Hi,
I've recently taken a job as an Estimator/Project Planner for a Mechanical & Civil Engineering Contractor.
I'm developing estimates and project schedules from 1st Principles and I was wondering if anyone could recommend a good 'rule-of-thumb' guidebook for manhours that I can use to cross-check against my own production rates.
Specifically I'm looking for a book that will detail manhours for activities such as pipe welding, pipe fitting, flange fitting, valve fittings etc. I'm also looking for manhour information on general civil activities such as trench excavation, bulk excavation etc.
Appreciate any help you can provide.