![]() ![]() It is vital that this serviceability condition be investigated and considered during design. You just need to set the base unit to metric and generate the floor vibration report as you normally do.With the increased use of lighter beam sizes and longer spans made possible by higher steel and material strengths and with larger, more open and more lightly load floor areas due to advances in office technology and utilization, the lighter sleeker floor systems are more susceptible to adverse vibrations than ever before. You do not need to make any changes to your input. So for now, I would suggest that you use the base unit as English if you are using the floor vibration report. For example instead of using 0.29 ( in KN) as the value for Po, the software is just using a value of 0.065 ( which is the right value for English units - Kips ). The other thing that I noted is that the value of Po is not changed appropriately for calculations when using metric units. So based on the current data you posted, Fn = 0.18 sqrt = 5.5 Hz …equation 3.3 I have recommended averaging the results for the joist mode and the girder mode in the future implementation. ![]() There is no way for the user to influence that. In the current implementation, the software calculates the results for the combined mode considering the first beam/joist and the first girder only. This will be implemented in the next version. So I have recommended an option to be introduced in the software so that users can directly specify the condition ( all 4 options will be made available in a combo box ). ![]() Only the first two are currently there but the logic behind when to use which one, is not properly implemented. I went over the floor vibration implementation in detail with a developer this morning and found that all of the four conditions outlined in the table 4.1 was not implemented. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |