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Hello, I have encountered this atypical hairpin detail for anchoring pre-engineered metal building frames... I just wanted to get your thoughts on this, if this would be effective at all? The hairpin will be cast in the slab, but it's wrapped around another U-bar that is anchored into the...

Hello, Does the triple span condition in any steel deck catalogue consider patterned loading for the 3 spans or is it typically just uniform distribution? Thank you.

Hello, Would anyone have a catalogue of Westeel-Rosco Steel Roof deck from the 70's or 80's?' I tried contacting SDI but they don't have it. Thank you.

Hello, I am designing a reinforced concrete beam composite with a slab poured separately as shown below. I understand this will require shear interface reinforcement for shear friction to resist horizontal slip. My questions are as follows: 1. Are the horizontal shear reinforcements (in the...

Hello, I'm looking for reference on lateral shear capacity & uplift capacity of the "Broomed" strand connection to cast-in-place cap shown below without embedment for precast prestressed piles. Any help would be appreciated. Thank you.

Yes it is under a grouted baseplate. My concern is that if the bonded concrete breaks near the top, then the connection is compromised for shear transfer even if no one sees it. Thank you for your input. SwinnyGG, for anchor design, we typically use the nut at the bottom of the anchor to...

Hello, A contractor wanted to use fully threaded anchor rods instead of threaded ends only as shown below. I have no concerns regarding the strength & net area of the threaded rod, but I'm not sure about the concrete bonding to the threaded portion. Is it possible that the bonded concrete in...

Thanks. I will look into those works. There is no topping layer. The chords are precast girders on two sides of the building and 30M bars cast inside the hollowcore along the other two sides. I'm not sure where to get the shear stiffness of grouted key joints...maybe they are in those references...

Hello. I'm looking for a design guide on how to calculate hollowcore diaphragm defleciton assuming it is flexible and simply supported. I can't seem to find any guide in the PCI manual about this topic. Thank you.

I was wondering if anyone has a copy of hollowcore span tables from Con-Force Products in the 1980s? I'm working on a precast building with hollowcore roof slabs supported by precast beams. The originals drawings I received were missing the pages I need to determine the structural capacity of...

For your first question: I would say no. If you are checking the capacity of the built-up section as a whole, the lateral brace near the middle of the built-up section is not going to provide sufficient restraint on the compression flange of the built-up section (i.e. the flange of the WT), but...

Hello, I'm a structural engineer designing a support frame for an evaporative condenser by Imeco which I believe got acquired by York International which then got acquired by Johnson Controls. I needed to figure out the weight of the unit but I couldn't find any information online and the...

Does the shear capacity of a wood to wood connection using wood screws get affected by which way the head of the screw is drilled from? I'm reinforcing the ends of an existing wood joists with a new LVL ply, and I was wondering if it mattered which way the screw is drilled from. It would be...

I have a situation where I have an overhead door jamb right adjacent the free edge of the concrete at a door buck location. Can anyone provide me a reference on how to calculate concrete bearing capacity adjacent the free edge where the failure plane is shearing towards the free edge as shown...

Thanks for the response jayrod12. I don't know if you recall but you were the one who provided me the catalogues...much appreciated. I have the OWSJ modelled in a structural analysis software, and I find the members (chords and webs) are structurally adequate based on the geometric and...

I do have the truss catalogue supplied by an Eng-Tips member. It's from Dominion Bridge Company (of Canada), but the load tables in the catalogue doesn't indicate which is the critical structural element that would require reinforcing if the load tables are exceeded.

I wanted to check the connection strength of an existing OWSJ with resistance welded web to chord connection as shown below. Can anyone provide a reference (preferably Canadian Code) of how to calculate the strength of the connection? Would the fused area be the only variable here? It seems...

Jayrod12, Would you happen to have additional information about the Type H open web joist from Dominion Bridge from 1965? I couldn't find the spacing of the panel points in the document you provided to compare with as-built measurements. I just learned that there was an adjacent roof added...

I figured some members here were awesome Manitobans. [bigsmile]

I think that's the one I need. I can match the bottom chord size but I didn't realize the top chord is different than the bottom chord...I'll have to confirm the top chord size when I get back on site. Thanks a lot jayrod12!