A Study of Lean Construction Practices in Gaza Strip

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4.5.7 Ground beam Table (4.24) shows that ground beam duration is equal to 118.59 hours. Before applying lean tools was 192 hours, and the percent of value added time 30%, the actual duration was 20%, and value added step percent is 67 %. It was 50% before applying lean tools. No. 1 2 3 4 Table 4.24 Waste elimination for ground beam Process Form work for ground beam "A-B-C" Steel work Install and test UPVC+ earth electric Earth electric work 5 Caste ground beam 6 Remove form work Total Percentage of value added 4.5.8 Column ground floor Step number 1 2 3 4 5 6 6 Step 67% Value added step 0 1 1 1 1 0 4 Duration (hours) 56.85 14 6.21 11.76 Duration Value added time 0 14 6.21 11.76 4.19 4.19 25.58 0 118.59 36.16 30% Table (4.23) shows that column ground floor duration is equal to 200.6 hours. Before applying lean tools was 346 hours, and the percent of value added time 8.5%, the actual duration was 4.7%, and value added step percent is 50 %. It was 10% before applying lean tools. No. Table 4.25 Waste elimination for ground floor column Process 1 Steel work 2 Form work 3 Cast column 4 Remove form work Total Percentage of value added Step numb er 1 2 3 4 4 Step 50% 62 Value creatio n step 1 0 1 0 2 Duration (hours) 15.87 163.82 1.23 19.68 200.6 Duration Value added time (hours) 15.87 0 1.23 0 17.1 8.5%
4.5.9 Ground floor Table (4.26) shows that ground floor duration is equal to 47.56 hours. Before applying lean tools was 64 hours, and the percent of value added time 77%, the actual duration was 55%, and value added step percent is 75 %. It was 57% before applying lean tools. No. Table 4.26 Waste elimination for ground floor Process 1 Preparation work 2 Steel work 3 Mechanical work 4 Cast concrete Total Percentage of value added Step number 1 2 3 4 4 Step 75% Value added step 0 1 1 1 3 Duration 10.99 27.03 4.95 4.59 47.56 Duration 77% Value added time 0 27.03 4.95 4.59 36.57 4.5.10 Ground floor slab Table (4.27) shows that slab ground floor duration is equal to 142.83 hours. Before applying lean tools was 168 hours, and the percent of value added time 49% the actual duration was 41%, and value added step percent is 67 %. It was 44% before applying lean tools. No. Table 4.27 Waste elimination for ground floor slab Process 1 Form work 2 Hollow cement block 3 Steel work Electric + mechanic 4 work 5 Cast concrete 6 Remove form work Total Percentage of value added Step number 1 2 3 4 5 6 6 63 Step 67% Value added step 0 1 1 1 1 0 4 Duration 31.58 19.85 32.86 8.69 Duration Value added time 0 19.85 32.86 8.69 8.98 8.98 40.87 0 142.83 70.38 49%
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The Islamic University of Gaza Dean
Page 4 and 5:
Acknowledgment I would like to expr
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ABSTRACT This research deals with t
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2.5.6 Increase Output Flexibility .
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Appendices Appendix (A): Daily Repo
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List of Tables Table 2.1: Conceptua
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List of Figures Figure 2.1: Reducti
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1.1 Statement of the Problem Most o
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2.1 Lean Construction History Chapt
Page 20 and 21:
2.3 Impact of Lean Construction Acc
Page 22 and 23:
Table 2.1 Conceptualization of lean
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for measuring the percent plan comp
Page 26 and 27: 2.5.6 Increase output flexibility F
Page 28 and 29: � The more wastes inherent in the
Page 30 and 31: 3. System requires the need to deve
Page 32 and 33: the work flow, material flow, produ
Page 34 and 35: • Straighten Next, materials were
Page 36 and 37: Material Productivity = Total Outpu
Page 38 and 39: investigation showed that 25 percen
Page 40 and 41: 7. Poor technology of equipment. 8.
Page 42 and 43: 2. Unnecessary material handling. 3
Page 44 and 45: inventory (Wrong storage of materia
Page 46 and 47: Main Activity Mobilization and exca
Page 48 and 49: 4. Sort the candidates in order of
Page 50 and 51: 4.2 Project Activities Lean constru
Page 52 and 53: Table 4.2 represents the resources,
Page 54 and 55: Main Activity Slab work Building wo
Page 56 and 57: 4.4.1 Mobilization and excavation T
Page 58 and 59: 4.4.4 Neck column Table (4.6) shows
Page 60 and 61: 4.4.7 Ground beam The twelve proces
Page 62 and 63: 4.4.10 Ground floor slab The eleven
Page 64 and 65: No. 9 10 11 Table 4.14 Non-value ad
Page 66 and 67: 4.5 Remove or Reduce the Influence
Page 68 and 69: The result by using arena simulatio
Page 70 and 71: Table 4.17 Simulation results No. A
Page 72 and 73: Table 4.17 Simulation results (Cont
Page 74 and 75: 4.5.3 Foundation Table (4.20) shows
Page 78 and 79: 4.5.11 Column first floor Table (4.
Page 80 and 81: 4.6 Identify the Cause of Waste Tab
Page 82 and 83: Percent of value adding time 35% 30
Page 84 and 85: Table 4.33 Total project duration N
Page 86 and 87: Then, the processes with the greate
Page 88 and 89: number of workers to 12 workers sho
Page 90 and 91: Activity Process Ground floor Colum
Page 92 and 93: Actual project duration was 6000 ho
Page 94 and 95: Date Process Assigned Process Compl
Page 96 and 97: 5.1 Conclusion Chapter Five Conclus
Page 98 and 99: References 1. Abudallah Fawaz , (20
Page 100 and 101: 27. Graham, P. and Smithers, G., (1
Page 102 and 103: 51. Serpell, A.; Venturi, A. and Co
Page 104 and 105: Appendices (A) Daily report Date Ac
Page 106 and 107: 04/09/2003 06/09/2003 07/09/2003 08
Page 108 and 109: 18/12/2003 20/12/2003 21/12/2003 22
Page 110 and 111: 11/04/2004 12/04/2004 13/04/2004 14
Page 112 and 113: Appendix (B) Arena Simulation Compu
Page 114: Appendix (C ) Simulation result of
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A Study of Lean Construction Practices in Gaza Strip

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