Civil Engineering Project Management (4th Edition)

154 Civil Engineering Project Management
Fig. 13.5. Layout of a variation or change order
plus 148 per cent; plus subsistence or lodging allowance and travelling
allowances plus 12.5 per cent.
• The cost of labour sub-contractors and hired drivers is at invoiced costs
plus 88 per cent.
• The cost of materials is the invoiced cost to the contractor of those materials
plus 12.5 per cent.
• The cost of plant used is to be taken at the rates listed in the Schedule, and
hired plant at invoiced cost (excluding driver) plus 12.5 per cent.
• Cash discounts up to 2.5 per cent are not deducted.
The percentage additions may vary from time to time as new editions of the
Schedule are published following agreement reached in the industry. The
plant rates in the Schedule are also reviewed regularly and cover most types
of plant inclusive of fuel but exclusive of driver. For most items hourly rates
are quoted, for others daily or weekly rates.
As an alternative to the CECA dayworks rates, tenderers may be required to
quote – at the time of tendering – their rates against a list of labour categories
put in a schedule attached to the bill of quantities. This is necessary for work
done outside UK where no locally recognized schedule of dayworks rates
may apply. The method is also useful for construction contracts in UK since
the labour categories listed can be grouped into four or five classes according to