CHAPTER Ill, SECTION 3 progress engineer, and one property records engineer. This group was supervised by a Principal Engineer working directly under the H&N Resident Engineer’s supervision. other Departments. Estimating functions performed for Operation CASTLE entailed such activities as: (1) the preparation of preliminary estimates which reflected the total cost of anticipated construction, engineering, camp operations, maintenance, field. support services and roll-up services; (2) origi- These important depart- mental functions included such activities as Contract Administration, Budget and Accounting, Industrial Relations, Procurement, and Engineering at both the Home Office and in the All cost estimates prepared during Operation CASTLE followed an established pattern, which detailed or segregated the relevant elements as follows: nal estimates, prepared after engineering design was authorized and formally submitted to the 1. The items of direct labor, direct material, equipment usage, and batch and aggregate plant production were considered as direct costs and were estimated for each job on the basis of similar work in the Zone of the Interior. Field Manager; and (3) current estimates, which included the cost of any and all changes that deviated from the preliminary design. The estimated construction cost, when approved, be- came the official cost used to determine the 2. In accordance with previous experience at the Pacific Proving Ground, other expenses were estimated as follows: Contractor’s fee for approved construction. When authorized changes in design oc- curred after release of the current estimate, a a. Indirect as 65% of combined direct labor and direct material. from the original design. This estimate super- b. Operations as $4.50 per man-hour of the estimated direct labor. revised current estimate was issued which included the cost of any additions or deletions seded the previously issued current cost estimate in its entirety. Special studies were also prepared to supply general information or com- c. Field Engineering as 4.75% of total estimated construction cost of each parative data for the proper determination of design, manpower requirements, or construction schedules. project. d. Engineering design as 4.00% of total estimated construction cost of each A copy of all estimates was supplied to the Jobsite for use and reference in reporting prog- ress, and for preparing monthly completion estimates where it was found that the latest current cost estimate deviated from the field estimate “to complete’ by ten per cent. This information was included in each monthly cost statement of work in progress. _ Data originated or assembled by Estimating was used in work performed by various Type of Estimate Cost studies Budget forecasts Preliminary Cost Estimates Original Cost Estimates Current Cost Estimates Total - All Types project. The following compilation, which totals 2173 estimates, represents approximately 300% more than the number of approved estimates incorporated into the Contract. This over-all total was due principally to the fact that many estimates required complete processing throug the preliminary and original estimate phases prior to the preparation of approved current estimates. Number of Gross Net Estimates Dollar Value Dollar Value 110 82 99 741 1,141 $ 17,089,295 43,000,000 35,669,940 23,290,854 47,707,600 $ 17,089,295 43,000,000 30,792,964 21,285,104 43,505,820 2,173 $166,757 ,689 $155,623,183 An “Estimated Operations Schedule,” reflecting the scheduling of engineering, procurement and construcion for each item of authorized construction, was issued and reviewed pe- riodically by the Manager, Construction-Operations Division, his staff, and the Project Engineer. This provided the means for coordinating the work of the various Departments involved. Immediately following the review and issuance of this schedule, a complete catalogue of Scien- tific Stations was issued which provided a brief description of the construction involved, site locations, and User requirements, and served to coordinate the User’s needs with Jobsite construction. Page 3-9