New foundation

[Soundguy]

Well.. those were the two ideas I was suspecting to hear with that kind of footer... built to torque specification, and for a specific vibration isolation rating... I was guessing 2-3k psi for the concrete, and use as a dead weight rather than a weight bearing situation which might have needed 16k-20k psi concrete.

One question. Will there be any isolation structures used to seperate the machines slab and foundation from the sourounding slab? (Rubber or fiber expansion joints?) etc? If the top slab is continous.. I'm wondering about standing waves....

If your interested.. you're pouring about 210k lbs of concrete into those forms, if anyone asks... useless trivial knowledge.

Soundguy

[Robert_in_NY]

There is a 2" foam board ran around the entire foundation which can be seen in one of the pictures I posted. This seperates it from the rest of the building and the other floor and walls we will build. We finished the initial pour today. It took 2 hours to pour 46 yards of concrete total. We will remove the forms in a couple days and start forming for the second pour which is a floor around this foundation. As for the weight of the concrete I figured it to be quite a lot. We also added 42 tons of 1&2 stone to help backfill around the forms. We just got another 20 tons of crushed gravel for leveling the ground for the 2nd pour. We will probally have another 20 tons or so of crushed gravel dropped before we are done with the final pour. I took some more pictures of the pump and what we ended up with today and will post them later when I get them on the computer. Later.

[Soundguy]

Is foam then going to be used as the expansion joint for the top monlithic slab? or will there be wood/fibre/rubber joints ( surface only ).

Soundguy

[Robert_in_NY]

Our floor will sit level with the foundation allowing the foam to be the barrier there. I am not entirely sure yet what the plans are for the rest but I will let you know when we start it in a couple days. It is up to the bosses to decide as they have to live with it. This is the first foundation that we have recessed into the ground as all the rest have been done at floor level which makes things a lot easier. I am learning a lot on this project which makes it fun. Take care.

[Robert_in_NY]

This is when we started filling the hole. It took about 1.5 hours to fill it and another half hour to clean up the pump.

[Robert_in_NY]

This is a view of the pumper. Nice little machine.

[Thomas]

How many yards did it take?

Cement pumpers sure save a lot of wheel barrow time. [img]/w3tcompact/icons/wink.gif[/img]

[Robert_in_NY]

This is when it was full.

[Robert_in_NY]

It took 46 yards. It is the first time we used the pumper and all of the other foundations were wheel barrowed over to the hole. I don't complain though as it was good exercise and it isn't hard to wheel on concrete. Take care.

[RonL]

Robert

I'm very much interested in how the pumper worked. I have done concrete work but have absolutely no experience with a pumper. First off, was it worthwhile? Is there a reaction at the nozzle end like on a fire hose? How hard is it to move the hose to the various pour points? Did you rent the pumper? Sorry for all the questions.

RonL