ASCE 7, Wind Loads
ASCE 7, Wind Loads
(OP)
Colleagues;
I have never used this spec. and have a few stpuid questions as follows;
A. section 6.4.2 requires to calculate appropriate pressure or force coefficients per provisions of 6.7.
B. Section 6.7 says look at Figs 6-3 thru 6-8 for pressure coefficients & table 6-4 thru 6-8 for force coefficients (include gust factor).
Questions
1. For outside piping should we use both pressure & force coefficients? If yes, then the pressure coefficients are not defined in Fig. 6-3 thru 6-8 for outside "non structure" piping. My guess is that we should only use the force coef. per table 6-7. Which leads me to believe that we only need to calculate the forece on the system per expressions given in table 6-1.
2. Table 6-1 if the fundamental frequency of the system is <1 Hz, then to calculate force on a pipiing system we also need to calculate Gf (the gust factor) by rational analysis. What they mean by rational analysis? How is that done?
Thanks in advance,
I have never used this spec. and have a few stpuid questions as follows;
A. section 6.4.2 requires to calculate appropriate pressure or force coefficients per provisions of 6.7.
B. Section 6.7 says look at Figs 6-3 thru 6-8 for pressure coefficients & table 6-4 thru 6-8 for force coefficients (include gust factor).
Questions
1. For outside piping should we use both pressure & force coefficients? If yes, then the pressure coefficients are not defined in Fig. 6-3 thru 6-8 for outside "non structure" piping. My guess is that we should only use the force coef. per table 6-7. Which leads me to believe that we only need to calculate the forece on the system per expressions given in table 6-1.
2. Table 6-1 if the fundamental frequency of the system is <1 Hz, then to calculate force on a pipiing system we also need to calculate Gf (the gust factor) by rational analysis. What they mean by rational analysis? How is that done?
Thanks in advance,






RE: ASCE 7, Wind Loads
RE: ASCE 7, Wind Loads
RE: ASCE 7, Wind Loads
You use either force coefficients or pressure coefficients. What you have described, looks like it should use the force coefficients for open signs and lattice structures for the supports and probably the ones from table 6-7 for the piping.
regards,
chichuck