowned for its 2D capabilities, but we also use it extensively for 3D modelling.

 
Product Design Suite
   

Plant Design Suite Premium

(Plant 3D)

For the design of P&ID based piping layouts we use this Autodesk Suite, which is an addition to standard AutoCAD. We are able to generate isometrics and MTO's at the "press of a button". The package also contains a licence of Navisworks Simulate.

Plant Design Suite Premium
   
Inventor

Upon client's request we also use Autodesk Inventor for modelling, but we find this package less suitable for 1-off Industrial Engineering.

Product Design Suite
   
Raster Design

 This is an AutoCAD-add-on for the modification of old scanned drawings. We use it to execute minor modifications to old and archived drawings. 

Raster Design
   
Sheet Lightning

With the stand-alone package Sheet Lightning it is possible to make sheet developments of non-standard shapes. 

 Sheet Lightning