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Thank you Guys for answering my questions. So if I eliminate the flat ridge board, it will look something like the attached picture. What about the connection at this point where the 4 hip beams meet and also at the walls?. Regards...

Hello Guys; I am currently working on a patio cover, please see the attached sketch. The architect wants me to remove two interior beams where the king posts are landing. I have seen several hip roofs without interior supports, but I just don't get how they are working. It seems that the...

I am using the Direct Design Method to determine the design moments for a Flat Slab with End Span Simply Supported on wall. My main concern is the detailing of the reinforcement. I am following ACI, Fig. 13.3.8 – and it appears that some areas of my slab will be unreinforced on the top, see...

Here is a Section that shows the Crain Rail Beam seating on top of the corbel ( now trying to replace it with a 1.5" thick plate). Like Teguci said, it will be welded to an embedded plate in the concrete. Thanks...

Thanks "paddingtongreen" Capacity of the Crane: 20 tons Span : 55' Lifting Height: 26'-0" Weight of Trolley: 3,800 lbs Weight of Bridge : 21,540 lbs At the end, I ended up using a concentrated load of 74 kips to my supporting plate, 8" away from the back of my column. Thanks

Hello I designed a corbel for a bridge crane, but now the architect came back and said that he needed additional clearance (from the floor to the bottom of the corbel). They do not want to raise the roof, nor lower the slab. Being that the case, I need to find another way to support my bridge...

Hello Guys; I am designing a two story Single Family Dwelling. The second floor has a 3'-0" projection out of the first floor. I have designed my shearwall, but I need to know how to strap it, I usually use an MST but in this case, I do not have where to strap it to. Attached is a sketch, any...

Thank you guys, I am a beginner and have found this forum to be great. Thanks once again.

I did a quick calc for a 6" cantilever concrete walkway, I would like to know if i am missing something. My minimum reinforcement looks iffy. Thanks Attached is the file,

Hello all; I am designing an underground building which has a length of 200 feet and width of 60 feet. The height of the walls is 29 feet and it will have a dirt cover of 3 feet (The slab will see 3 feet of dirt). EFP pressure from the geo-report is 50 pcf/ft. Seismic is 15 H (inverted...

Thanks for the help guys. I spoke to the designer and told him to speak to welder and see the issues with good constructability. Learned a lot, thanks Tinguindin.

GRoberts; The stiffeners are 12" high with a 4" gap. Regards

The Circular plate thickness is 5/8" I do not see a problem standing the resultant out of flatness on the other side. Thanks

I am the engineering reviewing this design, although the calculations seemed right, I was iffy about the constructability. Thank you for the response.

Hey Guys; I have 61" circular plate that I will be adding stiffeners which are 5/8" thick x 12" and they vary in depth. See attached sketch. I am the structural checking the calcs, which are fine, but is this constructable? The spacing between the stiffeners are less than 4", and you would...

Thanks Ron; 6000 psi seems very high, but I will take into consideration the Windsor Probe. Here is a Picture of what I am talking about. Regards http://files.engineering.com/getfile.aspx?folder=ae21be26-960a-40e6-88cc-9d70d94b3df7&file=Pipe_Support.JPG

Sorry, the title is Concrete Strength. Regards

Hey Guys; I am working on a Pipe Support Design, I will be using Cable Pipe Hangers / Nylon Strap. The problem is that this is a 78" diameter concrete pipe that was built in 1913. I was able to find the plans, but no Concrete Strenght was specified. Any Ideas on the f'c? Thanks Regards

Here is something that I found; http://files.engineering.com/getfile.aspx?folder=14ef4d9b-4934-4fa8-8a15-ee789e17d002&file=Duration_of_Load.doc

SlideRuleEra; ACI 347-04. 3.7—Removal of forms and supports "3.7.2.3—Because the minimum stripping time is a function of concrete strength, the preferred method of determining stripping time is using tests of job-cured cylinders or concrete in place. When the contract documents do not specify...