hi cadcammike
if you need a 3D helix i think you'd better use script files:
write a program (for example in quickbasic)to find ellips' points(x/a)^2+(y/b)^2=1(you'll find x,y and z(which is your optional increaments in z direction ))then save your points in a file with "scr"...
dear PLB
thanks for your answer,i check origin offset but problem is somwhere else.i don't know if something might be wrong with plotter configuration? does anybody have any tips?
thank you again
i'm trying to plot my drawings which are drafted on B size paper in autocad and our ploter is D size, in plotting dialog box i choose D paper size and i check "scale to fit" box then i define corners of the drawing as the window, in preview everything is ok but after plot i see that...
i hope my answer will be correct and useful:
suppose a pipe with radius R and length L is sunk in water by depth x(from surface of water to the bottom of the pipe)
so:in eqilibrium F=W which F is hydraulic force and=P.A, P:pressure and A:effective area.and W is weight of the pipe.
P is...
in static face sealing situation(two flanges)when there is no internal pressure(just oil hydrostataic pres.)how much force must be applied by bolts to make sure that the oring seals the faces.because of ISO9000 i need a refference for my calculations.
thank you all
