So, I think I would like some opinions from the "been there done that" peoples.
Between two perpendicular wall segments, sketch below
__________________________<wall 1
| | |
| _______| |
| | ^ |
| | < cranked beam |
|____ | |
| |
^wall 2 ^wall 3
there is a cranked beam (torsion beam). Between the cranked beam and
wall 3 is a floor, suspended by the cranked beam and the wall. In
between the cranked beam and wall 2 is a stair. which lands at the
portion of the cranked beam terminating into wall1. total length of
wall 1 is about 28 feet. the stair lands about midway.
the floor uses office live loading 50 psf, and is a joist and deck floor.
Now, wall 2 ends just past the beam and also has a beam landing on it
supporting one wall of load and a roof and one floor length. of the
same joist and deck floor. It is a 12" solid grouted block wall below
into an 8" block wall above. The wall 1 is an 8" block wall solid
grouted below, into an 8" block wall above.
Now, I can design a beam internally to the walls which takes the
cranked beam ends and the torsion loads. However, my main concern is
what the blockwalls can take. I can provide the beam loads tomorrow
morning. My calculations show it can be done, but perhaps I am
missing some elements of surprise... I am happy to share my calcs
with an engineer that would be so happy to gander and give me their
thoughts.
cranked beam size: 10"x 24" with 4 #5 bars top and bott, and 4
intermediate #5 bars spaced in pairs... wall 1 beam is 8"x 48"beam w/
14 #5 bars and #3@3"o.c. stirrups. wall 2 beam is a conjoined beam
12"x 26" beam + 8"x 16" beam. The 12x 26 beam has 4 #5 bars top and
bott and 4 intermediate #5 bars and the 8x16 portion has 8 #5 bars
which round it out. there are two sets of #3@3"o.c. stirrups which
are overlapped about 8 inches.
Best Regards,
Refugio Rochin
******* ****** ******* ******** ******* ******* ******* ***
* Read list FAQ at: http://www.seaint.org/list_FAQ.asp
*
* This email was sent to you via Structural Engineers
* Association of Southern California (SEAOSC) server. To
* subscribe (no fee) or UnSubscribe, please go to:
*
*
http://www.seaint.org/sealist1.asp
*
* Questions to seaint-ad@seaint.org. Remember, any email you
* send to the list is public domain and may be re-posted
* without your permission. Make sure you visit our web
* site at: http://www.seaint.org
******* ****** ****** ****** ******* ****** ****** ********