Search results for query: *

Curious if anybody came across a situation where the architect wanted to change the shape of a column from one floor to the next. In my situation the architect wants to change from a 12x24 concrete column to a 20" dia. column. How do you detail column reinforcement?

Working on a project, 9 storey building with two way slabs and exterior ICF walls. Foundation wall is poured with the strip footing for exterior walls. Problem is the client wants to change the exterior walls to concrete columns which the strip footing obviously cannot support. Anybody have...

I have a six storey bldg., ICF exterior walls and two way slabs with interior columns. The architect has removed the wall at the first floor level. I am proposing columns along the section where the wall has been removed. The columns will extend for the full six storeys with the ICF wall...

Working on a project where the existing TJI's are overstressed. I'm thinking about adding joists to reduce the tributary width problem is Ican't get any nails into the joist. I'm considering using an adhesive inlieu of the nails. Anybody know of a reference for construction adhesives that...

just curious what other engineers do in the following situation; 4 storey wood frame building with two storey atrium along the outside wall. Opening in the diaphragm is 28ft long x 12ft wide. I'm considering two options, running an lvl beam 28 ft long spanning between walls and designing for...

just curious when designing storm sewers should you use the post developed controlled flow or uncontrolled flow?

Have a situation where the elevator shaft in a 7 storey building is too narrow for the elevator from the 4th to 7 th floor. This is a result of a mistake by the formwork contractor. Unknown to myself, until today. the contractor started to chip 5 inches off the 10 thick wall. I'm curious if...

I'm working on a building with a lot of cantilever sections with full storey of brick at the tip. Would it be correct to convert the udl over the design strip at the tip to a point load?

I'm curious about the interpretation of cl.16.9.4 of CSA S304.1-94. Essentially it states brick veneer can be supported on a brick check for up to 11m and then every 3.6m. I have recently noticed other engineers spacing shelf angles every 6m vertically. Would this be in keeping with the intent...

Does anybody have any information or case studies comparing fea to equivalent frame analysis of two way slabs. Are there any significant savings to warrant this type of analysis?

My client is considering to purchase a 9 storey apartment building. Our office was asked to review the record drawings. Everything appeared to be okay with the exception of the shearwall footings. The drawings indicate 15'x15'x3' pads at each end of the shearwall. I have never seen this...

does anybody have experience with icf walls for something like a 6 storey concrete building 300 ft long x 70 ft wide?

does anybody know of a good reference book for designing elevator wall footings?

I am working on project which bound by a swale on one side (which cannot be used to drain this site) and a river. My problem is that I can only drain the site to the river which is located 45 feet from the nearest catchbasin. The ordinary high water mark (OHWM) for the river is 7.42', the top...

trying to determine the amount of storage required for detention pond. using CN=95 and calculated tc=5mins, design storm is based on 5 min intervals for 2 hour and 24 hour storm (based on idf curves). Should I use tc=5mins to develope my unit hydrograph or should I use a 5 min interval, which...

Does anybody know of any references pertaining to this subject (other than yield line method)?

I was recently asked to analyze an irregular shaped building. Each of the wings in the building resemble hockey sticks that are joined with a straight section. The LLRS consists of moment frames in both directions. In addition, there are expansion joints at the locations where the hockey...

I was recently asked to analyze an irregular shaped building. Each of the wings in the building resemble hockey sticks that are joined with a straight section. The LLRS consists of moment frames in both directions. In addition, there are expansion joints at the locations where the hockey...

I'm curious what other engineers do when designing footings. In our office the senior engineers usually always specify reinforcement in the top and bottom of footings when considering to uplift. Regardless if the net effect is actually compression.I usually only specify bottom reinforcement if...

oh by the way we generally use 2.5" of concrete (unreinforced) as a sound barrier and increased fire resistance.