Concrete and Steel – Hidden Snags to Watch out For –A Case Study in Duffy’s Forrest – An Example of Something that can Kill your client (memo 42)

Anyone who’s a detailer should be aware of this issue.

If you’re not aware: you can cost your client dearly. How?

  • On site rectification costs:
  • crane, ($500 / hour for example)
  • crew: supervisor, boiler makers, riggers (x2) – it become expensive.

You need operations to occur as fast as possible. This means you have to advise your client about potential issues.

Consider the following:

What is an issue that can kill your client regarding the below:

Assumed facts:

  • The concrete has already been poured.
  • But the steel has not yet been cut and fabricated.
Concrete is never where it should be.

Check out the live model link here to Duffy’s Forrest.

Be warned:

  • We keep repeating this again and again: very rarely is the concrete where it should be!
  • The pockets may not be properly aligned.
  • The pockets may be too deep – as it was in this case.

Lesson to Be Learned?

  • Detailers should ensure that their clients conduct site surveys to ensure everything is ok.
  • Detailers should make sure that the pockets are the correct depth.

In this case the pockets were too deep – this means that the columns need to be lengthened.

If the columns were not lengthened, then once it is taken to site – nothing would fit. And now site rectification costs would be immense.


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