Hey Everyone,
Take a look at these two photos and see if you can shed some light on what's going on here.
This is an old building, early 1900s I believe. Existing foundations are multi-wythe brick. Floor construction is concrete slab/beams, hollowed out with hollow terracotta block. See...
Hey everyone, Happy New Year!
I'm looking to design an addition to an existing warehouse. 90ftx350ft. Exterior Walls will be 40' tall Tilt up Precast Concrete. Roof is metal deck on steel bar joists supported by steel joist girders supported by columns. What I'm debating is the interior...
Hey Everyone,
Just looking for some general information about what is industry standard when specifying anchor bolts and base plate connections. I'm typically working on residential/commercial structures, and specifying base plates being set on a 1/4" leveling plate and non-shrink grout...
Hey, I know this has been discussed before for larger-scale structures, but does anyone have any thoughts on using vertical combinations of R Values on town-homes? I have a light framed single family dwelling, 3 stories tall, in SDC D. Long and narrow and simple. I want to use Gyp (R=2) on my...
Hey everyone,
Just wondering, does anyone have typical steel rebar to concrete ratios that they try to adhere to? For example, a flat plate slab that is 12" thick, if your rebar came out to "x" tons and your surface area of concrete came out to "y", you'd have "z" tons/sq ft. Any typical...
Hey,
I was going to post this in the glass section of the site, but it looks like no one's been there since 06/2016, so here i am.
Anyone have any experience with design Tempered Laminated Glass that is 3 lites thick with 2 layers of PVB in-between?
E1300 Section 6.2.5 has it for singly...
Couldn't find anything on this subject, so here i am.
Picture this: High Flat Roof, 200ft long, no parapet. Lower Roof is 10ft lower, also flat, and only 10 ft long. Leeward caused snow drift would accumulate, as well as Windward.
My question: At what high roof - low roof height...
Hey, Hopefully this is an easy one.
I know typically per the BIA Tech Notes that its ok to omit the shelf angle if you have 30ft of masonry supported on the foundation. But what if 30 ft of brick were supported on a steel beam? As long as L/600 is met, do the same requirements apply?
To...
I know this question has been asked several times, but I didn't quite find the answer i was looking for, so I'll have at it one more time.
Existing Tilt up wall, 30ft tall by 20 ft wide panel. Not a Shear Wall. Have original construction drawings. I know where the rebar is located, its in...
Hey Everyone,
Here's a new one.
I have a 16x16 masonry pier. Not a pier block, but (2) 8x16s, with the courses alternated as it goes up. The pier is 10ft tall. The (4) cells each have (2) #5 bars in each cell (probably just thrown in there), and they are fully grouted. No lateral ties...
I understand that no pile driver is perfect, and that's why we typically (in our office) allow a tolerance of about 6" off of the original point where there pile was intended to be located.
My question is , how about 12" off? It's not the end of the world, some induced torsional forces, but...
Hey Guys,
Any thoughts on placing a construction joint in a shear wall? Would you dowel more than normal at the joint?
I have a footing at -3', and the joint is being placed at the slab +3', so theres 6ft between footing and joint. But there's a door at the slab, so less concrete to...
Hey,
I'm trying to get people's opinions on the proper way to call out additional reinforcement required for a two-way slab.
I've seen where its just called out as (11) #7 T (11 #7 bars at the top). The instance would be additional rebar over a column.
But should the EOR show how long...
Yet another Friday morning question...
If you take a steel column (W12x87), 22ft tall and encase it in 24" of concrete, up the entire length of the column, does this change the unbraced length?
I'm leaning towards "No", but just wanted to get some feedback.
Thanks!
Hey All, Happy Friday.
Client is deepening their basement. 2 story building. Adjacent building has a basement. Each building has its own 12" wide foundation wall, but no spread footings, and they are directly next to each other. I'm underpinning my foundation wall, and when all is said and...
Here's a Question...
Say I have a basement, 12 ft tall from slab on grade basement slab to top of plywood sub-floor. Floor construction is 24" deep floor trusses.
One the other side of the basement wall is all fill, and instead of a wood floor system, i have slab on grade at almost the same...
Your thoughts please...
I have a rectangular building, whose length is twice the depth. Along the length on one side of the building, grade is high (10ft above slab) so I have a high foundation wall. Along the opposite side, grade is low, so foundation wall is low. Grade slopes down to the...
I inspected a Brick structure. Old building. (2) wythe thick walls (8" total), 3 storys in the front (32' tall), 2 storys in the rear (21' tall). Its a residential building, row home 16ft wide x 55ft deep, with no adjacent structures to the left or right. Plumb bob has the left side of roof...
I have a reinforced concrete wall being constructed on a pile cap, but due to an adjacent building, i have to move my cap and piles over (see attached image) When i run analysis in RAM concept, im getting a huge downward force on the first row of piles (leftmost), and uplift on the right piles...
