Here is the big question: In a multi-story reinforced concrete building, do shores need to be released and "snugged up" before shoring levels above? This is what makes sense to me. This allows the beams to deflect and "carry their on load".
Let's begin with what most of us agree on...
I have used this detail as a mechanism to transfer shear from a roof diaphragm to shear walls. Most contractors tell me that they have never done this. They state that they have never seen this detail. Even when I thumb through "typical wood framing details" found in published literature, I...
Pound for pound, I know that tube steel (hss) is generally more expensive than w-flange shapes. I just don't know how much. Does anyone have any information on this? Thanks in advance.
Does anyone know of a code reference that prohibits cross grain bending as a load transfer mechanism? I have read numerous articles that state things such as "wood is weak in cross grain bending" or "this would create cross grain bending". Is there no value for cross grain bending? I know...
For a porch roof (all is open), is it appropriate to apply overhang values for design of the rafters/ trusses and connections? If not, what would be appropriate? I believe that we would need to account for positive pressure on the underside of the roof (or porch ceiling) and negative pressure...
I know the ACI 318 states that concrete shall have a minimum f'c of 2500 psi. I have a situation where 28 day, 56 day, and even some cored breaks have come in lower (around 2000 psi). Keep in mind that all concrete is for shallow foundations, no vertical elements. I have checked shear and...
Does anyone know how much a typical carpet and carpet pad weighs? This is going in a multi story apartment building. I have looked on the internet, but I'm not getting the right "weight". Is 5 psf too high? Thanks in advance.
Does anyone know reinforcing requirements for column capitals or dropped panels? I am assuming that the minimum reinforcing for columns would also apply here. Thanks in advance for any help. Robert
I have a question concerning framing terminology. I believe, but need verification that "timber framing" refers to heavy TIMBER (members at least 5"x5" per NDS) framing and wood framing refers to traditional "2x" framing. I don't dnow why, but when I here 2x wood called out as timber and these...
This might be more of an "aesthetics" question. Anyway, I've designed a few heavy timber trusses. The species of truss members are currently #1 SYP. Structurally, everthing is fine. I am now beginning to wonder if this species is the most suitable for strength AND aesthetics. It seems...
I have a PT slab over a parking level. Half is in heated space while the other half is exposed. I really would like to avoid expansion joints. What other options besides typical T & S reinforcing would help prevent temperature and shrinkage cracking (due to differential temp. changes)? Any...
Can anyone verify the dimensional requirements for drop panels. I believe the code reads that the distance from the edge of the column to edge of the drop panel = thickness of drop panel (additional) x 4. I have a 12x24 column, 12" PT slab and 10" drop panel. If these dimensional requirements...
In sizing brick lintels, I have only been considering bending in the vertical leg (the "x-axis"). I started thinking and asked myself this question: At what point do I start considering torsional effects (or bending about the "z-axis") due to the eccentric loading of the brick? Is this a...
I have designed a single story steel frame structure with metal stud infill. I used threaded rod cross bracing to resist lateral loads. The contractor comes back and request that we use shearwall system. I'm having trouble getting the lateral load from the diaphragm (metal deck) into the...
