A Study of Lean Construction Practices in Gaza Strip

4.4.14 First floor building
Table (4.16) shows the eighteen processes that represent first floor building. The
number of value added steps is 5 out of 18 steps (27%) and the total duration in the
daily report is 550 hours.
Table 4.16 Non-value added and value added processes in building for first floor
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Steps
Building work in part A,B for first
layer
Lintel form work under the windows
cast lintel
Remove form work
Building work for part A,B in the
second layer
Lintel form work up the windows
Cast lintel for second layer
Remove form work
Building work up the window
Building work in part C for first layer
Lintel form work under the windows
cast lintel
Remove form work
Building work for part C in the
second layer
Lintel form work up the windows
Cast lintel for second layer
Remove form work
Building work up the window
Total
Percentage of value added steps
51
Step
number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
18
Steps
27%
Value
added
steps
1/2
0
1/2
0
1/2
0
1/2
0
1/2
1/2
0
1/2
0
1/2
0
1/2
0
1/2
5
Duration
(hours)
60
16
6
12
70
24
6
6
40
12
32
10
64
32
24
64
32
40
550