Simon-189
2022-01-27 13:44:22
- #1
Hello,
regarding the topic of statics, I can say as a steel construction engineer that many safety factors have to be considered. For example, there are screw connections that must not be loaded beyond 50% of their capacity. The same applies to anchor verifications. If an anchor is loaded more than 90%, I choose the next larger one for my construction. And why? In the shell construction phase, where it is primarily about statics, no one yet knows what the client will later do with the construction, tinker with it, or attach additional loads. The additional costs are marginal, and the increase in safety continues.
Because what is stated in the statics calculations assumes optimal conditions. Are these always present on site? Concrete without air and/or dirt inclusions, weld seams without slag inclusions, and optimal depth of fusion zones...
As a tip, if in the static calculation a profile HEA 240 width 240mm height 230mm results and you find that too large as a single profile, the statics engineer can also calculate two profiles placed side by side and bolted together. Then maybe 2x HEA 140 with a total width of 280mm but a height of 133mm results. And voilà, 100mm height gained.
regarding the topic of statics, I can say as a steel construction engineer that many safety factors have to be considered. For example, there are screw connections that must not be loaded beyond 50% of their capacity. The same applies to anchor verifications. If an anchor is loaded more than 90%, I choose the next larger one for my construction. And why? In the shell construction phase, where it is primarily about statics, no one yet knows what the client will later do with the construction, tinker with it, or attach additional loads. The additional costs are marginal, and the increase in safety continues.
Because what is stated in the statics calculations assumes optimal conditions. Are these always present on site? Concrete without air and/or dirt inclusions, weld seams without slag inclusions, and optimal depth of fusion zones...
As a tip, if in the static calculation a profile HEA 240 width 240mm height 230mm results and you find that too large as a single profile, the statics engineer can also calculate two profiles placed side by side and bolted together. Then maybe 2x HEA 140 with a total width of 280mm but a height of 133mm results. And voilà, 100mm height gained.