Costs as % of Construction
Costs as % of Construction
(OP)
Does anyone know of any resource/reference for estimating engineering, construction oversight, etc. costs as a percentage of total construction costs?
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
Costs as % of Construction
|
Costs as % of ConstructionCosts as % of Construction(OP)
Does anyone know of any resource/reference for estimating engineering, construction oversight, etc. costs as a percentage of total construction costs?
Red Flag SubmittedThank you for helping keep Eng-Tips Forums free from inappropriate posts. Reply To This ThreadPosting in the Eng-Tips forums is a member-only feature.Click Here to join Eng-Tips and talk with other members! |
ResourcesWhat is rapid injection molding? For engineers working with tight product design timelines, rapid injection molding can be a critical tool for prototyping and testing functional models. Download Now
The world has changed considerably since the 1980s, when CAD first started displacing drafting tables. Download Now
Prototyping has always been a critical part of product development. Download Now
As the cloud is increasingly adopted for product development, questions remain as to just how cloud software tools compare to on-premise solutions. Download Now
|
RE: Costs as % of Construction
I really think that it is up to the estimator to decide what contingency percentage he wants to use. On a project that you have designed and thought out down to every last bolt...then you would want to use a low contingency percentage(5%). If you aren't real familiar with the project and the work involved, then you would want to use a high contingency percentage (20%).
From my past experience, I'd say go high...unless you are trying to win a bid, and then I'd suggest you design it out to every last bolt and use a low contingency.
I hope this helps. There are a number of estimating books out there, and I looked in one of mine for contingency numbers but didn't find anything. Good luck.
RE: Costs as % of Construction
could you give me reference of some good books for estimation.
RE: Costs as % of Construction
If you go to Amazon.com and do a search for Means Estimating, you will get a long list of books. There should be a book for what you're looking for.
Hope this Helps.
RE: Costs as % of Construction
If you'r involved in construction and engineering to any extent you should subscribe to ENR (Engineering News Record sorry this is not intended to be a commerical plug for them. They are published by Mcgraw hill and are on the web at enr.com). They publish quartly cost data and general articals on construction.
One very good rule to remember is "Nothing is as cheap as good engineering" and it corallary " Nothing cost as much as poor engineering" When your project is falling behind schedule and your contractors are overwhelming you with change orders that bargin low bid engineering package you got won't look so good. Money spent wisely up front pays o big dividens later.
The design-build approach with a good engineer contractor team can cost more but be cheaper in the long run. Concurrent engineering/construction can save months on a schedule. If your product is valuable enough a month of extra production will pay for the best engineering you can find.
RE: Costs as % of Construction
Don't forget that in addition to the cost items you noted - I would call them Home Office Engineering and Construction Management respectively - you'll also have Sales Tax, Freight, Contingency, (perhaps) Owners Costs, Fee, and Contractors General Liability Insurance (CGL). This is only a partial list.
RE: Costs as % of Construction
RE: Costs as % of Construction