Fabrication Drawings

Our Steel Detailers will assist you with your Fabrication Drawing requirements

 

Email us today

Our Steel Detailing Service produce full sets of Fabrication Drawings to bridge the gap between Design & Fabrication

What are Fabrication Drawings?

Fabrication Drawings are usually used for 1 off’s or per job/project bases (compared to Manufacturing Drawings).

They are mainly used in:

  1. Structural Steel
  2. Sheet Metal
  3. Architectural Steelwork
  4. Ballustrading/Handrails
  5. Stairs

The drawings (similar to Manufacturing Drawings) are split into 2 main categories:

  1. Single Part Drawing

Single part drawings are workshop drawings that show details of one part such as an end plate or a single beam etc. The drawings are usually presented on a small sheet such as A4.

These drawings should basically show sufficient information for the material cutting.

The steel detailer should include the following information. (They should however not show more information than is required.) :

  • Material Specification
  • Linear Dimensions
  • Angular Dimensions
  • Hole Dimensions
  • Section/Plate Size
  • Weight
  • Developed Sheet (if applicable)
  1. Assembly Drawing

Assembly drawings are workshop drawings showing how the single parts assemble such as beam with end plates. The drawings are usually presented on a small sheet such as A3 or A1 for highly complex assemblies with many single parts.

These drawings should basically show sufficient information for the welder to assemble and weld the single parts. They should also contain any finishes for the galvaniser or powder coater.

The steel detailer should include the following information. (They should however not show more information than is required.) :

  • Single Part Numbers
  • Linear Dimensions
  • Angular Dimensions
  • Weld Specification
  • Finish Specification
  • Quantity
  • Weight
  • Bill of Materials (BOM)
  • The drawings should be illustrated in a way to clearly show how the Fabrication fits together. This should/could include several views (Plan, Top, Side, Isometric etc.) and Exploded Views

It is important that good quality drawings show all the information that is required, but no more than needed. An example is to many dimensions or to many views.

  1. General Arrangement Drawing

General arrangement drawings (GA drawings) show the complete model or an extract to convey the full design intend in a very clear manner. A GA Drawing will typically include a Isometric View (3D View), plan views (from top), elevation views and section views.

The drawing needs to include sufficient views to negate any assumptions that could be made.

The drawings are usually the basis for the first approval process by the Structural Engineer and Architect.

These drawings should basically show sufficient information for the fitters to assemble fix all the Assemblies together.

The steel detailer should include the following information. (They should however not show more information than is required.) :

 

  • Assembly Numbers
  • Dimensioned Grid
  • Angular Dimensions of Assembly positions
  • Weight
  • Levels
  • General Material Specification
  • General Finish Specification
  • Connection Design

The above 3 drawing types are the minimum a competent Steel Detailing Service should provide. We offer additional information such as a range of lists (Bolt Lists, Drawing List, Single Parts List, Plate List), NC Files and a 3D BIM Model.

 

What Fabrication Drawings do we offer?

JC offer full set of Fabrication Drawings for a range of industries. We believe that in order to produce good quality fabrication that will enable an excellent installation on  site a certain amount of coordination is required between all parties involved.

We are used to coordinating with steel manufacturers, architects and structural engineers to create General Assembly Drawings and the subsequent detailed drawings showing connections, holes etc.

Our service prides itself in working closely with all parties involved to ensure any queries get raised and answered prior to fabrication commences. We are therefore always willing to visit site should this be of advantage.

 

What information do we need to create Fabrication Drawings?

This depends on the industry involved.

For Structural Steel Fabrication Drawings (including, Stairs, Ballustrading, Architectural Steelwork etc.) we usually work from the Structural Engineers Line Drawings in conjunction with the Architectural Drawings. We would normally visit site to check any potential clashes.

 

How much do Fabrication Drawings cost?

All are Fabrication Drawings are usually quoted on a fixed price basis as we are normally able to quantify the work easily.All we need is the Structural Engineering Drawings or Architectural Drawings in order to provide a fixed price.