Thanks for the feed back.
The wall is an 8 foot high 10 inch non reinforced concrete wall on a strip footing for a two story residence.
The structural engineer for the home owner is stating that the wall will now without the horizontal reinforcing, require steel perimeter plates bolted to the...
Table R4041.2(1) is new to code and requires one #4 bar top and middle of 8 ft high concrete basement walls.
I am reviewing a homeowners claim against the builder that this was not done for his new home construction. Does anyone have a theory on what this reinforcing does for the wall? It is...
That is my exactly my feeling however I am asked this question repeatedly and wondering if anyone has had positive experience. It's one of those risk vs reward issues.... high risk for small $$ reward. All of these spaces are occupied by various condo uses which equals big liability.
Thanks...
Has anyone had experience with using Hycrete as the only waterproofing component of a wall and slab several feet below the water table? Did it perform? Do you know the cost difference? Any other problems?
A MEDIUM SIZE BALCONY @ 60 PSF LL IS ABOUT 2-3K WITH DL, PULLING AGAINST NOT A 2X6 STUD WITH A COUPLE OF 8d END NAILS, NEEDS THROUGH BOLTS LVL POSTS AND BACKER PLATES
Balconies are aluminum both julliene and full size. They attach by a ledger at the building and steel rods back up to the framing.
I was curious if anyone has dealt with these companies. The show an an attachment plate with a couple of holes in it and the rest I believe is going to fall back to...
Does anyone have experience with these companies. The architect wants to use prefab. aluminum cable and ledger supported.These are going on all sides of a 5 story wood framed condo. My main concern is connection to wood framing. Typically this is going to come back to me. Connecting steel to...
we have a new building a story high than adjacent. Architect wants me to design a sloped roof in the shape of the drift on the existing roof to eliminate snow drift.
I have always believed this was not a real solution, but others have gotten away with it. I believe the drift still exists and...
The IRC residential building code has a prescriptive design (without holddowns) based on lengths of full height sheathing. I have used a table on the drawings showning required and actural lengths for each walls and story, referencing the table.
If that doesnt work hold-downs are required on...
I have several column base plates on a five story building that were slotted in the field to hit misaligned anchor bolts. the columns are on grouted leveling plates. Holes are inward from face of concrete pier by about 1 inch on all four bolts.
Steel fabricator want to weld plates over hole...
I am designing a 4 story wood apartment building with some LVL posts with loads approaching 20K.
I have asked that all posts be on continuous LVL material, ie no interuption from plates or plywood flooring. The wall panel supplier has questioned this. Am I being unreasonable or is crushing a...
Over the years, I have been called in to investigate concrete slabs on composite metal deck. In all cases, a couple of years after construction, the concrete has cracked with a series of very load noises, startling the occupants. Some of these slabs have also had top reinforcing added over...
Someone (slideruleeara?) recently posted a link to old Kidder-Parker handbooks They have info on clay tile.
There is a clay tile handbook printed in the 50's that would be helpful if you can find one.
good luck.
There definitely is a moral here somewhere.
Our aspiring bridge designer is obviously an intelligent and motivated engineer wanting to learn. But unfortunaltely bridge building is not like say gardening.
There are many reason why I don't do electrical engineering, although I had courses in...
Yes, the blast depends on the LEL, or lower explosive limit of the material stored. Look in the appendix for an area calculation using hydrogen or a similar gas with a very low ratio of gas to air. This would be a worst case scenario.
The need for venting depends on how much of what class of...
I have done a few of these. I believe NFPA has an example in their deflagration venting section ( I don't think it is 911) I have always use 100 psf for resisting panels and 20 psf for relieving. The expample uses hydrogen, I believe, which is about the lowest flash point you can have. the...
I may be overthinking this, but I question the Clients intent. Why did they go to you, the local specialized firm for design criteria only?
Is it to get your expertice for less fee and then hire a firm better connected (and controlled) with the Architect or the Client?
I would try very hard to...
When I look at your proposed sketches, I see alot of hinges.
The approach I am familiar with is adding a new horizontal beam under the cut column connecting between an old column and the new.
Your approach may work, but I would be suprised if the existing horizontal members would be strong...
I have been involved with data centers over the last 30 years or so. The last one I was involved with really suprised me. I was told that as technology increased the centers would become smaller because equipment would be smaller. What I didn't expect was that the data center would stay the same...
