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Hi All, I'm looking for a relatively clean way to connect a wide flange beam to an existing beam reinforced with a WT section at the bottom. The extra challenge is that the connecting beam is lower than the the reinforced beam. Please take a look at the attached sketch. I hate to cope too much...

Hi, I've not come across this before but understanding early 1900's steel construction is constantly presenting something new/old to me. I've googled and found "flat head" rivets but I've only come across them for the first time on a rehab project. They are not in critical connections but I'm...

We have a project where the existing 8ft cantilevered triple LVL beams for a balcony have deteriorated. These are main beams and the balcony joists are perpendicular to these. We want to cut the main beams at the face of the building and install flitch plates to replace their strength. We will...

We typically use the the weaker of the section modulus for minor axis bending of a channel (Syy -X vs Syy +X), but is that overly conservative? Can someone point me to a good reference to back this up? Thanks!

I'm being asked to give a capacity of an 1860's granite stone wall. Assuming that I have them repoint the wall with a lime mortar trying to match the original (assuming it needs it), is there any direction on calculating its capacity? They are looking to make some additions. I would assume that...

I've designed large diameter structural pipe supports in the past but have always provided either a curved hanger or a contoured saddle. I have a new contractor saying that he does not want to use a saddle or rollers. The pipe diameters range up to 24" and are PVC Sch 80. Before I speak with him...

I found a great video on youtube for modeling a wood frame building in RISA but not cold form steel. Any suggestions for examples?

I have a 5/16" wire rope extending over 900ft and it will be in constant tension (hanging). The Minimum breaking strength is 8520 lbs and the safe working load is 1700 lbs. It will need to hold a maximum of 1000 lbs. I thought I read somewhere that strength decreases does for nylon rope but what...

Hello, I am looking to calculate the wind loads on an exterior ceiling soffit. From the threads that I've read, it seems that I am to design C&C loads per the walls adjacent to the soffit. See thread507-383398. Can someone provide a code reference for this? Is the research done by Peter Vickery...

Does anyone know the height limit (if there is one) for a suspended scaffold/swing stage? Not finding it.... Thanks!

I've got a client looking for a letter certifying the "longevity" of using powder actuated fasteners for a ceiling grid system. I know these fasteners have been used for ceiling grids as well as pipe supports for some time now. I am unwilling to write a letter unless I have some kind of...

I'm looking for a good Unreinforced Brick Masonry Design book. Preferably with a lot of good examples. A good explanation of the history of building design with brick and previous design considerations would be welcome. Thanks in advance!

Hello All, I'm looking for a formula to calculate the capacity of a fillet weld for a round post with a horizontal load at the top inducing a moment. Thanks!

I posted this question on the forum 3 years ago but did not get an answer. I finally did got the information that I needed but somehow I cannot find the calculations. I am trying to calculate the % solid of debris netting from a permeability test performed by a manufacturer. The permeability...

I am working with a contractor who needs to remove the limestone veneer on the lower portion of a building built around 1950. He is asking me to calculate what is required to hold up the brick veneer above the limestone veneer. This is what I'm working with: 1. The building is a 9 story steel...

Can someone tell me what the tensile bond strength mortar should have to the brick and where I can find it? Thanks! Clarke Engineering Services, PC Jobsite Engineering and Consulting www.anchorengineer.com

I've seen a lot of topics regarding cold joints in concrete slabs/beams/walls that deal mostly with structural capacities but I haven't seen a solid answer to waterproofing the joint. I've been asked by a contractor to review a slab that was supposed to be poured monolithically but the last...

Does anyone know if segmental retaining wall programs take into account the stone behind the wall (used for drainage) when it gives you a geo-grid lenght? I was going to add an additional 1 foot of length but didn't want to overdo it. Thanks. Clarke Engineering Services, PC Jobsite Engineering...

I'm looking for some assistance on how to repair the bottom of a concrete slab in a parking garage. The contractor decided to start repairing the slab by saw-cutting around the spalling area but the area was so large that entire lengths of rebar started to fall. Fortunately he shored the slab...

The technical information from scaffold manufacturers gives you the capacity of a frame braced or tied at different tiers (vertically). The majority of scaffoldind designs that I've seen have a horizontal spacing of at least 16' (2 frame bays). Is there technical information to back this up? I...