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Pedigreed Bulldog
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JoeH last won the day on November 15 2019

JoeH had the most liked content!

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About JoeH

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    BMT Certified Know-It-All!

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  • Interests
    Mack trucks. Concrete.

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  • Other Trucks
    1995 RD688S

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  1. That's neat! Interesting that the frame goes up at the front axle!
  2. Just watched the full clip, worth every minute of silence! Glad to see there's a few good representatives out there!
  3. Clogged fuel filter still let's you hit good boost numbers, up until a continually decreasing rpm as the filter becomes more and more clogged. Basically acts like a governor.
  4. And when did you last change your fuel filters?
  5. Vapor barrier under the concrete only prevents ground moisture from soaking up through the slab. It doesn't prevent condensation from forming on a cold floor with warm humid air above it. I wouldn't do any less that 6". If there are parts of the garage that won't/can't have trucks parked on them (shelving/tool areas/etc) you can do one layer of rebar in the middle to save $. For truck lanes/parking areas I'd do the rebar at the 2 and 4 inch depths in the concrete. Metal closer than 2 inches to the surface of the concrete can rust & pop the concrete off. You see this on older bridge underpasses frequently.
  6. How finely crushed are we talking about? 6 inch chunks or 1 inch gravel sized? Or a mixture? Larger chunks could create pressure points, as they don't readily give way to movement like gravel does.
  7. To that point I delivered concrete to a house years ago. Plumbers had to trench the septic out through the existing garage, so they cut a 1 ft wide strip out of the garage floor. The entire garage floor was floating 6 inches!! The dirt had settled away from the slab, leaving the whole garage floor floating! Homeowner was an older gentleman, had been parking his car in there for years. His response? "This'll be the next homeowners problem, not mine!" They finished the septic repair and filled in the trench, leaving the rest of the floor floating!
  8. Interesting! I laugh at "zero emissions". You don't get movement without forcing energy from something. That something will always produce a biproduct, whether it's coal's co2 and ash, or nuclear waste. Then you have the batteries to dispose of, which will likely mostly be recyclable... Waste collection is a good test track for electric trucks. It does make sense for such a localized use, but I wonder how well they will hold up? Maybe they'll glitch out like Toyotas Prius and just accelerate and the driver can't stop? That'd be awfully destructive at 70,000 lbs with 4,000 lbs of torque!! That sucker will keep going till it encounters enough resistance that the tires just sit there spinning on blacktop!
  9. Higher PSI also means more brittle, less forgiving to slab flexing. But again, sub grade prep and rebar are King. What concrete can hold on one square inch dirt can only hold on one square foot. (Give or take). Steel rebar and slab thickness help to disperse point loads (i.e. bottle jacks) across a larger footprint underneath the slab. Worth looking at concrete load flex diagrams to understand how concrete is stressed. When a load is put on the slab, the top half of the slab will be in horizontal compression and the lower half will be in horizontal tension. Having rebar in the top and bottom halves of the slab would make a 3000 PSI slab good enough. Concrete has a lot of compressive strength, but not much tensile strength. The rebar in the lower half is what gives the slab tensile strength during flex to prevent cracking.
  10. Ivanuke is in Houston I believe. It doesn't get cold enough there to justify in-slab heat. I would not do Type III "high early" cement. It'll shorten how long the crew has for working with it. Type I cement will be hard enough in a week to roll trucks across.
  11. Looks like they tried chiseling out the rust, gave up and hammered the outer rail down to get it to close up.
  12. Gotcha, thought you said 2 gunite companies and 4 concrete companies. Gunite trucks looks similar to meter mix trucks, but they produce different products. Not sure how far barrel truck chutes reach. My meter mix truck can reach 18.5 ft straight off the back of the truck. A barrel should be able to reach a bit further. If you break the pour lengthways in half you should be able to reach in 25 ft from either side to cover the 50 ft, assuming the truck can get his tires right up to your forms without hitting any form braces. You may consider using a "screed key" down the length in the middle (along that 25 ft line)to prevent a cold seam and to keep the two halves from being able to shift vertically from each other. Screed keys notch the face of the concrete with an indent that will get filled by a slab being poured against it. It effectively locks the two slabs together so they can't shift vertically. Google should give you pictures of them.
  13. Are two of the concrete plants volumetric mixers? My dad and I own meter mix trucks, personally I'm partial to them. But you want a reputable company with good drivers! Meter mix drivers can't just be drivers, they have to know what good concrete looks like and care enough about their career to want make the best concrete they can for every job! Barrel trucks, drivers don't have to know anything about concrete, but the company as a whole has to be reputable and use quality materials.
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