Productivity rates for design activities
In the Open Standard
Gary WhiteheadMember for 17 years 6 months
- Created
- 4
- 5
0
Can anyone suggest any good resources for productivity rates on design activities? Specifically O&G sector?
I’m trying to build up what I can based on previous projects, but my firm doesn’t have an activity-based timesheet system so I have no way of tracking actuals. Estimates on previous projects often aren’t broken down beyond the discipline and when they are, they vary wildly (eg a bar bending schedule should take anywhere from 3 to 20 manhours, depending on who did the estimate...)
Normally I’d go to the designers themselves but as I say, their previous estimates have not been consistent. Also they are mainly contractors in a design office without much work on, and in the current climate I am wary of the self-preservation instinct leading to over-inflated estimates.
I’m trying to build up what I can based on previous projects, but my firm doesn’t have an activity-based timesheet system so I have no way of tracking actuals. Estimates on previous projects often aren’t broken down beyond the discipline and when they are, they vary wildly (eg a bar bending schedule should take anywhere from 3 to 20 manhours, depending on who did the estimate...)
Normally I’d go to the designers themselves but as I say, their previous estimates have not been consistent. Also they are mainly contractors in a design office without much work on, and in the current climate I am wary of the self-preservation instinct leading to over-inflated estimates.
4 replies
Oldest first- 0Gary Whitehead ·Yes, I use the DDR (Design Documents Register) as the basis for the schedule activities (IFC, IFA, etc). It is very sensible to have the schedule mirror the DDR to ensure common reporting.
The problem I am having is more around getting reliable estimates for the productivity rates / durations of the design activities. - 0Rafael Davila ·May I suggest the following reference from the Gulf Publishing Company:
Title: Conceptual Cost Estimating Manual
ISBN 10: 0884152677
Author: John S. Page
Pages: 326
Edition: Second Edition
Binding: Paperback
Price: $120.00 Single Price
"This printing gives the construction industry and the management staff of chemical, refinery, and industrial plants the information they need to generate fast, reasonably accurate costs for designing and constructing a specified facility"
You can follow the links:
http://www.amazon.com/Conceptual-Cost-Estimating-Manual-Reprint/dp/0884152677#reader
http://www.gulfpub.com/default.asp?page=14&productID=2706&VS=
I give the reference "as is", I am not into Oil and Gas but as a Civil Works Contractor quoted a couple of Civil Works jobs for the Oil & Gas Industry one of which was a Loading Dock/"Berth". My client was awarded the job.
Log in or join to reply
ProjectControls.com is free to join. Members can post questions, reply, vote and follow discussions.
Existing members: your original username and password still work. Forgot password?