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We have an industrial client that is looking to build a warehouse structure to house different hazardous (flammable/combustible) liquids shipped from overseas that will be either resold or down-packed and resold. Currently we are investigating the feasiblity of the project and have run into a...

I have been designing a braced frame connection using AISC's Design Guide 29 and have a decent grasp on the designing the various elements of the connection, but the particular detail I am working with has a HSS column (5x5x1/2) member. I have scoured the message boards and papers/design guides...

I have been asked to take a look at certifying that a building built under the IBC2000 building code will qualify as a Benchmark Building as indicated in ASCE 31 Table 1-1. The building is a 1-story load bearing light gage metal stud wall building with diagonal strap braces for shear resistance...

I am working on a school project and have a 3 hour firewall (CMU) that I cannot use as load bearing. I have provided steel columns inside of the wall to support joist girders that support steel joists. In the attached image, the higher red walls parallel to the joists are the 3 hour firewalls...

I have seen various details for the connection of an elevated slab to a CMU load bearing wall. Some details show a connection of a "pour stop" steel angle bolted directly to the wall while others show a steel angle welded to the top of joists and an expansion joint at the wall. When do you...

Thank you guys for your responses. Both very helpful. I agree that a post installed anchor is a quick and easy solution to use when loads are relatively small. In this particular case, I am anchoring a shear wall holddown for flat strapped x-braced shearwalls on top of a CMU foundation...

Following the ACI 530 section 2.1.4 or the corresponding LRFD section, the design of anchorage to resist tension and shear can be designed. It appears that one of the (2) equations for each direction of load resistance (tension and shear) take into account the masonry construction, while the...

Thanks for the responses, I do have a followup question though. Does the type of firewall make a difference. For example, can a 1-hour firewall be penetrated, but not a 3-hour?

Is it permissible to have a one-hour interior firewall that has penetrations for a deep span steel joist framing past the wall on either side? I have a 67'-6" span out to out of masonry exterior walls and an interior 1-hour firewall parallel to the exterior walls offset in about 10'-0" ea. side...

I am working on designing a post installed anchorage design for a new glass railing system in an existing building. I have been looking at both Simpson Strong tie anchors and Hilti anchors (adhesives, mechanical...). My question is in regards to the seismic and cracked concrete provisions of ACI...

Thanks DVWE

I am looking at welding a steel bar to a flat plate. I know that I need to use a flare bevel groove weld and I see in the AISC code and AWS D1.1 what the "effective weld size" should be. In my case I have a 1-3/8" bar and a 3/8" thick plate. So following the AISC, I should have a 5/16*R...

What ratio of steel do you place at the top? same as bottom? 0.0018bh?... After posting I read in the RISAfoundation manual that their program will use a top layer when the footing goes into "partial uplift" designed for the negative moment induced by the uplift action. It seems to me that...

What is the top layer of steel for in a reinforced concrete spread footing? I have seen multiple structural designs where some engineers specify a layer of steel at top and bottom of footings and others where engineers only specify the bottom of the footing. The only two reasons I see it...

I am investigating implementing a more formal quality assurance program for my structural engineering firm and I am curious if anyone would be willing to share samples of their policy/procedure manual, design standards, or knowledge base currently used. More specifically looking for any...

Thank you for all of your posts, this has definitely been helpful as I attempt to think thru this issue. Quick summary of the last few posts: It is permissible to resell an engineered product, but not an engineering service. Followup Question: What constitutes an engineered product vs. an...

Scenario 1: Can Company A (licensed engineering firm) provide engineering services for Company B (not engineering or architectural firm) who combines engineering services and building materials into package to resell to a customer? Basically can Company B broker engineering services? Scenario...