ASCE 7-20 Non Building
ASCE 7-20 Non Building
(OP)
I am a mechanical engineer designing a skid 6ft x 34ft with 8 legs holding process up about 6ft above grade. The customer wants it designed per "Non Building", ASCE 7-02, Section 9.14.
I have cross member bracing on the 8 legs. In the 34ft side, one end of each brace is welded at the bottom of one leg and the opposite end of the brace is welded at the top of the next leg. Does that design constitute a "Steel eccentrically graced frame, moment resisting, connection at columns away from links" per Table 9.5.2.2.
Finally, any recommended text books or handbooks for basic structural design and column-beam connections for a mechanical engineer?
I have cross member bracing on the 8 legs. In the 34ft side, one end of each brace is welded at the bottom of one leg and the opposite end of the brace is welded at the top of the next leg. Does that design constitute a "Steel eccentrically graced frame, moment resisting, connection at columns away from links" per Table 9.5.2.2.
Finally, any recommended text books or handbooks for basic structural design and column-beam connections for a mechanical engineer?






RE: ASCE 7-20 Non Building
AISC ASD and LRFD manuals have some structural detailing in them. You're not obligated to follow them necessarily.
On stuff like this, unless you're building a lot of identical units, it is sometimes more economical to modify the construction just to simplify the design. Use rectangular tubing instead of angles, for example.
RE: ASCE 7-20 Non Building
RE: ASCE 7-20 Non Building
I thought "concentric" meant 2 braces (facing each other) connected at 2 columns and connected at the center of a common beam. As designed, I have 1 brace connected to the low end of 1 column and the top of the next column.
Am I helping or misunderstanding everything?
RE: ASCE 7-20 Non Building
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an eccentric braced brame is one where the members do not meet at a common point. Because the members do not meet at a common point the members induce bending in some of the members. A knee brace is an eccentric braced frame.
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in the first eccetric braced fraome above bending in induced in both column and beam, in the second ecb bending is only induced in the beam - sometimes called a link beam. The first ecb is actually very close to the behavior of a moment frame.
the reason it matters what system you use is becasue of the ammount of ductility the system can generate. concentric braced frames are very stiff not very ductile. moment frames are not very stiff. but very ductile. ecentric braced frames are soewhere in the middle
check out this link. be sure to click on the examples link at the bottom.
http://u
RE: ASCE 7-20 Non Building
RE: ASCE 7-20 Non Building
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RE: ASCE 7-20 Non Building
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RE: ASCE 7-20 Non Building
RE: ASCE 7-20 Non Building
RE: ASCE 7-20 Non Building
RE: ASCE 7-20 Non Building
RE: ASCE 7-20 Non Building
however i would think there would have to have some area that you are supporting weather it be roof or mech equipment. the structure does not really care what you call it but you are supporting something with you brace.
RE: ASCE 7-20 Non Building
Thank you in advance.