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Hi Group, For one of my project, the contractor did not install the crane runway girders within the tolerence. The rails for crane are now at roughly 5/8" (15.9mm) offset from the centre of the web of the runway girder. Runway girder is wide flange beam with cap channel and has the web...

Hi Group, I am looking for foundation design guidance for a 40m tall and 2.5m in diameter stack for an industrial building. The native soil is 3m below the finished grade and will mos likely require a deep foundation solution. What are the design considerations i.e., seismic and wind lateral...

Hi Group, For one of our project, contractor had installed the column and framing on levelling plate and nut with column bases ungrouted. Before the GC had a chance to go and grout all column bases, the steel contractor used cables for temporary supports that were tied to column base at a few...

Hi Group, I had a column with a 10"x10"x1/2" base plate with 2-3/4" sitting on 1.5" grout for a project. The contractor somehow did not get the top of footing and anchor bolt location correct. The underside of the baseplate is 3.5" from top of pier. They ended up slotting existing holes to fit...

Hi Group, I need to specify connection between back-to-back channels to the bottom chord of the joist. The channels are there to support pipe hangers. The total load at each end of the channel will be 1500 lb. I am envisioning a connection similar to the one below. Instead of full length rod...

Hi Group, I need to provide guy wire anchors to support the mechanical duct for wind uplift. The wires will be installed at roughly 45-60 degree angle and the guy wire anchor will consist of a round HSS tube with eye-bolt and base plate that will be welded to the roof beam top flange. There...

Hi Group, The client wants to use a metal deck with checkered plate in a penthouse floor. Note that the metal deck is the primiary structural element supporting the selfweight of the floor and and other live loads - the checkered plate on top will be only 1/4" thick plate with epoxy finish to...

Hi Group, I am seeking some guidance on designing a concrete pile cap for a foundation supported by helical piles. I am adding a new column inside an existing building to allow roof framing modification for new roof openings. The column is interior and will not be resisting any lateral load...

Hi Group, I have a 2.7m x 2.7m wide-spread footing with a 0.6x0.6 pier. The client is adding a rooftop unit that results in bearing pressure greater than the allowable based on the record drawing. In the past, I have underpinned the existing footing by pouring a larger pad below the existing...

Hi All, I have an existing concrete floor beam that is designed for a certain floor live load. However, the client is installing a piece of equipment that will result in an area load larger than the design floor load. There is no information available on the reinforcing of the beam. I am...

Hi Group, Contractor working on one of our project has cut through the foundation wall at the corner. The corner is detailed as a column as it supports loading from two levels above. Any suggestions how to reinstate the capacity? I was thinking of thickening the corner on the inside or...

Hi Group, Please refer to the image below. The photo is from an exterior stair framing from a low to a high roof. All framing members were originally galvanized. We have observed rust stains primarily at the joint locations and for the life of me, I am not able to figure out why galvanized...

Hi Group, Point 1: I have a 10" x 10" x 5/8" HSS stub post for an equipment platform that has a crack running in the vertical direction along one of the corners. The post also has some bulging on the sides. The post is adequately designed for the loads. However, I am unclear what may have...

Hi Group, I have an existing slab-on-beam system that requires new MEP openings through the floor slab. We are looking at 6 - 5" dia openings in one row. The slab layout and opening location are shown in the image attached. I have created a FE model and have the localized bending moment and...

Hi Group, I am replacing an existing wood deck with a metal deck for one of the projects. The existing roof system consists of OWSJ with 2x6 wood nailer attached to the joists using 5/16" dia. x 6" bolts at 2' and 2" wood deck attached to the nailer. My question is can I simply take out the...

Hi All, I have an existing load-bearing 8" thick double-layer solid brick wall similar to the one circled in the image below. I want to put a new beam supported on top of the wall with an end reaction of roughly 180kN. I want to check the axial ( & bending due to eccentricity) capacity of the...

Hi All, I just wanted to get some opinions /ideas on how to best support new penthouse roof column on top of an existing double-layer brick wall. The wall is currently supporting roof joists and the new columns fall direction above the joists spacing based on architectural layout. I am thinking...

Hi All, For one of my projects, I am adding a new penthouse on top of the existing roof. The new penthouse columns can only be arranged such that they fall directly above the existing roof joists. Connection detail to support the column on the joists is not something I have seen before...

I need to provide additional metal deck fasteners along a perimeter wall (30m)to provide adequate diaphragm shear capacity. The existing deck is composite steel metal deck with concrete topping. Chipping the concrete to expose deck is going to be a lot of work. I am wondering if the deck...

Hi Group, I am considering extending existing column spread footing for a new column as part of the expansion. As shown in the sketch the existing spread footings are within 10ft of each other but are at complete different founding elevation. The original construction drawings require bearing...