I'm a mechnical engineer and have designed a base frame to support 8 motor driven components. Per customer I have to design to meet ASCE 7-02, 9.14.
I find that in Section 2.0, Combinatins of Loads,equations 2.3.2.5 and 2.3.2.7 are the ones applicable to this case.
So, the questions are;
1)...
I want to check for buckling of a crane rail beam. I am using CMAA 70, Section 3.4.8. The first formula uses a buckling coefficient, K (either compression or shear) and referes to Table 3.4.8.2-1.
1) For I beams, is length "a" the width of the flange?
2) For I beams, is length "b" the distance...
I want to use the allowable stresses listed in 3.4 Allowable Stresses for a calculation. However, for clearification, in CMAA 70 the far right column of listed allowables, 3.4.1, 3.4.2, and 3.4.3, is "Allowable Bearing Stress" the same as bending stress?
I'm a mechanical engineer and am designing a mechanical component and per customer spec. have to use IBC2000 1621 for seismic consideration. I did the Fp calc and used the calculated Fp for lateral and longitudinal forces to design against. I did not do the 1617.1 "effects" calc. nor the 1605...
We have a large assembly building. At one end we have a 10 ton bridge crane followed in series by several 5 ton bridge cranes. All have a lift height of 21 feet.
One of the columns between the 10 ton and the 5 ton next to it was damaged by a fork truck. About 6 inches off the floor. The column...
I received a quote for molds made in China for $12,000. Compared to US quotes of $60,000. Is there a sourse which identifies good, bad, ugly in China? Am I asking for problems having them make in China? Is there a cheaper way to have them made in US? By the way, I'm just getting started putting...
I am using 6x13 channel to brace a frame. The channel is braced horizontally between the frame and a concrete wall. I can't seem to fit a C channel into the formulas in ASD or AISC code.
Any suggestions?
I am doing a calc to determine min. weld size using E308L welding wire. Can you tell me the allowable stress of E308L? I know 304L u/y/allowable is 70/25/25 ksi. Is E308L the same?
For the name plate of a ASME Sec.8, Div. 2 vessel, manufactured with non-ferrous material (SB-247 6061 T6 aluminum), how is MDWT determined? Normal operating temp. will be -421F.
I have fabricated a ASME Sec.8, Div.2, small aluminum vessel which will operate at -421F, 245 psi. Some time ago my AI told me I did not have to do a Charpy impact test of aluminum. Our AI has moved on and I have a new one who states I have to put the Code paragraph which exempts the aluminum on...
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...
