6.建築工事の工程管理に関する研究(5) : 予定工程曲線追跡の方針

概要

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A schedule chart for a construction project should be made to satisfy three conditions; punctuality, quality, and economy, One practical way to do this is to design a scheduled progress curve, and make the actual progress curve conform to it. Construction work is sometimes often delayed. Even if the work is delayed a rushing of work should be avoided, because it is apt to be harmful to the quality and the economy of the construction. If the work is rushed in the later part of the construction period, the actual progress curve will be concave upward. To avoid such a curve, the tangent line of the actual curve should always be kept on the left side of point b after passing point a. (Figure 5) Therefore, when the work has been delayed, the way which the actual curve should follow has to be within the cross-hatched area; the upper limit is the scheduled progress curve, and the lower limit is the approximate scheduled curve up to point a", which is a line straight from a" to the point b. The approximate scheduled curve can be calculated, provided that progress of each partical work is in proportion to time. Point a" is a tangent point on a line to point, touching the approximate scheduled curve. Point a exists between point a' and a". (Point a' is a tangent point of a line to b, touching the scheduled progress curve)
社団法人日本建築学会の論文
1955-09-30