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I am designing a 1:12 ramp that slopes up 3/4" to cover a gap discrepancy in the construction. The issue I have is at the top of my ramp is a 1/4" plate that's only 24" long. According to section 405.7 I need a 60" long landing which "changes in level is not premitted". Well section 304.2...

@DaveAtkins it's a steel plate with concrete anchors. And I'd agree with you for small spans that the plate is stiff enough for a simply supported case. But for long spans I would detemine the tension load and settling with method I mentioned in the post (fix-pin and use the moment to find the...

@KootK you are correct. I forgot to convert the moment back into inches when I was divding the moment arm which was in inches.

That's a good point that I never connected. So another question is would you consider the anchor as a pin for fix? A fix in case 2 would give me a much larger tension load and there would be a tension load and a moment which I'm not sure how to design the anchor for. Would the total load be...

I've been following some old calculations to determine the tension load on the anchor but now I'm second guessing on weather this is really right. Previously the tension load for image was determined based on the free body: 1) [Fixed] --- b --- [PIN] where the moment was found and divided by...

That looks like THE book I need. Thanks!

I am looking more at the screw itself. For pull-out, bearing, etc I would take the approiate standards. The aluminum design manual reduces the strength screws by 1.25 + 3.0 ASD and bolts are just ASD reduction. AISC A360 just mentions bolts and 'threaded parts' which I am hesitent to use for...

Hello There! I working on a number of connection calculators so that I can easily paste them into my work. The issue I am having is with stainless steel screw connections and that I cannot find a clear standard to calculate their capacity. AISC A370 and Design Guide 27 for the most part...

I'm in the process of updating my calculations to comply with the 2015 manual, specifically referring to part 1, chapters F4.1 (2010) and chapter 2 for the yielding limit state. It appears that the flexural strength has increased from 1.3 to 1.5. I'm curious if anyone knows the reason behind...

I have a triangular composite deck that's fully supported on one leg and pinned on the others. I need to determine if my pourstop can carry a wheel load all the way back to the support when the deck tapers out. So I have 3 layers of reinforcments to spread the load. The first one is the deck...

My general situations is that my door say weights 300 lbs and it being held up on hinges. Would gravity contribute to keeping it close? Or can I apply any force and theorically it would swing open. My experience is that the weight would contribute but drawing the free body would only show...

I have an old reference from Sierra Pacific for Continious Hinge capacities and I want to find a more updated document/guide and I can't see to find any except the one from BHWA but that's a paid reference. And it looks like it's just a testing procedure. Does any have a design guide for...

I'm designing a road plate and I want to know the length of the plate can I use to resist bending from a wheel load? The plate will be simply supported and free on the other sides.

@EdStainless they plan to fully insulate the area, spray foam an all. So there shouldn't be any moisture. On a slightly different note, my guy says he needs to run a conduit through all of my joists and beams. Is there such thing as a stiffener plate that I can put around the opening to transfer...

I'm using aluminum channel but I assumed that the connection would be same if not similar. I'm trying to avoid welding as I am building channel frames and then fastening them together in the field. I'm currently debating on weather I want to do two rows of fasteners when my channel is only 4" or...

I know that there is a nailing pattering for built up wood beam. I'd like to know if there's a similar pattern/ standard for back to back channels to be used as beams.

I have an assignment in which I am to propose a wastewater treatment design for Smila in the Ukraine. I need to write a 5 page proposal design but I do not know where to start. Do you have an idea of where I should start? I've looked at wiki list wastewater treatment technologies but it all seem...