Hi Structural Team
A student was asking me to explain the difference between pinned and fixed connection by concrete beams.
As I started to explain, I realized that this is actually not easy to explain or define the difference, because we actually never have such cases where the beam...
Hi guys
in our office we have a debate about the best welding of the angle section on a gusset plate.
See attached image. I have my own theory and my colleagues also they own one. Now I wanted to extend the debate on this forum to get maybe some new ideas.
Where and how would you weld the...
Hi, I have some problem because the contractor was building brick walls on propped structure.
Now what happens after they "de-propped" the slabs, the bricks started to crack here and there.
How can I prove to the contractor that this was wrong? Obviously he is now arguing that why was he not...
Hi
I was wondering why do we always cut the angle sections by truss connections straight?
When we would cut it parallel to the main bottom and top members then we could reduce the gusset plate size by a significant amount.
This would also lead to shorter "gaps" between the members fixing points...
Hi
a strange question I know but still I wish I could see the forces of each reinforcement bar in a columns. Does someone has such a graphis?
When our concrete columns are in compression (pure central load, no moments, etc)why should we then still need reinforcement?
Why can't we have the...
Hi
I was wondering, this can't be right what most contractors are doing.
They build up the roof structure, provide on top of the purlins the insulation foil and then screw the roof sheeting into it.
Obviously the heated up roof sheeting (corrugated iron) is transferring the heat into the foil...
Hi
it is a long debate in our office how to detail the staircases at best. There are different opinions so that's why I would like to hear your opinion
I believe that a reinforcement drawing must make things clear and easy to understand for the steel fixer. That's why i would even indicate in...
Hallo guys
I wonder what is the best detail for a lift shaft roof slab
should you provide the slope in the concrete or screed?
where at best should you provide the water proofing?
first of all I don't like the Architects required upstands.
Why shall I run this danger if the spout blocks and...
Good Day
I was wondering what would be the most practical solution for the casting of a surface bed. The critical question relates to the intersection of the wall (outside wall). Different solutions have different pros and contras. Maybe I oversee there something but this is what I observe...
Hi
I was wondering what is the best way to slice the slab bottom bars?
See attachment option A, B, C
My colleague says option A would be the best because you have then the double amount of steel in the middle of the slab (where you most loads are)
somehow I can't believe it. It just feels...
Hi
there are so many different brick bonds (courses)
for me it seams that the "englisch bond" one stretcher one header must be still the strongest
but if, so why are people not using only this type of bond?
why would someone still go for a "running bond" ? (except you have a cavity wall)
or...
Hi
I was always wondering what is the right way for the slab bottom reinforcement.
In general we splice it over the beams with the 50xdia splicing length
but is it really necessary?
If you support it just on the edge (see attachment)
you also don't have more anchorage length available then...
Hi
why do people always want to connect / extend roof purlins over trusses?
Is it not more efficient to connect them rather in the middle of the span?
Your deflection would be less and your cut offs would be reduced
see attached sketch
Lolobau...
Hi
this is a big discussion which we are having on the site
what is the correct detail here?
please see attached images
what is your experience and your advise?
lolobau...
Hi
some engineers are specifying a slip joint (2xplastic sheets) between the ring beam and the top of the brick wall.
For what is it good?
Is the idea of the ring beam not to tie together the entire building? and now we basically allow the ring beam to move on top of the walls?
will the wind...
I have a problem with waterproofing of an external wall
Please see the attachment
The Architect is showing this detail and the high wall piece under the DPC shall be also plastered.
I see there a problem, because the moisture of the ground could still penetrate into the wall and raise up...
Hi
we spoka about cracks in plaster already. The answers were very clear for the introduced crack patern
now what is the reason when you have the same patern of crack in a reinforced concrete wall?
see attachment
this can#t be shrinkage because it is reinforced Y12 every 200mm each face...
Hi guys
where would you place your plaster joints?
which plaster panels sizes woudl you recommend?
do you need alwys plaster joints where you have wall junctions? Like perpendicula wall on the inside of the building? Which wall might stiffening the long wall going in front of it and could...
Hi
I discovert iregular cracks in the new plastered wall (see attachment) this cracks i could actually notice very often
From what is it comming? Was the plaster mix wrong? to much water?
Which tips could Igiveth econtractor to mix it the right way...
I would need it to build up an platform of 800mm height difference
And cast a slab on top.
And I was wondering if I can just use the normal polysteryne sheets
build it 700mm up and cast the 100mm slab on top (reinforced with mesh)
would it work? Or could it sattel or spring...
