SteelPE
Structural
- Mar 9, 2006
- 2,743
I have the opportunity to put a proposal in on a project that is quite large.... but the information is a little vague at this point as the project is still in the site permitting and design phase The project is a 600,000 square foot single story warehouse structure with an eave height of approximately 35'-0" +/-. Perimeter skin will be CMU lower section with metal panel upper section. At this point, there is only a 5,000 square foot mezzanine in the structure. We do not know the dimensions at this time but are figuring it will need to be split into 3-4 separate structures for thermal reasons.
So the problem I have is figuring costs on something of this size. The project at this point is extremely repetitive, so on the surface there doesn't really appear to be much work to do. If I approach the design from an hourly standpoint (break down the project into tasks and then figure out the hours to complete the tasks) then my number ends up ridiculous low when compared to % of construction costs.
What do others do in this instance?
As a base, I put in a proposal on a similar project with this same client about 2 weeks ago. This project was 129,600 square feet with a similar set of requirements. This proposal was accepted by the client. I was thinking of just doing a straight comparison of square foot costs..... I think that is reasonable, each project has a similar scope with some differences..... if we use this method we would be about 0.25% of construction costs (which seems low.... but is still much higher than my hourly method).
So the problem I have is figuring costs on something of this size. The project at this point is extremely repetitive, so on the surface there doesn't really appear to be much work to do. If I approach the design from an hourly standpoint (break down the project into tasks and then figure out the hours to complete the tasks) then my number ends up ridiculous low when compared to % of construction costs.
What do others do in this instance?
As a base, I put in a proposal on a similar project with this same client about 2 weeks ago. This project was 129,600 square feet with a similar set of requirements. This proposal was accepted by the client. I was thinking of just doing a straight comparison of square foot costs..... I think that is reasonable, each project has a similar scope with some differences..... if we use this method we would be about 0.25% of construction costs (which seems low.... but is still much higher than my hourly method).