whats your opinion on shotcrete/shockcrete/spray. i do understand that a metal end, double end tip hose is dangerous very dangerous. so why does the industry let shotcrete/shockcrete/spray to still be a safe practice when there is obviously a metal end attached to the end. just a question boss :)

Hey Fred, glad you asked. Let me ask you a qustion what is the reason to have a double ended hose on a tip hose? none right? why risk it. You should always be as safe as posible.

So how do you look upon the of putting a wall pipe or two on the end of a boom hose?

guys use a little common sense please , okay shotcrete as of now there is no alternative way to do it so use appropriate ppe, as far as wall pipes go these arent the problem as long as safety straps , clamps are pinned off, its the metal ends on the hose thats like the ball on the end of a chain every wall pipe I have seen surge goes up not in a whipping action, I have very limited shotcrete experience but have never had one whip on me I am sure it happens I have just never seen it, with the air hose and things connected to the nozzle I am sure this could be a very deadly whip waiting to happen, maybe its something needs looking into, but the wall pipes I have locked hundred of times without a single whip incident.

The potential energy stored and released in a 2" shotcrete hose is much less than in a large-rock concrete pumping system.  Sure the pressures may be higher, but the volume of compressed air is likelly much less, and the area through which it is expelled is much smaller, it's no doubt bound to give a guy a ride, but I suspect that the duration of energy release will be longer.  generally, the mix is much richer, (read - more paste) so that hard packing plugs would be rare.  (just an assumption on my part)

Besides, there has not been an alternative to a hard nozzle produced.

use of METAL ended hoses is not recomended by manufactures of concrete pumps.

It does not mean they are illigal , it just means there is more risk to your hose man is all.

So now that you know and understand this , the choice is ultimatly up to you as an operator/owner/hose man to decide what is safe for you.

As far as shotcrete goes, that is  totally a differant horse of another color.

If I recall correctly,

shotcrete is not a high output application as far as the output of concrete is concerned, and the operator at the machine should no when it is pressuring before the nozzleman should even be concerned, and turn the damn thing off.