Equipment erection

Polyethylene shrink film wrapping of cormgated ftberboard trays is in common use outside of the United States. Equipment erects the trays, fills the trays with primary packages such as cans or jars, wraps the grouping in shrink film, and heat shrinks the combination. Shrink film wrapping keeps primary and secondary packaging materials clean and dry. 

Equipment erection, including foundations and minor structural work. 

Cook, E.M. Estimating Spray Drying Costs, Chemical Engineering Progress, June 1966, p. 93. Block, L.J. Estimating Machinery and Equipment, Erection Costs, Oil and Gas Journal, Aug. 6, 1973, p. 77.. 

Equipment Erection - 20% of the equipment account is usually a generous allowance and should be used for preliminary estimate. On appropriation or definitive estimate the individual work hours in Table 19.1 should be used. 

The equipment erection hours are rarely more than 7-8% of the total construction hours, and errors in this account will have a very small impact on the total estimated costs. Estimating equipment erection costs as a percentage of the equipment cost is then an acceptable method. 

Knowing the total equipment erection hours is not sufficient for accurate construction progress monitoring the total must be broken down into discrete portions related to specific equipment items. Table 19.1 provides guidelines for the allocation of hours to each equipment item. 

Table 19.1 Typical Equipment Erection Work Hours...

When construction is to be subcontracted, some accounts (civil, insulation, and paint) are usually estimated on a total cost basis, combining both materials and labor. Other accounts (piping, electrical, instrumentation, equipment erection) are estimated and shown separately as material and labor. In that case, the labor should be loaded with the subcontractor s field indirects plus overhead and profit. The field indirects would reflect only the cost of construction management. 

There are three mid-sized mechanical contractors, qualified to do industrial piping and equipment erection, with demonstrated capability of handling projects requiring more than seventy workers. Two of them also have piping fabrication shops and asked to be considered for the prefabricated piping purchase. All of them asked to bid for the structural steel erection. 

Week 35 Piping and equipment erection with option to split. 

The Equipment Erection cost in Appendix L was estimated, following the quick and conservative approach, as 20% of the equipment cost. The work hours were back-calculated at 55/hr. However, this approach does not provide sufficient detail for progress monitoring and control. 

As mentioned in Section H.l the activity breakdown for this example is based on the preliminary estimate in Appendix L that was prepared without the benefit of P ID s and arrangement drawings. This breakdown would be barely adequate for tracking the civil work - site, concrete, and steel erection. However, it is not detailed enough for use for tracking electromechanical work - equipment erection, piping, electrical, and instrumentation. 

Construction Progress Monitoring-Case Study Table H.10 Major Equipment Erection Progress Control... 

M = total number of pieces of equipment fp = installation factor for piping fer = installation factor for equipment erection fei = installation factor for electrical work fi = installation factor for instrumentation and process control fc = installation factor for civil engineering work fs = installation factor for structures and buildings fl = installation factor for lagging, insulation, or paint. 

---