Change Order Request 8

[beckala36]

Can anyone tell me what is standard practice for the following situation:

The scale on our set of HVAC drawings is mis-labeled. The actual scale is 1/8" = 1' and is labeled at 1/4" = 1'.
When the HVAC contractor did his take off he determined his quantities based on the scale shown on the drawings. Now, he realizes he only have half the materials and labor he needs. He wants the moeny for the other half. The architect continues to reject this claim. The owner goes with whatever the architect says.

I feel my HVAC sub deserves his money. Any advise on how to change the mind of the owner and architect?

 

[JPatten]

The owner really had no loss. He was surprised to find the HVAC cost more than he thought, but he got what he paid for, so I do not see how he was damaged.

The owner does end up with some loss. Only half of the HVAC was bid competitively. If the other half is paid for by change order then the owner ends up paying more.