Currently have a repair project where a late 19th century stone buttress took on a car and lost.
I was amazed they still had the original drawings.
There is a plaster crack in the corner on the interior, otherwise no other damage observed on the first floor or in the basement. The...
I have a small 2 level parking garage (1975 vintage) that has a leaking problem (go figure), one level is slab on grade (access via the alley), the other is elevated and accessed via the street. Dimensions are approximately 200'x118' two spans of 24" double tees slope to the center of the...
My firm has been in business for almost 19 years and I'm planning to retire in 11 months. My business partner is not so lucky and will need to keep working for a few years yet. As we are not the same discipline, there is no sense in them "buying me out". As I have read in several other posts...
Before I deliver some bad news to the contractor, I wanted to reach out to the group to see if there were any other options to explore.
The framer took it upon themselves to ignore the drawings and the inspector noticed. Which is good, because there is no longer a continuous load path from the...
Code indicates that wood in "direct contact" with concrete "shall be of a naturally durable wood or preservative-treated wood..."
If a sill seal product was used, the sill is technically not in direct contact with the concrete.
Is the sill seal adequate protection in the eyes of the Code...
Came across this repair while reviewing an existing structure with areas of excessive floor deflection. Several floor trusses have this repair, some have 2 screws per web.
I've only used plywood gussets to repair damaged metal plate connectors. It would seem that this screwed connection would...
A concrete building will experience selective demolition. The lowest floor will remain intact. Aside from being troublesome to cut the existing columns off flush with the remaining concrete slab, can you see drawbacks to this. What if they come back later and rebuild?
I was considering...
Hello from wind ravaged Iowa,
I am starting to get calls to review wind damage in our area. The building I looked at today had some interesting damage. The bottom chord of the open web steel joists was kinked between the rows of bridging. Bottom chords braced at 1/3 points do not like being...
Client has a 60ft span Belfast truss with a 7ft rise. Not a system a lot of people are familiar with, took some digging on my part to identify it. (see attached) The building was built circa 1918. The trusses bear on top of columns with beams supporting shed roof framing on both sides.
About...
Building was constructed in 1882, two-story 12" multi-wythe brick bearing walls. The wood lintels are severely deteriorated and need to be replaced. They are/were comprised of (8) 2x10s.
You can see from the photo that the wood lintel (what's left of it) is continuous under all the bearing...
Renovating an 1870s era building. The beam on the right is severely deflected, more than 4" and needs reinforcement. The roof joists are face nailed to the beam so options are limited to the bottom of the beam. I'm thinking a new steel beam to carry all the load and assume the deflected wood...
I have a situation where the contractor did not install the embed plates in the foundation wall for the connection of the precast concrete wall panels and I am trying to work out a post-installed solution.
The wall panels carry a light lateral load and are not load bearing (there is a...
I have a client who wants to put a large piece of equipment on a 2-way PT elevated slab in a hospital. The only information I have is an X-ray of the floor locating the strands.
Anyone have any ideas on how to proceed with an analysis?
I posted this in the PT forum also.
Thanks.
How do you model a hole in a floor diaphragm for a stair or elevator shaft?
Is this accomplished by merely detaching the joints around the hole from the diaphragm?
Or is it not necessary as there is no framing in the hole to transfer forces?
When analyzing an existing structure for new loads, where the original design was "working stress" with the allowable working stress of the concrete reinforcing steel at 16ksi, how would you convert that to a value that could be used with strength design and factored loads?
Or would the more...
Despite the shop drawings indicating that only select columns could have the anchor bolts epoxied, the contractor left them out of all the pile cap pours, save one.
Unfortunately, with the tension and shear at the base of the columns, epoxy anchors will not work as a "replacement" for the...
I am trying to model a square building (basically a large enclosed gazebo) with hip roof (vaulted ceiling) and a cupola.
The top of the roof structure (at the cupola) has a compression ring (multi-ply LVL) and the bottom of the roof (at the eave) I have another large multi-ply LVL continous...
Project is a wood framed structure in a cold climate. Due to subterrainian constraints and environmental considerations, we cannot excavate a continuous footing to 42" frost depth. Proposed detail is to provide a 12"hx22"w grade beam supported on micropiles (depth to be determined.)
The...
I am currently investigating a project where the gypsum underlayment has cracked. It was installed on the 3rd-floor of an existing 60 year old structure, over a cast-in-place concrete slab & joist system. The thickness is around 3/8" and has been topped with an epoxy coating. Some of the...
I am looking for information on initial deflection of composite precast-prestressed insulated concrete wall panels (in-place deflection due to self-weight.) Much of the research I have done shows an assumed value of 0.5" with no differentiation for various panel heights and no reference to how...
