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Wind joint patterns

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ceaof

Structural
May 17, 2016
1
Hi everybody

I am having a problem with my SAP2000 modeling.
I want to insert a surface pressure to the walls of a building that varies with the height.
I have calculated the desired area load for 5 different points on the building, for each 7,5 meters. Here i have the results:

For height = 0 meters, area load = 0,00 kN/m²
7,5 meters, area load = 0,82 kN/m²
15 1,01
22,5 1,11
30 1,20
37,5 1,26
Loads according to brazilian wind standards

I tried to make a joint pattern with z coordinates and the following weights, but the values dont match, and it is doing inverted, the load at the top of the building is zero and at the bottom is max (the desired pressure is wind, so it increases with height).
I wish to know if SAP2000 makes an interpolation for a parabolic function, and how should i change the joint pattern values to have a desired area load.

Thank you for the support,
Carlos
 
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