Using Elastizell behind some retaining walls. Anyone ever use it? How do you handle surcharge behind the wall, do you assume that it would end up on the wall via the cellular concrete?
Got beam attaching to an existing column and needs to be a moment connection. They didnt pre-drill holes for future, so going will welded.
My first thought is a angle for setting the beam welded to existing, and they set the beam and bolt for temporarily. Come back and weld angle to new beam...
Question on naming cold formed steel.
Should I be using the SSMA nomenclature, or AISI, or can I use both?
Designing with Software, it lets me pick AISI, SSMA, Dietrich, or Dale Incor.
What is the "generic spec" I should use?
How much specification wise do you folks show on the drawings? Do you have a min requirement for back filling behind walls, around footings, under slabs, etc?
Min compaction requirements? Moisture content? lift heights?
Or is it better to leave that to the geotech report i.e. "All soil back...
IBC really has nothing on decks. For a multi story deck, is the preference to use full height column, and secure the ledger beam to the column, or notch the column? 4' x 8' decks up an apartment building.
Would an existing wall footing (or really the soils) have additional capacity after 35 years from consolidation? I have a wall footing I want to add some load to. Current design pressure is 2000 allowable bearing. Its maybe got 900lbs/ft currently (including footing weight).
I want to dowel...
Looking at options for bracing ZS purlins, and came up with strap bracing over bolted or welded angles, etc.
Anyone ever done this? Would it make sense to call it out continuous, i.e. they just weave it in and out each space? Then lap at a joint as needed?
Thanks
Anyone have advice on Zee roof purlin fixity. I see usually they are designed as a fixed connection. I have read 10-20% lap is adequate. 20% would be 5'-0" which seems reasonable but also not.
I was thinking 2'-0" each side. 2 bolts each end, then clip at the beam w/ 2 or 4 more bolts.
Thoughts?
Got a 14 bay @ 25' building additon x 1 bay at 65'-0". Any advantage to where to put the X bracing along the long length? It has 1.5" B deck on the roof. I was thinking first and last bays. Any better places, door and window permitting?
So got truss reactions as a lump sum, i.e. not broken into DL, LL, WL, etc.
Is it worth figuring out the components, or just design for the total reaction using ASD?
I asked for the component reactions, but got no reply.
Thanks
Going thru a wall girt design for a steel building. Looking at C girts. Looking at table I6.2.1-1 for a 9" girt, looks like I have to use a 0.40 reduction? That seems drastic, what am I missing.
Outside wall will be metal panels.
Got a moment frame, and its for a fabricator building an addition. They were asking why I was doing a end plate moment connection over having the beam on top of the column.
I have not designed the connection yet, but in my mind, the end plate welded on the beam (W27) is better for strength than...
Im working on a project where they are adding on a bay (65'-0") to an existing structure that is 190' +/- wide already. They are moment frames (not a metal building) but WF columns and beams.
Would it be best to do a simple beam connection at the existing, and let that frame take the load, or...
What would you call this white stuff on the walls? Some sort of mold? Also, what causes a spall like this, just a bad outer coating?
Its a basement with water issues (standing water on floor). Seems they but a parge coat over the wall, now chipping off. Im thinking its a stone foundation they...
So a resident had a local basement wall company do a inspection, and engineering for a repair. The engineer that stamped it didnt come out, just went of the company rep that looked at it. They got drawings, got a permit, but their mortgage company wont sign off unless a engineer does a...
Im doing some practice modeling a framed building in Risa. For now, I have moment frames each direction. When I just run the self weight model, it gives me wacky results. Im using pin pin at the base.
How do I get "Releases" so I dont end up with the phantom results, and suggestions?
Got a building department saying slab insulation does not provide required R value. Current detail has insulation edge of wall, tapered to a point at the slab top.
New detail is something like this. I dont like it at all (focus on the insulation mainly)
What details are you folks using?
Anyone know what a "pole barn spike" is? Got a 200'x75' pole barn, and the headers each side of the column are fastened with 4" pole barn spikes (no quantity given) and 5-5/16" structural screws.
I doubt thats going to work for a 75' span, but would like to see how many "spikes" it would need.
When retrofitting and adding a steel beam to a residence, it seems to be basic practice to use an adjustable column (threaded end). I was looking at this product https://tigerbrandjackpost.com/floor-jacks/
These seem a temporary or secondary support.
What have folks used in the past?
I need...
