Recent content by jmas

Dear Tick: How many percentage of drawings you've been engaged with were completely tolerance-specified?

Does it required (as a rule) that every technical drawings (with dimension) should have specified condition for tolerancing? In other words can some dimension be left without tolerances?

To IJR: Only arc length is known, not chord.

To Motorspirit: How you can find compression force in every single members of a cone roof structure composing of central ring, radial rafters and circumferential girders (by hand calc.), Having different loading, dead load, ...?

Thamks Motorspirit for your reply. Please tell me what do you mean by "...a span/250-300 range"? FYI, the problem arised when already designed roof structure started to build at site where it is found that single beam of IPE180 (means H=180mm) have a ~20 cm deflection with length of ~21m. So...

To vpl: the link is http://www.panoramio.com/photo/16091735 which is uploaded (as the link said) by Yeong Wei Kheen and related to Dung Quat Refinery : Unit 34, perhaps your plant moved to vietnam overnight?! All of the pumps that i've seen and transfer seawater was made mainly from SS (i mean...

Thank you cvg for your reply. Let see it from this point of view.if take a look to the picture again it seems the piping is not CS. it resembles more to the HDPE (or GRP), which is weak in shear comparing to the CS. in this regard i think settlement of concrete intake is main reason to have A/G...

Thanks TenPenny for your reply. But, please consider that with fixed suction level we can have both A/G and U/G discharge. Considering expensive SS for pumps, less material saves a lot of money, that cover costs for civil works (openings for access?). if take a look to the picture again it seems...

Does anybody knows why the designer of this intake, decided to have a above-ground discharge for seawater pumps, first, and then let them going U/G after some meters? Let it asked in another way. If the outlet run U/G from the begining, then we have shorter pump, and therefore less material for...

Does anybody knows why the designer of this intake, decided to have a above-ground discharge for seawater pumps, first, and then let them going U/G after some meters? Let consider it in another way. If the outlet run U/G from the begining, then we have shorter pump, and therefore less material...

Does anybody know that what percentage(approx.) of US companies are ISO 9000/9001/9002 certified?

Thanks everybody for responses. The drawing which i attached is actually drawn in Autocad but approximately. As CarlB said i also reached to the fact that there isn't any exact solution to the A/M broblem, until another Euler arises on the earth.

Let's try this approach. Suppose length of circular arc is L and half of distance between end of lines is b (see attached file). then we will have: RxAlpha=L/2 Rxsin(Alpha)=b So we have: Alpha-Cxsin(Alpha)=0 where C=L/2/b This will give us a non-linear equation that i don't think whether it has...

Steve, your confession gave me pleasure in deep.

Thank you CarlB. Would you please tell me how it can be drawn in autocad? after i create two lines, there isn't any option for draw of a circular arc with two "start" and "end" points and "length" of arc.