A Study of Lean Construction Practices in Gaza Strip
A Study of Lean Construction Practices in Gaza Strip
A Study of Lean Construction Practices in Gaza Strip
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4.5.7 Ground beam<br />
Table (4.24) shows that ground beam duration is equal to 118.59 hours. Before apply<strong>in</strong>g<br />
lean tools was 192 hours, and the percent <strong>of</strong> value added time 30%, the actual duration<br />
was 20%, and value added step percent is 67 %. It was 50% before apply<strong>in</strong>g lean tools.<br />
No.<br />
1<br />
2<br />
3<br />
4<br />
Table 4.24 Waste elim<strong>in</strong>ation for ground beam<br />
Process<br />
Form work for ground<br />
beam "A-B-C"<br />
Steel work<br />
Install and test<br />
UPVC+ earth electric<br />
Earth electric work<br />
5 Caste ground beam<br />
6 Remove form work<br />
Total<br />
Percentage <strong>of</strong> value added<br />
4.5.8 Column ground floor<br />
Step<br />
number<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
6<br />
Step<br />
67%<br />
Value<br />
added step<br />
0<br />
1<br />
1<br />
1<br />
1<br />
0<br />
4<br />
Duration<br />
(hours)<br />
56.85<br />
14<br />
6.21<br />
11.76<br />
Duration<br />
Value<br />
added<br />
time<br />
0<br />
14<br />
6.21<br />
11.76<br />
4.19 4.19<br />
25.58 0<br />
118.59 36.16<br />
30%<br />
Table (4.23) shows that column ground floor duration is equal to 200.6 hours. Before<br />
apply<strong>in</strong>g lean tools was 346 hours, and the percent <strong>of</strong> value added time 8.5%, the actual<br />
duration was 4.7%, and value added step percent is 50 %. It was 10% before apply<strong>in</strong>g<br />
lean tools.<br />
No.<br />
Table 4.25 Waste elim<strong>in</strong>ation for ground floor column<br />
Process<br />
1 Steel work<br />
2 Form work<br />
3 Cast column<br />
4 Remove form work<br />
Total<br />
Percentage <strong>of</strong> value added<br />
Step<br />
numb<br />
er<br />
1<br />
2<br />
3<br />
4<br />
4<br />
Step<br />
50%<br />
62<br />
Value<br />
creatio<br />
n step<br />
1<br />
0<br />
1<br />
0<br />
2<br />
Duration<br />
(hours)<br />
15.87<br />
163.82<br />
1.23<br />
19.68<br />
200.6<br />
Duration<br />
Value<br />
added<br />
time (hours)<br />
15.87<br />
0<br />
1.23<br />
0<br />
17.1<br />
8.5%