Field costs

At the end of each month, the field cost engineer collects all current information on a detailed cost report form. As these are actual costs, they can be used to estimate future job costs to completion. Daily reports of unit-cost progress for concrete, excavation, masonry, steel, piping, and electrical work, etc., are then used to predict possible overruns or underruns for the various items. Analysis and comparison with the original estimate point out trouble spots for early attention. If an item is running into difficulty, it is red-flagged to the resident and projec t engineers for remedial action. 

Inside boundary bmits field costs 2192 2024 Inside battery limits field cost 2829 2416 2390... 

Outside boundary bmits field costs 978 968 Power generation 119 254 419... 

Total field cost 3170 2992 Outside battery limits field cost 488 481 452... 

Guthrie and Garrett. It uses equipment factors to generate separate costs for each of the "disciplines associated with the installation of equipment, such as installation labor, concrete, structural steel, and piping, to obtain direct field costs for each type of equipment, e.g., heat exchangers, towers, and reactors. 

For ROPE applications to tar sand mining, economic projections were published for capital costs and operating costs. Total capital costs were estimated at 53,336,000 and annual operating costs were estimated at 9,683,000. For the estimation of capital costs, direct field cost was estimated at 35,558,000. Other capital costs were based on percentages of that estimate. These cost estimates were based on mid-1989 dollars (D13089C, pp. 242-243). 

Definitive estimates. Definitive cost estimates are the most time-consuming and difficult to prepare, but they are also the most accurate. These estimates require preparation of plot plans, detailed flow sheets, and preliminary construction drawings. Scale models are sometimes used. All material and equipment is listed and priced. The number of labor hours for each construction activity is estimated. Indirect field costs, such as crane rentals, costs of tools, and supervision, are also estimated. This type of estimate usually results in an accuracy of 5%. 

Nelson, R. G., Enersol Resources. (2001), Resource Assessment, Removal Analysis, Edge-of-Field Cost Analysis, and Supply Curves for Corn Stover and Wheat Straw in the Eastern and Midwestern United States, National Renewable Energy Laboratory, Golden, CO. 

Investment, total direct field cost, US 20.5 million Utilities required per pound of product ... 

Total field hours 60 x 1,700 = 102,000 Total Field Costs Breakdown (from Table 19.36)... 

Potential Drawback - lose competitive lump sum advantage. Field costs could increase by 15-20%. 

Potential Drawback - the eombination of overtime premium pay and a substantial drop in productivity could increase field costs by 50 to 60%. 

The Field Costs cover all costs associated with construction management and are discussed in detail in Sections 19.9. They do not cover the indirects associated with subcontracted labor included in the labor column. 

Introduction Hours at Engineering Contractor s Office Hours to Prepare Phase I Package Hours to Monitor Contractor s Work Hours for In-House Engineering Field Costs... 

Estimate total field costs with factor in Table 19.35 and break down into construction disciplines with aid of Table 19.36. See example in Table 8.1... 

This factor is to be applied only to the equipment listed in the estimate under the "Materials" column that requires minimum or no assembly by the regular construction forces. Equipment that requires field assembly by the vendor, such as large storage tanks, large boilers, materials handling systems, and other complicated packages, should be listed in the estimate under the "Subcontract" column. The cost includes both materials and field costs. 

After backing out the equipment and engineering accounts, twelve cases were within 20% of 149k per equipment item and 10 of them within 10%, This number will be referred to as the TFCF (Total Field Costs Factor). 

As mentioned in section 19.11 the total field cost factor (TFCF) can be modified and adapted to facilities that differ from those in the original study. The modified factor is developed by adjusting each of its cost components (see Table 19.36) to meet the requirements of specific cases. This approach can be very useful for conceptual estimating as well as for the quick checking of estimates prepared by others. 

Appendix M an analysis of the performance of the modified total field cost factor, discussed in Chapter 19, in two actual projects.)... 

In addition to the direct field costs there will be indirect field costs, including... 

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