This is one of the more frustrating things I've encountered because it is never done right and the fix is not pretty.
Anyway in multi-family buildings the stair shafts can be masonry in many cases but the stairs are wood. With the typical stair layout there is a landing beam that picks up quite...
Wondering what the thoughts on here regarding wet setting anchor rods. In my opinion it is implicitly prohibited by ACI as the two types are cast-in which is defined as having concrete cast around the anchor rod or post-installed which is defined as anchoring into hardened concrete. Since...
Any users of RISA Floor and Foundation in conjunction with RISA 3D have any opinions as to how it compares to RAM? I have RISA 3D and RAM both but am intrigued by ditching RAM in favor of adding RISA Floor.
RAM is good at designing steel beams and columns for gravity loads, but seems to fall...
I hear that these days company loyalty is not really a thing anymore. When there is a crunch tough decisions have to be made and even long term employees have to be let go in addition to those who have personal friendships with the boss. I've witnessed the aftermath of a layoff of a person who...
This one is for the non-Illinois based SEs who have applied for the Illinois SE license less than 8 years after graduating college with a BSE degree.
Has anyone ever been deferred because of issues with their transcript? I recently was deferred, although am protesting, because my transcript...
I currently live in a house that is on a well. Last summer the well had to be replaced. During the driving of the new well casing the house moved at about 25ft down and there appeared several cracks in the drywall on the upper level, but also cracks in the masonry foundation wall. The...
I graduated with only a BS in Civil Engineering and proceeded directly into work. I've worked at consulting companies performing structural design for around 6 years. Is there any point in going back to school to get a MS?
Here is a bit of personal info for all of those who may provide...
I found out recently that I have passed the SE exam (Passed the Vertical Forces the first time and Lateral forces on my first retake). Now I'm working on applying for my SE license. Assuming I have no issues with the paperwork and I get my license, how should I go about asking for a raise and...
If I have a steel moment frame, does the base fixity have an affect on the R value used for seismic design? The R value for a cantilever column system is 1.5, and I wasn't sure if fixing the base of the moment frame would somehow create a combined system of moment frame and cantilever column...
Hello,
I have a question regarding seismic force distribution to vertical elements in which the the diaphragm is flexible and the plan is irregular. I have attached a sketch as to what I am referring to. My goal is to determine the forces in the three shear walls shown. I am concerned with...
Engineers,
I am going through AISC 13th Section J10 and trying to get my head wrapped around the stiffener requirements. From what I gather there are three different types of transverse stiffeners:
Full Depth (extending from one loaded flange to the opposite “k”)
Partial Depth (extending...
Hello,
I have a building in which there are rooftop structures that are enclosed by a 14ft high wall on all four sides. The wall is going to be supported off of vertical members with kicker braces going back to points on the roof. The mean roof elevation is around 22ft. In reading ASCE 7-05 it...
I am working on a project in which something interesting came up regarding existing precast. The precast plank was installed per 1950s drawings. On top of the exterior of the precast there is/was a concrete curb. The curb was going to be demolished, and a new one installed. In the process of...
So I’ve been studying for the SE exam and am spending what little money I have on the millions of codes referenced in the exam. For anyone who has taken the exam, are the following codes required, or is there a way around them
AISC Seismic Design Manual: I have AISC 341-10 and don’t know if I...
I have an upcoming project that is going to be utilizing curved glulam beams supported by HSS columns. The building will be in a high seismic area (SDC >=D). I'm trying to figure out possibilities for providing lateral stability to the structure. Do braced frames in seismic regions require a...
I am going to be working on an expansion to an existing warehouse that is located in Seismic Design Category E. The building was designed in 1978 thus there is a very distinct possibility that the detailing does not meet current code. The main seismic load resisting system is precast shear...
Is it generally a good idea to list R, Cd, and Ω for each direction of seismic loading on structural drawings? I would imagine when using a R=3 system, it would only be necessary to include one set of R, Cd, and Ω.
Thanks.
Seismic rookie here.
Can someone give an elementary explanation of how the seismic load resisting system is integrated with a building? From my understanding, the SLRS is meant to prevent the collapse of a structure in the event of a large earthquake, but that damage to the structure is...
Hello,
I am trying to design a column bracket that is going to support a runway beam for a bridge crane. The beam is a WF beam with a cap channel. The bracket will be either a WT or a built up T section. My question doesn't really involve designing the bracket per se, but rather the...
Hello,
There is a concrete conduit that has failed with major spalling to the point where there is a hole in the wall. I have traced the source of the problem to poor joint maintenance, and that problem will be rectified in the repair. The question I have is how to ensure or specify a repair...
