We have several air cooler systems where we had to qualify the nozzle loads for OPE+WIND at a hurricane zone category 3. Since the loads were too high, and we couldn't meet the allowable loads, the vendor agreed to use weight+wind only because they will shut down the systems (no temperature). The project plans that all the systems will be shut down 5 hours before the hurricane hits the facility.

Which case should I use to report weight + wind to the vendor?

1. Cases 19 to 21 (segregated of wind)
2. Cases 29 to 32 (segregated of wind + weight)
3. Create a new load case using W+P1+WIND1,2,3 and 4.

What would be the difference among these 3 options?

These are the load cases used in my project.
1 (HGR) CASE NOT ACTIVE
2 (HGR) CASE NOT ACTIVE
3 (HYD) WNC+HP+H
4 (SUS) WNC+H
5 (OPE) W+T1+P1+H+F1
6 (OPE) W+T2+P1+H+F1
7 (OPE) W+T3+P1+H+F1
8 (OPE) W+T1+P1+H+F1+WIN1
9 (OPE) W+T1+P1+H+F1+WIN2
10 (OPE) W+T1+P1+H+F1+WIN3
11 (OPE) W+T1+P1+H+F1+WIN4
12 (OPE) W+T1+P1+H+U1+F1
13 (OPE) W+T1+P1+H+U2+F1
14 (OPE) W+T1+P1+H+U3+F1
15 (OPE) W+T1+P1+H-U1+F1
16 (OPE) W+T1+P1+H-U2+F1
17 (OPE) W+T1+P1+H-U3+F1
18 (SUS) W+P1+H+F1
19 (OCC) L19=L8-L5
20 (OCC) L20=L9-L5
21 (OCC) L21=L10-L5
22 (OCC) L22=L11-L5
23 (OCC) L23=L12-L5
24 (OCC) L24=L13-L5
25 (OCC) L25=L14-L5
26 (OCC) L26=L15-L5
27 (OCC) L27=L16-L5
28 (OCC) L28=L17-L5
29 (OCC) L29=L19+L18
30 (OCC) L30=L20+L18
31 (OCC) L31=L21+L18
32 (OCC) L32=L22+L18
33 (OCC) L33=L23+L18
34 (OCC) L34=L24+L18
35 (OCC) L35=L25+L18
36 (OCC) L36=L26+L18
37 (OCC) L37=L27+L18
38 (OCC) L38=L28+L18
39 (EXP) L39=L5-L18
40 (EXP) L40=L6-L18
41 (EXP) L41=L7-L18
42 (EXP) L42=L6-L7

Best regards,