strengthening of slabs

1:05:46

5:58

2:10

00:47

1:01:56

8:51

00:17

42:59

26:07

2:41

3:32

2:36

10:19

7:19

36:13

2:51

1:48

3:55

17:52

7:26

14:17

25:30

8:57

4:37

1:46

3:48

8:45

5:18

13:58

1:39:45

1:10:08

00:41

18:49

14:47

3:09

1:32

1:00

8:09

29:06

40:10

8:11

41:50

4:56

8:01

9:46

4:44

3:29

3:06

4:23

2:39

5:20

3:21

3:59

1:00

14:25

52:49

43:43

7:42

5:34

20:27