I'm reviewing a stair on grade design. It's an exterior stair built into a terraced slope. The stair has temp&shrinkage #4 reinforcement each way. The stair is fairly long maybe 60ft with four flights and three landings and is 6ft wide. They have it detailed with sloped side walls which...
Thanks KootK.
oldestguy, if you are asking about the lateral system for the overall building, I'm not certain yet. I'll be discussing this with the pre-engineered system engineer soon. If the question is about basement wall design, I'm going to have cantilevered wall footings so will not be...
I was planning on designing the wall stem for at-rest pressure and will check the wall which goes full height as fix-pin (for inside face bars) since there will be a wall to floor connection at these locations. For footings, overturning and sliding I'm going to stick with the active earth...
I'm designing a two-story storage building (Like Extra Space Storage) about 320ft x 135ft. It's a walkout basement condition with grade differential between the long sides being 11'-4". I'm the foundation designer. The floor, roof, and above grade walls are a pre-engineered system; but...
I've re-uploaded the stair file as a jpeg. No, the stair looks like a standard stair - when I say stringers I just mean the angled tread run as opposed to the horizontal landing (there are no upturned stringer beams). I'm designing the landing and treads to span together as a one way slab...
I'm working on a concrete framed stair. It is open on the exterior long side, so I've designed the stair to span the long direction between the exterior wall of the building and an intermediate landing beam (stringer and landings together make up the span). I know there are going to be...
Piranha,
Thanks for your input. Structural engineering is work. It's not a passion, but it is a steady paycheck. I think I'm wired for something a little more creative, so I try to focus on the aspects of the job I actually like. I don't mind the problem solving part of analysis and design...
I'm looking for some career advice from my fellow professional engineers. I am at a bit a crossroads. I have 9+ years of experience as a building structural engineer for a small/mid sized (20-30) local one office company. I have learned a lot with this company, progressing from EIT straight...
The clerestory strip windows shown on the elevations conflict with bearing the roof directly on the wall. The piers are not visible from the outside as they align with the face of CMU. Thanks for all the input. I have a design I'm going to stick with for the time being.
I finally came decided on the design approach. The CMU walls braced by girts will be designed as fixed-pinned. I'm providing additional earth face dowels at the base of the walls and increasing the footing sizes slightly for the walls. The net effect is that the load to the girt at top of...
The bump outs are incorporated into architectural, they interrupt and are inset into the CMU so the projection into the space isn't intolerable. 20+ tall columns with the wall girt load might be difficult to make work, but I'll take a look. Thanks.
JAE,
I was designed all of the steel posts with base plates and anchors embedded in the concrete piers. I didn't think to actually embed the steel column in the pier without a base plate. Is this what you're suggesting and is it practical? Are there codes for this type of design? Gravity...
JAE,
Thanks for the input. I thought it might be a challenge to get the diaphragm load all the way to the side walls through the five columns on the end wall, but I could check this. If I can make it work then I wouldn't have to worry about the pier deflection (pin-pin would be negligible)...
