I am currently waiting on the original fabricator of a building to send me information on the installed OWSJ in a building. The current occupant is looking to add a 700 lb RTU between two joists. Additional snow drift surcharge can be ignored by my local code for a unit this size. Whats the best...
One issue with your earlier weight increase calculation KootK, is the dead weight of these distribution beams. A 15" C-channel will be about 34 plf per side and a 2 ply 18" LVL will be 18 plf per side. With 8 foot beams, you would be adding 161 lb (9% increase) to each bearing point and with the...
No, there's not much for a bearing seat at all.
So it looks like to determine whether the distribution beam is stiff enough, I would use the following equation:
β=∜((K∕S)∕(4EI))
Where,
K = The stiffness of the joist, kips/inch
S = The spacing of the joists
E = The modulus of elasticity for...
I will look into applying a transverse point load on these trusses.
So to create the RTU support, would you just turn the unit so it fits between 3 joist spaces and span those 4 joists with something like 2-ply 2x6s on both sides of the unit, spanning between the 4 trusses?
Span of the truss is about 37 feet. They currently have the RTU positioned near midspan, but they are open to placing it near the end bearing at the steel beam side. The spacing is 32" o/c and the depth is 30"
There is one large duct running through the trusses near the support (the support opposite the masonry wall is a steel beam). The only other obstructions to contend with are the continuous bottom chord bracing that runs inside the trusses. When you say you should sheath all the truss, would you...
This is a fairly small unit, the weight is only ~1000 lbs. The longest horizontal dimension of the unit is also only 2.3 meters, so according to 4.1.6.7 (3) of the NBCC, drift surcharge need not be considered.
A client is placing a new RTU on two existing composite trusses. The trusses are in the style of the Redbuilt "Red-L" trusses, with wood top and bottom chords and steel webs. The building is from the 50's or 60's, so I believe the trusses were likely manufactured by Weyerhauser before they sold...
I'm being asked if the concrete capitals below the teleposts shown in the picture attached can be removed. What is the purpose of these? I have no information on the footing below. The house is from the 50's or 60's.
The National Building Code of Canada has something similar: "Holes drilled in roof, floor or ceiling framing members shall be not larger than one-quarter the depth of the member and shall be located not less than 50 mm from the edges, unless the depth of the member is increased by the size of...
Just wondering how others look at situations like this attached picture. .
The electrician notched two holes, for some reason, a few inches from the end of the floor joists span. These are 2x8 joists spanning about 11'6". Would you take the net section remaining above and below the holes to...
I'm wondering if there are any ethical issues in this situation:
A newly poured foundation settled and caused cracking in a house foundation wall. The builder was working with another engineer, who would have checked the soil bearing capacity of the site. That engineer proposed a fix for the...
From what I've seen in installation manuals for ICF walls, they call up 2 additional vertical 15M rebar at all point loads on the wall. It was discovered at a house we are looking at that this additional reinforcement wasn't installed. I'm wondering if it would be a good idea to add additional...
We typically specify a monolithic pour for a slab on grade with a thickened edge, but we have a contractor requesting to construct it in two pours, with the slab resting on the footing. This is for a small garage. I don't see any issues with doing it this way, and it may in fact be better for...
