You mean just wearing shades they need to close their eyes to weld.. hmm.. i'll ask them tomorrow about this and maybe give them welding goggles they can't afford.. here's what they are building:
Originally the wide flange above it will support a concrete wall above and hardieflex below.. but...
They used hammer and hit the weld to remove the surface black slag. So I should check each connection and make sure all slags are removed to see what's at bottom.. but for such thin sections.. there should be fusion beneath the slags.. isn't it.. by impurities you mean the slag is covering the...
This is the only respirator (half face with the paint cartridge) available at a large depot. I got it to take a peek at the fillet welding (2 pictures shown below). I researched for over 2 hours about the difference between particulate respirator and vapor protection respirator.. logically.. you...
Because we owners deal with contractors.. we don't interact directly with workers... they won't listen to us, they have their ways. And the contractors don't believe inhaling hardiflex dusts is hazardous himself.. because he inhales them too..
I have to let the caretaker wet the entire floor...
Here's the worker cutting Hardieflex board a while ago and directly inhaling the dusts (he only covers his head from the sun but his nose and mouth open):
I told him inhaling the hardieflex dusts from cutting is dangerous.. but he just laughed saying he has done it for several years. He is...
Yes. I requested James Hardie cement boards but they dont follow any precautions so i think ill just avoid the site for a week and hope it rains next week to remove all the dusts.
Im sorry. My location is really the Philippines. I mentioned Indonesia because want to be anonymous and just...
This is the hierarchy of construction here. Owner deals with contractors. The contractors workers boss is their contractor. I had several times at odds with the workers because they won't follow my direction (they listen to their boss only). Construction hire engineers to check the project. But...
I paid the contractor (he hired his welders) over $10,000 for the job. This is what they gave me. I am learning what is the proper welding technique and principles so I can know if what they are doing are normal in the industry and how spread these style is.
Well. I'll check the high rise and...
Oh. When the welder did full weld. They covered their faces with their a shirt wrapped around the face. This is the common sight of welders you will see in every building being constructed.. very rare will you see any welding protective gear.. The following were the old welders who did the wide...
Thanks for the tips about ultraviolet. Ill get shades for myself because i observe the welding too from afar under sun.
About welder. 99% of welders in our country wears sfuff like it. Remember their $15 daily wage is to support their family including schools. It explains why most dont have...
In other words.. a 6011 with low current and a 6013 with high current would be equivalent?
And a bigger 1/8 6013 would be stronger than a smaller 3/32 6013?
Because when welding thinner 1.7mm Cee section with 4.5mm angle bar.. it seems to take long. Since we are in charge of budget.. we can...
Here's pic of my new welder welding the 1.7mm vertical Cee section (purlins) to a 4.5mm angular 3x3".
I gave him the 6013 3/32 electrode.. but he told me a while ago it takes too long to weld.. he wants bigger one.. should I give him larger version of 6013 (what is it) or should I give him a...
Gtaw. We changed gears 2 messages ago and solving a third problem.. that is welding thin to thick metal or 1.7mm purlins (Cee section) to 10mm wide flange flange. You are saying that whenever there is thin section mixed with thicked section. one must use 6013 and treat the thick section as thin...
In our place. We don't use MIG because it is heavier and it can explode.. note our welders don't wear any protective gear.. they only use clothes to cover their face and broken shades because they can't afford any protective gear (imagine those ISIS in Syria figure doing welding).. remember our...
gtaw.. I wonder if you agree with this web info about the difference between weld fusion and weld penetration.
http://www.lincolnelectric.com/en-us/support/process-and-theory/Pages/weld-fusion-weld-penetration.aspx
"Theoretically (but not realistically), you could even have complete fusion to...
Gtaw i was NOT referring to 18mm. But thin 1.8mm section
So 1.8mm thickness vs 10mm thickness weld is controlled by the current. I talked with the new welder now he said 6011 can be used on 1.8mm thick purlins by controlling the current. He is not metallurgist but jus ordinary welder who earns...
Material Specification is "A36 and SS400". From our supplier..
http://www.reganindustrial.com/home.php?pg=sections
What do you think about SS400?
See http://www.meadinfo.org/2010/09/jis-g-3101-ss400-steel-properties-spec.html?m=1
I dont know if it means combination of A36 and SS400 alloy or...
Our designers are one of the biggest in the country:
http://www.rbsanchez.net/
But they are not familiar about welding.. saying it's up to contractor to do it right. But my old contractor has already ran away. They just hired welding subcontractor who don't even own any welding machines...
The senior structural engineer said we never use bolts on purlins. That all the hundreds of billboards in the streets don't use bolts but welded. Reviewing the old welding jobs. I realized all the purlins were spliced welded like the following:
Searching in the net for bolted pulins. I found...
The senior structural engineer advised against bolted purlins because he said they can tear especially if there is movement in the frame.. therefore welded purlins are advised.. anyway can you show pictures of any bolted connected purlins? Maybe they are not for seismic.
The welded parts are...
