I have attached a modified file with SERVICE and STRENGTH envelopes which has subsequently been used to do a CODE CHECK.
Here are some points which should be noted.
1. For both service and strength and checks to be carried out, you have to have 2 separate envelopes. In the attached model, you will find 2 separate envelopes namely service ( cases 101 to 107 ) and strength ( cases 201 to 207 ).
2. The LOAD LIST ENV 1 2 has been used just before the design so that the design accounts for both envelopes during design.
3. DFF has to be specified as part of the design parameters if deflection check is to be carried out. This is in addition to defining the service envelope. Since you specified DFF for members 3 10 and 13, the deflection check will be carried out for these members only. If you need to check other members for deflection, specify DFF for those too.
4. Since you need the same combos to be checked for service and strength (ASD), you need to add the combos 201 to 207 which are basically same load combos as 101 to 107 but still needed as STAAD.Pro cannot consider same load combos for both service and strength envelopes.
I hope this helps.
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