 |
| الكاتب | ارسال |
|---|
skyhook
Member
| تاريخ الالتحاق: | السبت مارس 15th, 2008 |
| الموقع: | BT Or Bust |
| عدد المواضيع: | 1021 |
| Exams Taken: | PD, GS, LF, ME, BD/MM, CD, SP, BP, BT | | Exams Passed: | PD, GS, LF, ME, BD/MM, CD, SP, BP | | Describes Me: | support where beam or wall not available |
| Status: |
Offline
|
| مستوى: |    |
|
كتب: الجمعة أغسطس 8th, 2008 01:00 am |
|
So, in going through deflection and max moment exercises, kaplan has presented the necessity to do seperate calcs for live vs. dead load. The building code also clearly allows for this(L/360, L/240).
Why doesn't "total load" simply govern ? Thanks for your time.
|
skyhook
Member
| تاريخ الالتحاق: | السبت مارس 15th, 2008 |
| الموقع: | BT Or Bust |
| عدد المواضيع: | 1021 |
| Exams Taken: | PD, GS, LF, ME, BD/MM, CD, SP, BP, BT | | Exams Passed: | PD, GS, LF, ME, BD/MM, CD, SP, BP | | Describes Me: | support where beam or wall not available |
| Status: |
Offline
|
| مستوى: | |
|
كتب: الجمعة أغسطس 8th, 2008 03:29 pm |
|
| ...ground control to major tom ?
|
baskinnd
Member
| تاريخ الالتحاق: | الجمعة يونيو 22nd, 2007 |
| الموقع: | Texas USA |
| عدد المواضيع: | 188 |
| Exams Taken: | PD, GS, LF, ME, BD/MM, CD, SP, BP, BT | | Exams Passed: | PD, GS, LF, ME, BD/MM, CD, SP, BP, BT | | Describes Me: | done! |
| Status: |
Offline
|
| مستوى: | |
|
كتب: الاحد أغسطس 10th, 2008 03:10 am |
|
lol i don't know, sounds like a valid question. i guess you're always finding the total load, its just two factors in that process. you just have to consider both when designing a building structure and that's why they seperate the two concepts. there's the weight of the building structure itself, but hey don't forget all the people and computers and snow on top too.
|
skyhook
Member
| تاريخ الالتحاق: | السبت مارس 15th, 2008 |
| الموقع: | BT Or Bust |
| عدد المواضيع: | 1021 |
| Exams Taken: | PD, GS, LF, ME, BD/MM, CD, SP, BP, BT | | Exams Passed: | PD, GS, LF, ME, BD/MM, CD, SP, BP | | Describes Me: | support where beam or wall not available |
| Status: |
Offline
|
| مستوى: | |
|
كتب: الاحد أغسطس 10th, 2008 05:26 am |
|
Thanks...based on yours and other local response(s), I have concluded that the code allowances (and seperate calcs) for LL and DL are of a value engineering significance,... to avoid a strict total load analysis that would always require larger members, shorter spans, etc... in every circumstance.
An engineer told me, that much of the deflection factors the code builds in are for as much psychological reasons as structural. Sagging beams can calc out, they just don't look right.
|
baskinnd
Member
| تاريخ الالتحاق: | الجمعة يونيو 22nd, 2007 |
| الموقع: | Texas USA |
| عدد المواضيع: | 188 |
| Exams Taken: | PD, GS, LF, ME, BD/MM, CD, SP, BP, BT | | Exams Passed: | PD, GS, LF, ME, BD/MM, CD, SP, BP, BT | | Describes Me: | done! |
| Status: |
Offline
|
| مستوى: | |
|
كتب: الاحد أغسطس 10th, 2008 02:34 pm |
|
yes, it reminds me of a story my professor told us. he built a house that cantilevered over a hillside. it made his wife nervous so he hung a collumn from it.
|
skyhook
Member
| تاريخ الالتحاق: | السبت مارس 15th, 2008 |
| الموقع: | BT Or Bust |
| عدد المواضيع: | 1021 |
| Exams Taken: | PD, GS, LF, ME, BD/MM, CD, SP, BP, BT | | Exams Passed: | PD, GS, LF, ME, BD/MM, CD, SP, BP | | Describes Me: | support where beam or wall not available |
| Status: |
Offline
|
| مستوى: | |
|
كتب: الاحد أغسطس 10th, 2008 05:47 pm |
|
| "ah yes, my cousin, the hanging column", laughed skyhook.
|
الوقت الحالي هو 11:26 pm | |
|
|
|
|
