Conceptual RMC/Time Synthesis

by Marvin Gates, (F.ASCE), Pres.; Construction Estimating, Inc., West Hartford, Conn. and Lect., Worcester Polytechnic Inst., Worcester, Mass.,
Amerigo Scarpa, (F.ASCE), Pres.; Gates-Scarpa and Assoc., Inc., West Hartford, Conn. and Lect., Hartford State Technical Coll., Hartford, Conn.,

Serial Information: Journal of the Construction Division, 1976, Vol. 102, Issue 2, Pg. 307-323

Document Type: Journal Paper


A model is developed for synthesizing the logistics of construction projects in the early stages of design. It is based on the Bar Chart that is subsequently expanded into the RMC Chart, the RMC Demand Chart, and the Cumulative RMC Demand Chart. Resources and monetary corrollatives can now be estimated quantitatively and chronologically from the budget estimate and typical ratios of maximum to average demand. The inevitable apparent lag of construction value in place compared to elapsed time is explained. Many other resource/monetary/time relationships are equated to yield a valuable model for preliminary planning. A worked-out example of labor demand and cash flow for the entire life of a project is included. The significance of these solutions is that they evolve from a minimal amount of information. A General Progress Control Chart is developed for monitoring construction progress.

Subject Headings: Logistics | Budgets | Value engineering | Labor | Lifeline systems

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