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...
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...
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...
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...
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)...
I am currently conducting field reviews for a steel railing installation on a roof. The railings are to be galvanized. Following an initial site review we noticed that the vertical members appear to be galvanized, given the typical "flat" grey colour one would expect for galvanized...
Does anyone have information regarding the resistance capacity for 2 layers of 22 ga. steel deck vs. one, and more importantly, are there any suggestions/reference material for connecting both deck layers together to achieve composite action? Thank you.
An Engineer provides a design for the client (an addition to an existing building). After the client has arranged to have the excavation phase completed, the Engineer comes back admitting that he/she has made a mistake and overestimated the amount of excavation required. The mistake ends up...
