Que No Hacer con las Estructurads
XI So,[psop – Intenacional de Estructurasde Acer
Que No Hacer con las Estructurads POOR DESIGNS
Presented by Thomas M. Murray, Ph.D., P.E. Department of Civil and Environmental Engineering Virginia Tech, Blacksburg, Virginia thmurray@vt.edu XI SIMPOSIO-INTERNACIONAL DE ESTRUCTURASDE ACER 09 March 2011 1 1
Lack of Stability Bracing
3
Presented by Professor Thomas Murray, Virginia Tech 09 March 2011
4
1
Que No Hacer con las Estructurads
XI So,[psop – Intenacional de Estructurasde Acer
5
6
7
8
Presented by Professor Thomas Murray, Virginia Tech 09 March 2011
2
Que No Hacer con las Estructurads
XI So,[psop – Intenacional de Estructurasde Acer
Where is the lateral load resistance? K >> 2.0
A SOLUTION 9
10
Virginia Tech Stadium North End Zone Bleachers
?? 11
Presented by Professor Thomas Murray, Virginia Tech 09 March 2011
12
3
Que No Hacer con las Estructurads
XI So,[psop – Intenacional de Estructurasde Acer
Will this detail really work?
Where is the work point?
13
14
Is there a work point?
PROBLEMS WITH FOOTINGS AND ANCHOR RODS
15
Presented by Professor Thomas Murray, Virginia Tech 09 March 2011
4
Que No Hacer con las Estructurads
XI So,[psop – Intenacional de Estructurasde Acer
Was the base plate too strong?
Anchor rods in wrong position
17
Shop rework of column & base plate
19
Presented by Professor Thomas Murray, Virginia Tech 09 March 2011
18
Anchor rods too short
20
5
Que No Hacer con las Estructurads
XI So,[psop – Intenacional de Estructurasde Acer
Anchor rods too long PROBLEMS CAUSED BY OTHER TRADES
21
Who needs the web?
Who needs the flange?
23
Presented by Professor Thomas Murray, Virginia Tech 09 March 2011
24
6
Que No Hacer con las Estructurads
XI So,[psop – Intenacional de Estructurasde Acer
Joist Reinforcement?
Joist Reinforcement?
25
Pipe Interference
26
Bracing Interference
27
Presented by Professor Thomas Murray, Virginia Tech 09 March 2011
28
7
Que No Hacer con las Estructurads
XI So,[psop – Intenacional de Estructurasde Acer
FIELD FABRICATION
30
31
Presented by Professor Thomas Murray, Virginia Tech 09 March 2011
32
8
Que No Hacer con las Estructurads
XI So,[psop – Intenacional de Estructurasde Acer
33
34
35
36
Presented by Professor Thomas Murray, Virginia Tech 09 March 2011
9
Que No Hacer con las Estructurads
XI So,[psop – Intenacional de Estructurasde Acer
Remember:
OOOO
37
38
39
40
Presented by Professor Thomas Murray, Virginia Tech 09 March 2011
10
Que No Hacer con las Estructurads
XI So,[psop – Intenacional de Estructurasde Acer
1940 ft (591 m)
AN ERECTOR’S ERROR
42
60 ft (18.3 m) Section
43
Presented by Professor Thomas Murray, Virginia Tech 09 March 2011
44
11
Que No Hacer con las Estructurads
XI So,[psop – Intenacional de Estructurasde Acer
45
46
47
48
Presented by Professor Thomas Murray, Virginia Tech 09 March 2011
12
Que No Hacer con las Estructurads
XI So,[psop – Intenacional de Estructurasde Acer
1000 ft (305 m) Pickup
24 Car Transmitter Building Hoists 49
50
51
52
Video
Presented by Professor Thomas Murray, Virginia Tech 09 March 2011
13
Que No Hacer con las Estructurads
XI So,[psop – Intenacional de Estructurasde Acer
53
54
55
56
Presented by Professor Thomas Murray, Virginia Tech 09 March 2011
14
Que No Hacer con las Estructurads
XI So,[psop – Intenacional de Estructurasde Acer
57
58
59
60
Presented by Professor Thomas Murray, Virginia Tech 09 March 2011
15
Que No Hacer con las Estructurads
XI So,[psop – Intenacional de Estructurasde Acer
61
62
Thank You!!
63
Presented by Professor Thomas Murray, Virginia Tech 09 March 2011
64
16