ABSTRACT
Unit Costs (Highway Works) INTRODUCTORY NOTES The Unit Costs in this part represent the net cost to the Contractor of executing the work on site; they are not the prices which would be entered in a tender Bill of Quantities. It must be emphasised that the unit rates are averages calculated on unit outputs for typical site conditions. Costs can vary considerably from contract to contract depending on individual Contractors, site conditions, working methods and other factors. Reference should be made to Part 1 for a general discussion on Civil Engineering Estimating. Guidance prices are included for work normally executed by specialists, with a brief description where necessary of the assumptions upon which the costs have been based. Should the actual circumstances differ, it would be prudent to obtain check prices from the specialists concerned, on the basis of actual / likely quantity of the work, nature of site conditions, geographical location, time constraints, etc. The method of measurement adopted in this section is the Method of Measurement for Highway Works, subject to variances where this has been felt to be of advantage to produce more helpful price guidance. We have structured this Unit Cost section to cover as many aspects of Civil and Highway works as possible. The Gang hours column shows the output per measured unit in actual time, not the total labour hours; thus for an item involving a gang of 5 men each for 0.3 hours, the total labour hours would naturally be 1.5, whereas the Gang hours shown would be 0.3. This section is structured in such a manner as to provide the User with adequate background information on how the rates have been calculated, so as to allow them to be readily adjusted to suit other conditions to the example presented:
□ Alternative gang structures as well as the effect of varying bonus levels, travelling costs etc.
