> Yes it was a 0.30 vertical bust. Pipes in this area are 12" PVC sanitary sewer.
>
> I found the bust when I was asked to check the inverts of the run of pipe between two manholes installed in the middle of the project. I check to three different control points as shown on the plans and also matched some existing manholes to verify the design survey accuracy. The new manholes were set to low based on the bad control so the slopes will be flatter going tom the pump station. There is about 700 feet to the pump station. They should be able to make it work.
>
> When the construction surveyor raised his arms and declared he was not responsible for the control shown on the plans and it was not his job to verify the control in order to do his work, that the control on the plans should be correct and he was not going to verify it to do his job being he wasn't being paid to do that.
>
> I kind of thought to myself WTF! Are you serious!
>
> Wanting to get others opinion on this.
I love these Hypothetical questions!
In my "real" world I expect/demand that basic checks are made as you go... even if I created the control from my last setup. You know, check the backsight (3d), check to a stake or two that I just set from the last setup, check to existing hard features on the plans, all Junior High stuff.
If the control was created by others, I would check between several points in the area, existing design features, etc., more Junior High stuff.
For flat grades a comprehensive check of outfall features (and wait till the outfall pipes are exposed before grading the new stakes).
Now your Hypothetical Surveyor could have an Out if the Standard Of Practice in the area is to Go and Blow with recovery of only one furnished point and make no check for typos on the plans or subsidence/heave of the control point. I would suppose there is a Hypothetical place where that is done, But I have never seen it. It would be up to the nutball to establish that such is the Local Standard Of Practice.
BTW: I Hypothetically quit two firms because those procedures were used and endorsed... but that is another story.
😉
I hope the nutball was working for another firm (and you are not woring for the design firm) and you are not behind the 8 ball on this one... been there, done that!
Peter
I would think checking the control would be good survey practice.
>
> Thoughts?
I agree, but I will interject that it is also good survey practice to have all of the control you set tie together 🙂
