6.11.1. INSTRUMENTATION A generic 'EMMA' for work with bulk quantities.

A multi-purpose EMMA can be used for any 'bulk' activity, involving a physically measurable unit of construction work scope that is quantified in tens, hundreds or thousands. For example, instrument tubing manpower requirements might be planned and tracked with this EMMA. (See tabular examples of average unit manhour rates for possible use - page down)


The EMMA comprises 3 'pages', namely 'INPUT' (Basic data that must be inputted in order for the EMMA to function), 'TABLES' (Spreadsheets for inputting target & actual progress percentages, manhours etc), and 'CHARTS' (Where inputted spreadsheets are presented as S-curves & histograms). The EMMA can be used:

  • to set up a target rate of progress (S-curve);
  • to set an estimate of man-hours, converted to manpower requirements (histogram);
  • to record units measured as complete each month;
  • to record man-hours consumed each month, thereby automatically comparing the actual rate of progress and actual usage of manpower, with planned rates.
  • furthermore, unsatisfactory trends can thereby be identified and work re-scheduled, along with automatic revisions to manpower requirements, that will lead achievement of target completion.

Initial requirements for inputting are:

  • the estimated total quantity;
  • definition of the unit (eg m3);
  • an estimate of man-hours required per unit;
  • the average number of hours to be worked each day;
  • the average number of days to be worked each week.

Thereafter, inputting should be in accordance with notes provided.

Use of an EMMA will be of particular interest to anyone with responsibility for getting a work scope package completed on or ahead of schedule. planning - Instruments + tubing

EMMA 2.1. above facilitates the estimating, manpower planning and tracking/managing of a single type of activity in bulk terms, say all instrumentation traywork without the cables and tubing that might go on the trays. The following calculator estimates, in greater detail and accuracy the installation of all types of instruments plus associated tubing, given quantities. Unit rates used for guidance can be changed to suit circumstances at the location of the construction site, wherever that might be in the world. A hypothetical example can be viewed by clicking Real-time Sync, then entering secret key 'instrumental' and connect. (Note: User must use either US Imperial OR metric measurement for inputting data.