Thank you all for your suggestions. This discrepancy between Part 4 and Part 9 raises all sorts of questions for me. For example if a beam is sized for part 9 but i have a doorway opening above it that creates two small point loads is that beam supposed to be sized as Part 4 now that its no...
wow, just like that.
Skeletron big thanks for providing the commentary on this. I assume this likely applies to all the tables in Part 9 ?
I have an architect that sized everything with Part 9 but now needs me to examine one steel beam because of a point load. am i to tell him to resize all...
The code should consider deflection as well since as you guys mention there are serviceable issues especially in houses where you have drywall so I’m sure it’s taken into account. it is mentioned in Part 4 of the code. I wonder if there is a reduction factor for deflection oflaterally supported...
Hi Guys,
Just wondered if any of you can shed some light on the steel beam tables provided in Part 9 of the Ontario Building Code.
I'll take a simple example:
According to the table a W8x18 steel beam with a 19'6" tributary width should be able to span 19'.
Beam is assumed to be laterally...
do you think the ridge board would act structurally here ? Assuming the valleys can take the thrust of the rafters I was thinking the ridge board would act any different then in a typical gable roof.
Hi Guys,
wanted to run something by you. I'm working on a garage where the client wants to vaulted the attic space for storage.
He doesn't want any intermediate posts to maximize storage space.
The attic floor is the garage ceiling with joists bracing the exterior walls. I have attached my...
sorry about the messy sketch. I've had a situation where a municipality is asking for minimum nailing requirements for various point load situations on some floor layouts. I'm looking to create a formula for the different scenarios based on fastener capacity.
Thanks again.
Hello All,
Wanted to get some direction for point loads on a 2 ply LVL beam for different loading scenarios.
Scenario 1: face mounted point load (point load from attached beam on joist hanger)
Scenario 2: top mounted point load (point load from column above)
Assuming the same member...
Hi All,
What are your thoughts about lowering the basement slab so that the middle height of the 3" slab is flush with the underside of the footing as per the below sketch. The client wants to add a few inches in height to the basement but does not want to underpin the footings. I've never...
Good Morning Everyone,
Hope you all had a good weekend.
Have an issue on a jobsite where for whatever reason the floor manufacturer has produced joists that are too short. To reorder new joists would require an extensive amount of rework, so I was wondering if the below is an acceptable...
Good Morning.
I had a contractor reach out to me about building a second floor addition on top of the first. However, he would like to leave the existing attic joists as is to avoid removing drywall on the floor below.
I've attached a sketch of what he proposes. My question is does adding an...
The hip would connect to a ridge beam. At the connection there would be a support. I was planning to sister new rafters and then put a hip beam under each hip ? If I do that do I still need to worry about lateral support at the exterior walls. Or would this be no different now from a ridge...
Hello Everyone,
I am working on a project where a client wants to convert a section of a house to a cathedral ceiling. Right now its a square hip roof with ceiling joists. The ceiling joists would be removed. As well the roof has intermediate beams to support the 2x6 rafters since some of...
Good Morning Everyone,
I have been requested to look at a newly built house that has recently had a brick veneer installed. The Builder contacted me to review a continuous vertical crack as you can see from the pictures.
I was wondering what your thoughts are in the cause of this crack (thermal...
Good Day Everyone. Hope you all had a good weekend.
Last week i visited a client that was complaining about a warped beam. When i got there, I saw two large cedar beams where one was really warped especially at the ends. Never seen anything like it for that kind of beam size. Of course the...
Thank you for all your suggestions.
Apparently, occasionally inspectors here in the Toronto area let some contractors get away with doing this and this electrician thought it was ok! He thought by code you were not allowed to secure the wiring above the truss.
I addition to what Kootk...
Greetings to all,
An architect called me with an issue at one of the projects he's managing. Apparently the electrician drilled a 1" dia hole through the bottom chord of the trusses. The bottom chord is a 2x4 (1.5" x 3.5"). The truss manufacturer does not want to evaluate this, as their...
