A Study of Lean Construction Practices in Gaza Strip

Table 4.10 Non-value added and value added processes for ground floor column (cont.)
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Cast column part C.
Check column part A
Cast column part A
Remove form work part A, C
Steel work for column part B
Form work column part B
Check column part B
Cast column part B
Remove form work part B
Remove 7 column(error work
Steel work part B for the seven column
Form work part B for the seven column
Checking the column
Cast column
Remove form work
Total
Percentage of value added steps
4.4.9 Ground floor
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
18
10%
Table (4.11) shows seven processes where the number of value added steps is 3 out of 7
steps (43 %) and the total duration in the daily report is 64 hours.
No.
1
2
3
4
5
6
7
1/3
0
1/3
0
1/2
0
0
1/3
0
0
0
0
0
0
0
2
Table 4.11 Non-value added and value added processes for ground floor
Process
Mechanic work for part A,B,C
Preparation work for part A,B
Steel work for part A,B
Cast ground floor for part A,B
Preparation work for part C
Steel work for part C
Cast ground floor for part C
Total
Percentage of value added steps
47
Step
number
1
2
3
4
5
6
7
7
Steps
43%
Value
added
steps
1
0
1/2
1/2
0
1/2
1/2
3
Duration
(hours)
1days=
8hours
8
4
12
8
16
8
8
64
8
8
8
8
12
24
8
8
16
38
8
16
8
8
36
346