I looked at the docs. But I can't find the specific sika material that you can put on already *existing flat slab* but with a very small area ponding with water (like above photo shows). Also we prefer not to use any membrane because we don't want more additional dead weight of the waterproof...
The exposed wire mesh is part of the waterproof topping (above the membrane) being chipped off.
Here worker was putting grease to the chipping hammer.
The reason the topping is being chipped off is to remove the bituminous membrane below the topping and replace it with similar or other kinds...
https://www.youtube.com/shorts/s65u2umkFm8
In the video above, My workers pulled up the 7 year old bituminous membrane easily. Is such torch on membrane supposed to be that easy to remove, or was it not property done during the torch on? Just before it they removed the 2" screed/topping whose...
We removed the bituminous membrane sheet and the topping above the membrane because of some leaks. You can still see the old membrane on the upper sides at the edges not yet teared or pulled up. (and the lower left side whose topping were not chipped).
but you can see, the membrane has no...
To reframe the above. Let me ask this question instead.
For one way slab, lb/la => 2
But what if given the same support condition, lb became very short and lb/la = 1/2..
Would the portion bend differently given the same rebars or the same flexure?
reason I'm asking is to analyze a...
In most of our structural plans. You only see this guide for wall. That stiffener vertical and horizonal beams are put every 3 meters (9.8 feet) (in addition to the vertical rebars every 0.6 meter (1.9 feet).
Our city hall building officials waive any computations with regards to walls. All our...
In my country. 99% of steel frame building used masonry exterior wall. This is because aluminum cladding is 5 times more expensive. And hardiflex (or cement board) are not weatherproof. What do you guys use then as exterior cover for the steel frame? The more expensive aluminum cladding?
This...
Dear Experts,
I saw the above building under construction while driving in the street yesterday (I parked at the side and took pictures). This is very common in my neighborhood. May I know why I couldn't find pictures of any steel frame building with masonry exterior wall anywhere in the...
I need thick plate gutter. What are the pros and cons of using thick steel gutter that you weld on i shaped steel beam (Ibeam) and purlins (for inside gutter)?
Kootk,
This thread is entirely relevant because the wall below the I-beam and the I-beam bottom is not aligned!
This is because the columns were not aligned during construction. When the Ibeam was put 5 years ago. It was made straight like the green (where the blue now is the wall). The mid...
Kootk
As shown in the above roof plan. The roof is thin metal sheet and has no diaphgram or brace to the left and right side 5.5 m span Ibeam (upper left which is the concerned now) that will support the 39" parapet. The small horizontal elements at middle are only sagrods that connects...
Kootk
So given the w8x21 is very small, and has poor torsion, how do you strengthen its torsion if not for plates or trusses. You are saying the plates are only viable solution?
Perhaps we can get the biggest flat bar and just weld every 3" of them with thickness of 1/8"?
Tomfh
What do...
I found out WT comes from hybrid of Tee Beam split from Wide Flange beam.
This is very rare to find, and if our steel company won't cut 8mm 4x8 feet plate. The more they would not be willing to cut an Wide flange into half and then pieces!
Creative team,
What steel sections can you think of...
Bad news. Our steel company refused to cut the 8mm 4x8 feet plate into 8 feet by 7 inches long we are planning to get. And there is only one company selling such 4x8 feet plate. They said their machine not capable of cutting them but capable only for bigger cuts like baseplates. Is this...
They were the designer of the building but on many occasions their skills were doubtful. I'll give example.
1. They design sorely special moments frames. We almost never used shear walls. But when I confronted them years ago why the shear resistance of the concrete beam was less than a certain...
The masons cut the middle and inserted it. He said they do it in all buildings.
Anyway. On top of the masonry above is a a 5.5 meter (18 feet) span W8x21 beam (unbraced at middle or not torsionally restraint at middle) and will carry 4 to 6 inches of 39" high parapet or load of 273kN/meter...
Usually spacing between vertical rebars are 24" (600mm) and every 3 layers and they use 10mm.
I bought 12mm and told the masons to use spacing in between middle of each block. He did that right on the first layer but then on the second layer, that's the problem where the rebar is in between the...
\\\These 6" 700psi nonbearing walls are almost done. But I need to put parapet on top of the I shaped Beam. The ibeam longest span is 5.5 meters. Can parapet be supported above it or do i have to close up the flange with plates to increaes torsion resistance. I don't like my parapet to twist...
I talked to a steel company who refused to cut the 4 x 8 feet 0.4" plate into pieces small enough to cover the sides of the I shaped beam. They wanted to sell one whole piece. What tool has anyone used to cut 0.4" thick plate? Is it possible the steel company used acetylene to cut them...
The 39" high 4" thin masonry parapet will be put at center of the wide flange ibeam. Not eccentric. There will be vertical reinforcement inside each masonry block welded to the top of the ibeam (think studs).
The longitudinal side plates reinforcement of the Ibeam (turning it into HSS) is to...
