Hello, Kindly clarify the following queries with regard to Wind load:
1. In the applying wind load tab, What does the "Open structure" tab mean? What If I check this box?
2. What does exposure to a certain wind load mean? If we select all nodes in exposure, do the same wind load apply, at a given height, for front and rear members?
3. What does this statement mean from API-4F specification cl.8.3.3.1. "
"The designer shall give consideration to the fact that shielding is not uniform over the entire drilling
structure and that any individual member or local assemblage of members may not be shielded. This
consideration shall be documented. As a minimum, the designer shall calculate interaction ratios for
individual members using member forces from analyses utilizing global wind loads Ft, with additional
superimposed member loading attributable to the member itself or a local assemblage of members being
unshielded. The additional loading on a member that is unshielded is calculated as follows.
Fm × (1 – Ksh × Gf)"
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