Precast Cement Panels

user20594

Blastserve, What you are doing is awesome. Hard work sucks but you have a customer. I have a ton of used stuff you can have. The lift stuff you are fighting with is a non issue. Every body rents lifts tell them you want your own. I spend 6,000 a month on them, its part of traveling and working make the GC get you one. United Rentals charges me 3,000 a month for a sixty foot JLG sx 600. I have used every model they have from the 120' at 5000 a month to my current model a 40' footer.

blastserv

benny, you are right the surface tek pots are small and they do seem to be a starter pot...BUT.i asked everyone the same question over and over but no one seams to be able to give me a good answer.i even called you and not that your answer was bad it just wasnt the answer i was looking for.if my surface tek pot that hold 2.5 cubic feet is too small then how come it will blast for the same amount of time that a 6 cubic ft clemco or marco will blast for...according to there published specs.i see it to be a hinderance to buy a larger pot that cant go in the places that my surface tek pot will go if it is not going to last any longer...and be heavier for things like a lift etc...

as far as in the basket no...it was straped to the outside of the basket with straps and was a little crazy but i managed.yes at one point i blasted a small part of the job with it loaded on the outside of the basket with me by myself in the basket.the lift i am using is a jlg power stik.it is hugei think it will go over 100ft...but cant be positive.

i am running 1 inch air feed hose and 3/4id blast hose...of course it is not the biggest and it will take a little longer but i am working my way throught this trade as i did with the last career i had and it will make all sense when i look back in 10 years...as far as the compressor it will be upgraded as soon as i sell and collect the money for a old vehicle that i am selling soon.

as far as the job.......

i got to a spot on the job thursday night that really kicked my ass...it was like the other spot that i pressumed was elastomeric paint and was in a section of 2800 sq ft...i started on it like i had no problems.by the end of the night i had shot a little under half of a super sack(around 2000lbs) in 8 hours with the large groove tip in my pot and only covered around 300 sq ft...not good.we are kind of trying to figure out what to do with this section.i am a man of my word and i want to do the rest of the job but i cant go to the job and pay him to take the paint off the walls wich is what is going on...he is kicking around the idea of putting a chemical on it to remoce the bulk of it and then i would come in and blast the residue off???maybe it would work,any suggestions?it is also on a wall that faces north wich is probablly the least amount of sun and the wall i did a test patch on was a west facing wall wich has the most amount of sun so i was thinking the paint might have been really dry and beat on my second tower and test patch wall wich gave a false reading...i have no knowledge of paint and the efects the sun has but it sure seams like i am blasting glue off the walls...i worked on my gear all day doing oil changes and did a couple of impatient customers jobs and tomorrow i will be shooting another porsche for a repeat customer.it is a little tireing right now but i will get it all...no problem...

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painter213

Blastserv;

One reason that your pot can last so long is it is not able to push alot of media through the system. A Clemco 6.0 cu ft pot with 1 1/4" plumbing can push 500 to 600 pound of media through at a a good productive rate in about 25-35 minutes. This is with a 1 1/4" blast hose and at least a #7 blast nozzle.

With your pot only running a 3/4" blast hose and not sure what size nozzle your running, your pot can last a long time, but in that time how much surface area are you covering?

I can take a 6.0 cu ft pot and cover a lot of surface area in a short amount of time. So take the amount of time that you spend on a given area and think of how much more area you can cover with the bigger equipment.

If your nozzle is putting out a pattern that you can write your name on the wall, then your not going to cover much area. Go to youtube and watch some of the videos that I have up of blast work being done and look at the size of the pattern and the area covered.

I can say that I can make of pot last 2 hours, but how much area did I cover in the two hours?

If I step up the flow rate and equipment size I can cover two to three more times the surface area in about 45 minutes to what it would have taken and used less abrasive to have done it.

If you need to, give me a call again. I will be here at my hotel all day today and then on Monday I will be back out at the Three Mile Island Nuke Site.

Sorry that your having such a hard time with this job. I have seen it many times before. Trying to do a large scale job with too small equipment is very hard to do. With the big pots, if you cannot get them close, you just add more blast hose to get you closer. By doing that though you have to remember that you will need more air to push the abrasive the longer distance. The longer the hose the more friction loss. So a larger CFM compresor would be needed to be able to keep the air pressure up at the blast nozzle.

As far as a chemical stripper, look at Peel Away. You would apply it and then cover it with a paper film, let it sit for a set amount of time depending on the thickness of the coating and then you would come in and scrape the coating off with large pole scrapers. We are doing this at the NUKE plant for lead abatement and it works fine. There is different types for different coating types.

Here is a link to there site: http://www.peelaway.com/

Check them out and see if there is a supplier in your area. If so can get some and do a test area with it at least. Give me a call when you can. During the week I am back here at the Hotel by 4:30pm EST.

Good Luck

__________________
Benny Abbott
Abbott Consulting and Coating Inspections
E-Mail: babbott@abbottcoatinginspections.com
Phone: (205-717-0292)

blastserv

the concrete restoration contractor that hired me applied peel away on the walls at the base of the east facing tower and we thought the peel away was the problem i was having but then later kinda figured that wasnt the case but it did not peel anything away...that is why i got called.

as far as production rates...i used roughly 1500 lbs of black beauty in one night on a no.5 nozzle and cover a little over 1000 sq ft...is this low or high? i really dont know...the wall/tower that i am on now i used 2000lbs and did 200-300 sq ft.i know that has absolutely nothing to do with my equipment...

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painter213

On the peel away, they might have used the wrong system. There is different systems for different coatings. I would get a peel away rep out the look at it for you. As far as the other. 1.5 pound per sq ft is a very good production rate. The other is pretty bad. One thing is running only 1500 pound in a whole shift is pretty low. Usually one operator would run thru about 4000 pound of so and cover about 2,500 to 3,000 sq ft or more on concrete. Give me a call when you can. Take Care.

__________________
Benny Abbott
Abbott Consulting and Coating Inspections
E-Mail: babbott@abbottcoatinginspections.com
Phone: (205-717-0292)

user20594

Benny, What is that, it looks like a bacteria build up or rust under water on your new name tag.

painter213

It's just a close up of corrosion on a tank is all. I take a lot of different pictures on jobs and this one looked cool to me is all.

__________________
Benny Abbott
Abbott Consulting and Coating Inspections
E-Mail: babbott@abbottcoatinginspections.com
Phone: (205-717-0292)

user20594

Benny, I know you are the top of the line serious type but it looked to me like really bad pussy!!!!

blastserv

pussy out your way must look real different then here...lol

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Betterblast

Blastserv, I was testing on my shop wall and with the good latex paint on my block walls I too only saw about 9 or 10 square feet per bag with my 185 and #5. The paint seems to just absorb the impact. The sun I think had hardened the paint on the one side of the building you were on and so it was crispy and can chip off as it is blasted. I am concerned about handling larger jobs when they come up so I am up grading to a 450. Now I wonder if my surface tek pot wil work with it, I'll increase the hose sizes, or if it may negate some of the expected gains.
Benny if you see this did you say it is better to have longer blast hose to reach a job instead of longer air hose? Unless of course it's a hight issue and you need to bring a blast hose up a hundred feet.

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When it has to be clean, Betterblast it!
glenmarcinc@yahoo.com
P-610-323-8084
http://betterblast.com/

blastserv

the guy at surface tek,Steve,he told me that they have gone as long as 250 ft worth of air hose and had no real issues as far as loss of production.the issue is not going any further than 50 ft on the blast hose due to friction loss and especially not making all 50 of those feet going vertical.this is why i am loading the pot onto the roof of this job and letting the hose swing down on the larger part of the towers.

i told the guy that hired me that he was going to have to board up around the glass and he told me that all the glass was getting replaced.as of yesterday he told me that there were already a few replaced and that i hit them with my blast and it looked like bird shot stuck in the glass.they gc was upset about it...boy o' boy i tell you people are sometimes so slow to get it in life.what was so hard about hanging some wood around the glass?now he is out of pocket for some glass...he wasnt mad at me but it is still the fact that that could have been a job saved by a few minutes of work...

anyway i am suppose to be out there tonight to finish up a few things and see what happens after they put peel a way on the north facing tower...by the way they are using a product called smart strip by peel a way.not to sure iif it worked good or not...

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user20594

Todd, have you ever subscribed to the JPCL magazine before? This Magazine and the SSPC has been a huge tool for myself in developing a knowledge of coatings and how to remove them. It does cost to get it but it is well worth it. you can get paint bid tracker for free for a week if you log in new. They have a community of people there also. I used to be a member

blastserv

here are the pics from this job...

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blastserv

More...

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blastserv

for those that want to know what reed minerals looks like...this is the tampa location...
the third one shows a wall of black beauty...

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