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Hello, I am looking for help/recommendation on the welding procedure my client has asked me to provide. I do steel detailing and engineering for him. We are working on the project where 3 heavy trusses were designed. Top and bottom chords are W14x311 and diagonal are made of W12x152 and...

Hello everyone, I have a project that I was hired by a contractor to design/check connections for structural and misc. steel. Shop drawings were already submitted and approved as noted but they are asking for connections calcs. Now the contractor has raleased that his detailer left no room for...

Hi everyone, I need to provide shop drawing and design for 2' high "H-Way Rail" in the garage as per attached plan view and other info. This is a garage of a residential building. They call it a H-Way Rail and it will sit on a 6" high by 8" wide curbe. When I realized that I have to apply 6,000...

Hello folks, I am working on shop drawings for a steel contractor. Connections not specified in construction documents are delegated on the contractor as well. It is a vertical and horizontal extension of an existing steel bldg. EOR wants to brace one bay at two floors with HSS bracing - please...

Hello folks, has anyone ever seen a connection as per attached sketch ? This is a middle handrail attached to a steel tread..I don't see how this group of welds can sustain the bending moment of approx. 7.5 k-in ( posts spacing is around 4.5' therefore 50 plf horizontal load governs). Does 2" of...

Hi folks, just want to share with those who might be looking for some connection design software - I am at NASCC Steel Conference in St Louis and I just heard about Giza. I visited their booth and spoke to their representative - the software looks like a piece of pretty powerful tool for very...

Hi everyone, is there anyone who can list in a few points the procedure a steel contractor should follow to get a proper slip-critical connection, including proper bolt tightening and all inspections..? I understand when slip-critical connections shall be specified, Code of Standard Practice is...

Hi folks I have a problem and I would need your help to solve it - Contractor needs to do two openings in a hoist beam at elevator room level to run ropes from the motor - they encroaches onto the machine beam by 4" ( almost half of the flange width, beam is W14x68, 9' long).See attached sketch...

Hello folks, I know there are existing threads about this topic but I couldn't find anything that would answer my concern. We are doing a new 9-story building in place of existing 2story at 25'x100' lot. There is an adjacent 3story building, +70 years old minimum probably. My question is if I...

Hello guys, I have a question regarding cupola structure that I work on right now. It's a wood structure with two steel beams (compression and tension ring beams). Please see attached two diagrams, axial force and bending moments. The model is simplified for calculations' sake. Horizontal...

Guys, I would like to hear your opinion about the attached connection. This detail applies where column's section is changed from HSS 10x5x1/2 to W12x58..I believe EOR's intention was to create a moment frame above the floor where this detail applies that's why he changed the column size so...

Hello folks, please see attached sketch of proposed bracing. In a nutshell, my company is taking over the project that was done by other engineer. I already checked the structure of a new building but there is still bracing to be prepared by us. The attached sketch is what previous engineer...

Hello everybody, Can someone tell me how does the inspection of slip-critical joints look like? My understanding is, according to AISC, that "faying surfaces shall be verified that they meet the requirements as specified in the contract documents prior to assembly of the joint.." I am gonna...

Can anyone recommend any good book about shear wall systems and its analysis..? Thanks in advance!

Hi folks, has any of you ever done a stair opening roughly 9'x7' in exist. RC building just next to the column? It's a 20-story residential building, two ways 8" flat slab - column structure. The client wants to create a duplex. It's at 10th floor. The opening would have to be located a few...

Folks, there is an opening to be done in multistory residential RC building. Please see attached sketch. The opening is a stair opening to connect two apt. to create a duplex. It's a multistory residential building, 60-70 years old... As per sketch, the opening is considered close to RC column...

Hi, A new one story addition (penthouse and elevator extension) is proposed over the top of 4-story building. Do any of you know where I can find any restrictions on erecting steel over a building that is occupied during the day ? One of GCs said 2 floors below shall be empty by code or heavy...

Hello folks, does anyone know how to make an alternative moment connection for this beam ? (see attached picture). The splice has been done as per structural drawings but contractor did not call for the inspection during welding. Now the EOR doesn't want to sign the job off. My boss PE...

Hello folks, I've received a project where I was asked by the contractor for steel shop drawings and connections design (EOR requires signed and sealed calculations and SD). Please see attached framing plan. It's a 6-story building, first floor is commercial and residential floors are above. I...

Hello folks, Please see attached pdf. We were hired by contractor to prepare sign and sealed shoring design/drawings as per EOR request. Exterior brick wall and concrete foundation wall are to be replaced. It is a 4 story building with basement, concrete foundation wall, exterior brick wall is...