I have found that top steel significantly helps in controlling Long Term Deflection of concrete beams, especially when the beam in question is relatively shallow. Also helps when the design fee is pretty tight...
With the restraint detail of the top flange. My detail would be similar to KootK's, difference being;
I would have a timber trimmer bolted to the top flange at regular centers,sheathing is attached directly to this trimmer and any joist blocking is carried into the steel beam web and secured to...
Just a general question (addressed to OP or anyone willing to comment). How are expansive clay soils handled in your neck of the woods?
With shallow spread footings, do you excavate to below the soil suction depth (based on climate and soil profile), found/build your footing and back fill...
Why don't you provide intermediate blocking between the studs (size equal to the lighter of stud/top plate)... fabricator will quickly see the benefit of studs at 24"
If this a fascia beam I think 10mm is getting up there for when considering a deflection for a line of sight perpendicular to the beam span. Also, what is the deflection & rotation happening from the fascia from the 2-M16 bolts, are they tensioned to friction grip or just snug? Have them...
Dear Mr DIY-Hobby builder. Retrofit all trusses with the following continuous Steel-C channel [..xxx..] bolted to the existing top-chord with [..xxx..] etc etc...
Seriously, if you take on a job like this on I hope you get an upfront fee and produce a bulletproof detail & specification...
Definitely provide a wind beam over the stair well. Aesthetically I think the balloon frame wall is a lot less rigid, if constructed the occupant can feel the difference between his stair well framing and the nominal wall framing. Not to mention, you have more relative movement between the...
This is up there, but not as high as Chinese manufactured I-beams welded with a silicon fillet both sides (painted silver to match). There was a thread back a few weeks about the use of leveling nuts on the underside of the baseplate and no grout (used for power stations ???), so in some...
Are you on the design team to design a stadium with architects and engineers on board? It seems that there would be some pretty important visual requirements... Its just too hard to tell what you should or should not do, column design as an element is the easy part just "Check axial...
I agree with Hokie, was about to suggest if your client wants spaghetti girts, he will need at least a Z300 or Z350 double span girts overlapped at each support
Bottom flange is restrained, it cannot twist without pulling out the timber joists. It sometimes may be more economical and less of a hassle to increase the size of the UB to avoid the fly braces. Just ensure the infill framer is full height (I imagine if the infill is not touching the bottom...
You can try to design some cantilever reinforced masonry piers every 2.0-4.0m to provide your lateral stability. Then the rest of the wall can span horizontal between the peirs
Agree. This should be a straight forward cantilever with backspan. So Cantilever the short direction (over the green column) with a back span, then all is required is a simple connection to the other (longer) beam. Hide in roof space or wall frame to suit.
It seems to me you need to cross brace the roof back the end walls and then provide cross bracing in the end walls to provide lateral support to the structure. I don't see how you can have a meaningful moment transfer onto flexible columns. Alternatively add the required knee braces if it does...
shahg213, haven't you asked this question before on the 9th of December - "Moment Connection with SHS Column" thread507-400452 (having Deja-vu). The general consensus was better connection details exist and a few were even shown to you. An online form is not the place to have other engineers...
I like to think anything is possible ;) But should it be done?
When we tried to design a system of OWSJ trusses for a local fabricator, the cost of bolting or welding C-sections to form the truss was more expensive than the cost of the C-sections used!
Without seeing the final engineering...
That's 60 truss's that need to be welded up and a hell of a lot of connections... how are the purlin's connected, direct fix or via welded cleat? This structure would not be economical in my practicing area (Australia).
I design these kind of structures as "light guage" C sections portal/sway...
Is your pool cast with forms or will it be sprayed concrete? I have generally found corner reinforcement requirements are equal to the horizontal reinforcement (it is a residential swimming pool right?) and you are not designing a reservoir or a water tight cellar. I have not seen any beams...
What happens if your remove roof members depends if the roof is coupled (has ties from rafter to rafter)or non-coupled.
From what you have said the roof is coupled and thus forms an A frame, once you cut these ties the roof become a non-coupled room and the ridge beam WILL take the load. If...
..... This is a bit of a over complicated thread. Pick up the phone and have a chat to Hardie's is unsure about materials or their fixing.
Hardie's recommendation comes from the fact they specify a 20mm Buildex FibreTek screw for steel up to 0.75mm BMT and a 8g-32mm HardieDrive for steel...
