I had a 1 month trial with Robot and was happy to walk away from it. It seemed very cumbersome and not intuitive. Lots and lots of dialogue boxes. I came away thinking the graphics was very good for displaying the structure (cad engine) but very crude graphics for engineering input - loads etc...
Can any advise me industry practice or a name of a reference for design of concrete for the containment area for some heavy fuel oil tanks. We are are required to meet specified permeability requirements and fire requirements. The tank footings have been designed as ring beams. The proposal at...
I would appreciate some help to clarify the definition of Af and E for design of a lattice framework, Figure 6-21.
The area Af is defined as the solid area projected normal to the wind direction.
Does this mean that I add up the projected areas of all members, even those that are hidden behind...
I have had equations for conical and strip loads in the past but I can not find them now. Recently, I have been creating an FEA solid model to get the pressure, and simply using linear elastic elements rather than soil elements. I am a bit suspicious of this approach as I have never had the time...
Thanks for that engsys
It was interesting to see the photoes of concentric conections in Europe. I have never seen them in use and have always been reluctant to use them because of durability, fabrication and erection issues.
Coming back to the original question, many connections are intermediate between pinned and fixed. In this case, the simple answer is to be conservative. That may mean for example assuming pinned for the supported member but it may mean assuming fixed for the supporting member. If you are...
Details of wire ropes:
A wire rope subject to a tensile force initially extends as the overall diameter reduces until the adjacent wires contact each other. This is a permanent extension, and can not be accurately predicted. As a guide, assume 0.25 to 1% extension.
After this extension has...
VOD mentioned cables stretching. They certainly do "stretch" more than solid steel, but it is not a problem for design. The Modulus of Elasticity varies with the ropes construction. I have some published values that vary from 86 to 138 GPa, with most in the range 103-115GPa, and a...
I have often had to design curved I-sections for monorail beams, and they are not straight forward.
There is a problem with using beam elements as most if not all beam element formulations include pure torsion only, not warping torsion. Pure torsion dominates for closed sections, warping for...
