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  1. Enable

    Fastening through lead sheets (3 - 1/8" sheets on steel studs)

    Have a hospital that requires three (3) 1/8" lead sheets for radiation protection. They sit on a concrete slab and are otherwise fastened to steel stud walls behind to prevent them from falling over (sheets are 6-7' high). Details of radiation protection are by the specialist and I just need to...
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    Fancy Door Bulkhead Attachment to Structural Steel Lintel

    I have a long fancy door that weighs roughly 1000lbs (total weight over 23 linear feet) that will be hung from my structural steel lintel (HSS 12"x8"x1/2"). I'm the steel subtrade / delegated designer but as a favor to the GC I am designing the bulkhead attachment for the window contractor since...
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    Concrete Formwork Shoring Through Existing Wood Flooring

    Project Background I'm shoring for concrete slab construction within the heritage component of a larger build. Existing interior floors are all suspended wood joists simply supported on W310 (W12) steel beams at 10-11ft centers. Façade stays but they are demoing a few of the existing suspended...
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    Steel moment frame retrofit for school

    This is an extension of this thread where I was called in to see if we could fast-track some lintels above the windows. Obviously that did not occur and we are now fashioning a system to remove the glass block in its entirety and in-fill with CFS. Framing System of Work Area 0. Single story...
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    Existing glass block above window - need fast lintel ideas

    Here's the situation: the contractor was commissioned by the schoolboard direct to re&re windows on the ground floor. At present windows have been fabricated and they have started to install them. When they began to remove the existing windows they found that there was glass block above (hidden...
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    Shoring 18 Story Building Loads at Ground Floor Level - Steel Shear Collar Design

    So here's the situation. P1 slab is being fully replaced in an underground parking garage. The slab abuts a 300mm x 600mm corner building column. This column is significantly deteriorated at its base and once the removal of the P1 slab occurs it is likely much of that column will come with it...
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    OWSJ Strengthening due to Mechanical Openings - Contractor vs EOR's responsibility

    I've bidding a job where there are a number of additional roof penetrations due to mechanical upgrades (grocery store re-arranging things). The EOR provides a typical trimming schedule for the new openings and per usual has us doing the connection design for all structural steel on the project...
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    Cold Formed Roof Trusses - Perimeter Details

    This is a continuation of my previous thread on stairwell enclosures. The EOR has blessed the use of CFS trusses, but unfortunately the construction is to the point where the walls will remain double-wythe solid brick. I'm sure the details I am going to inquire about must be standard fare, but I...
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    Stairwell Enclosure Ideas - Cold Formed Roof Trusses?

    I'm pricing a job as a metal subtrade for a GC, and they already have a design for the roof structure. My problem is the so-called design is A) lacking so many details that as a CWB Division 1 certified shop I ethically need to pretty much redesign it myself to be comfortable, and B) where the...
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    Using Aluma Beams in Reverse

    I have a vertical formwork design where I would like to use aluma beam whalers, and for constructability reasons I would like to invert the beam. That is, large side on loading member and small nailing edge on support. The literature on the beams doesn’t give anything on this and I haven’t been...
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    Soliciting Business in a Small Town

    My affairs are such that I can perform most of my engineering duties due North of my business and have set about doing just that. I’ve moved (or rather in the process thereof) to a town of about 300 people and the closest “major center” is about 30 mins away where about 5000 canucks reside. I...
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    Soffit Repair in Continuous Drop Panel

    Wondering what everyone's thoughts are on soffit repair in drop panels? I was recently engaged to design shoring for a repair project, not mine, where there was a bunch of soffit repair in drop panel locations. And for some reason I feel a bit uneasy about the ultimate repair (not the shoring)...
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    Existing CMU reinforcement analysis and questions

    This is a carry-over thread from the Moment Frame forum where a few of us have been having some fun with a project that might progress ahead depending on what we discover here. I’ll refer you to that thread for a detailed background but the Coles Notes are these: We have an existing private...
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    Modifying End Wall of Existing Private Residence

    I am looking at an existing two-story residence in a low seismic area where the owner has previously added a CMU enclosed addition with a wood / window end wall (see pictures). But now wants to remove the end wall and place a full height curtain wall in its stead. My concerns are A) Lateral...
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    Structural Steel Bolted Connection Repair (occupied building)

    I have an interesting one to look at. Existing three story building corner where steel lintels that pickup the brick façade, CMU backup wall, and OWSJ + floor loads from the interior (and roof) have corroded about 50% of the way through at the connection. As far as I am aware shoring is in-place...
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    Analyzing Existing Steel Structure

    I’ve been asked to furnish a proposal for analyzing capacity of an existing mezzanine supported by a simple steel structure (HSS truss joists/girders, HSS columns, corrugated decking, etc) in an industrial unit. I primarily repair existing structures, but I don’t much analyze them for others /...
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    New Weld Engineer - Gift Ideas

    Title says it all. My brother is a newly minted weld engineer and it's something he has been working towards for some time. I wanted to get him something to commemorate the occasion but do not have any great ideas. He enjoys random things that have connection to some event in time. So, for...

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