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I am working on a 24 year old three-storey multi-dwelling residential repair project where I have found wood rot in the exterior walls at the basement knee wall and ground floor. The second and third floor walls are in good condition. The building consists of three adjacent blocks separated by...

The slab is reinforced concrete and yes there are both drop panels and column capitals. There is cracking at each interior bay (roughly middle span), but the worst cracking is located at the first bay. And yes, the cracks start to turn the corner at the corner bays. The overall slab (and...

There are no signs of concrete delamination or exposed rusted rebar. Other than the cracking, the slab appears to be in pretty good condition. The underside of slab is not in a splash zone and I do not see signs of carbonation (this is not a marine environment). Unfortunately, there is no...

In this case, we have a 10" flat slab (6" drop at column; column capitals extend 12" from columns). Cracking appears to be located at the centre of middle strips but does extend through both middle and column strips in the opposite direction. At this point, I am trying to determine if...

I completed a visual review of the underside of a two-way concrete slab as part of a reserve fund study. The slab supports first floor residential space and the structure for three additional residential floors and roof above. Below the slab is a parking garage. The parking garage is below...

I am working on ice rink slab project where the finished slab has been complete for 3 months. Upon final review of the finished slab surface, holes were noted in the surface. Originally this seemed to be from bubbles or aggregate popout. The client continues to find holes even after the...

I am designing a small but important building for a small community in Canada's arctic. I am aware that the winds in the area are quite heavy. To begin the design, I obtained climatic data from the meteorological service in Canada as per the national building code (data was not provided in the...

I am in the preliminary design phases of a new concrete slab for an existing arena. Currently the arena floor is sand. The client would like a concrete floor so the space can be used for other than ice hockey during the summer. The rink is covered and relies on natural cooling to create the...

Just some additional information associated with above comments. The 12" column dimension is parallel with the beam so any bending is around the weak axis. The parking layout limits the width of the column to 12". I have contacted additional resources in my area and they to suggest...

I have designed my beams as continuous over my interior columns and the column as a pinned support. I am now wondering how to adequately detail my column to beam connection to make sure I have a pinned support. Any additional help would be greatly appreciated. gmf

The floor is being replaced due to severe corrosion of the reinforcing steel over a majority of the slab and beams. gmf

I am currently working on a parking slab replacement project in Canada. The parking slab is covered with asphalt and serves as surface parking for a hotel. Below the slab is an under ground parking garage. The slab is a one-way slab spanning approximately 20ft. between beams cast monolithicly...

We are working on the removal and replacement of an existing 8 inch thick parking garage slab at an existing hotel. The slab supports an exterior above ground parking lot (a drive through area is provided in front of the hotel for drop-off and pick-up), and is suspended over a single level...

We are designing wood shear walls in British Columbia, Canada for a residential home. The building codes in B.C. require that lateral design be completed given the high seismic zone. My colleague has obtained his minimum lateral earthquake force, V using V = S(Ta)MvIeW/(RdRo) and has designed...

Thanks everyone for the help. This has been great. I have been able to get a udl load confidently at the top and bottom of the banner using Roark's and analyzing the banner as a simple flexible (cable) beam. Now using the udl's I have obtained at the top and bottom of the banner, I am...

I am working on the wall anchors for a large 40'w x 20'h banner which is to be suspended from the uppermost wall of an 11 storey building. The wall consist of 4 inch thick precast panels. I am trying to use 5/8" dia. through bolts spaced at 5'-0" on centre (top and bottom of banner). As I...

Thank you everyone for the responses. All were basically where I was headed with the project. Thank you for the back up.

I am working with a client who has experienced settlements of their building of up to 8"-12". As such, we will be looking to re-level the building by jacking the settled corner back to its original position. The small, wood framed hotel, generates revenue in the summer, during which time the...

Can anyone help me regarding roof anchor testing requirements in Ontario, Canada? For a newly installed anchor system, do all new anchors, whether secured to the roof/structure using adhesive anchors or not, require initial on-site testing prior to use? Thanks gmf

I am looking for design examples (specifically for selecting plate thickness) regarding steel plates subject to bending. Does anyone know of a website or reference material that may help? I have been taught to find the moment applied to the plate and corresponding Smin (Smin = M/0.9*fy)...