The construction network plan for a unit is given in Fig below. Table 2 gives the man-hours required and team size for each operation. Prepare a line of balance schedule for a contract of 30 houses using a target rate of build 4 houses per week. Assume a minimum buffer time of two days between operations and operation is performed as six days per week and 8-hours day. *Hint: When you assigning the ACTUAL GANG SIZE please choose the nearest multiple values (a) What is the overall duration of the project? (b) When the house number 15 will be completed? 3 B E 2. 5 . F 4 1 D TABLE 4 - LINE OF BALANCE CALCULATIONS ELAPSED TIME MAN THEORETICAL BETWEEN START OF MEN PER OPERATION HOURS ACTUAL GANG NATURAL RATE SIZE (IN OF BUILT MULTIPLES OF (U=Rxg/G) Q) (g) GANG SIZE (G=RxM/WHW) TIME per OPERATION (days) T=M/(QxWHD)) OPERATION (Q) (M) FIRST AND LAST (S=(n- 1)xWDW/U) A 28 3 B 36 4 D 36 2 E 35 2 F 21 3 Q.1. What is the overall duration of the project? 046-40 days 041-44 days 037-40 days 030-33 days Q.2. When the house number 15 will be completed? 023-25 days 030-33 days 029-32 days 038-41 days Crash the network schedule given in figure 2. Take the activity durations from the Table 2. Indirect cost = $ 100/day. B E A F G 2 3 5 D TABLE 2 Duration Direct Cost (5) Days shortened ? ? ? Activity Normal Crash Normal Crash Cost Day Cost/day Cycle Cycle Cycle Cycle Cycle 1 2 3 4 5 10 4 10 B D E F G 9 3 8 18 12 19 1000 500 400 1000 300 120 600 1090 520 500 1060 390 200 780 Days cut 13 4 5 5 3 Project Duration Increased cost/day Total Direct cost Total Indirect cost General Total Cost 1) What is the normal duration without any crashing? 032 029 034 036 2) What is the minimum total direct cost? 03.920 03870 04020 04130 3) What is the total indirect cost at the optimum time? O3,500 O3,200 O3,100 O3,000 4) What is the optimum time? 031 032 034 030 5) In which duration the indirect cost goes to the maximum? 036 035 033 034