A Study of Lean Construction Practices in Gaza Strip

4.4.10 Ground floor slab
The eleven processes that represent ground floor slab are shown Table (4.12). We notice
that the number of value added steps is 4 out of 11 steps (36%) and the total duration in
the daily report is 168 hours.
Table 4.12 Non-value added and value added processes in slab
No. Process
Step
number
Step
Value added
steps
Duration
/hours
1 Form work for part A,B 1 0 48
2 Hollow cement block for part A,B 2 1/2
3 Electric work for part A,B 3 1/2
4 Mechanical work for part A,B 4 1/2
5 Cast slab ground floor part A,B 5 1/2
6 Form work fort part C 6 0 32
7 Hollow cement bloc for part C 7 1/2
8 Electric work for part C 8 1/2
9 Mechanical work for part C 9 1/2
10 Cast slab for part C 10 1/2
11 Remove form work for part A,B,C 11 0 26
Total 11 4
Percentage of value added steps 36%
4.4.11 First floor columns
Table (4.13) shows the twelve processes that constitute the first floor columns. The
number of value added steps is 2 out of 12 steps (16 %) and the total duration in the
daily report is 300 hours.
48
6
6
8
8
12
8
6
8
168