Why is it so?

[Pedro_The_Swift]

Please explain,,

why are some pylons round and some square?
Is the RED stairway netting a safety feature?
from this angle at least two pylons arent vertical?
Is the tall white tower a concrete pumping thingo?
What is the looped hose for on the pylon drilling machine? Hydraulics?

[rangieman]

Sorry Doctor Julius Sumner Miller passed away April 14 1987 (77 years of age)
No more why is it so [bighmmm]

[V8Ian]

Please explain,,

why are some pylons round and some square?
Buying available specials ex-Bunnings

Is the RED stairway netting a safety feature?
It might be a rubbish chute.

from this angle at least two pylons arent vertical?
Often the case to distribute loads in different directions.

Is the tall white tower a concrete pumping thingo?
Tower crane.

What is the looped hose for on the pylon drilling machine? Hydraulics?
:spudnikwhat:

Where are we going with this, Pedro?

[flyinglandrover]

On oil and gas drill rigs the hose (called a Kelly Hose) carries drilling mud into the drill pipe and down to the drill bit. The mud provides lubrication for the drill pipe, carries cuttings from the well and provides hydrostatic pressure to prevent blow outs. Maybe this hose does something similar, I guess not the pressure side but carrying out cuttings and providing lubrication.

[scarry]

Where are we going with this, Pedro?

Off topic for something different?[bighmmm][biggrin]

[Tins]

from this angle at least two pylons arent vertical?


Perhaps they have been looking at the Taj Mahal, where the towers ( minarets? ) are built leaning outwards so they kook vertical in perspective. Just a thought...

[Pedro_The_Swift]

sigh,,,

[bigrolf]

[Tins]

sigh,,,

[bigrolf]

Well, what did you expect??

[Mick_Marsh]

Sorry Doctor Julius Sumner Miller passed away April 14 1987 (77 years of age)
No more why is it so [bighmmm]

I got a block of chocolate and a book signed by him.
Very nice chap.

[Pedro_The_Swift]

Well, what did you expect??


Funnily enough,,,
I expected a few serious reasons why all these things are as shot,,,

If this was covered in red dust and 1000kays from the nearest maccas I'd be hard up to keep up with the replies,,,


no worries John, just thought there'd be someone in "normal" construction. [bighmmm]

[Tins]

Funnily enough,,,
I expected a few serious reasons why all these things are as shot,,,

If this was covered in red dust and 1000kays from the nearest maccas I'd be hard up to keep up with the replies,,,


no worries John, just thought there'd be someone in "normal" construction. [bighmmm]

My response re the Taj Mahal was reasonably serious....

[Pedro_The_Swift]

and at least ONE continent away from the place in question[bigrolf]

[Tins]

and at least ONE continent away from the place in question[bigrolf]

6° of separation, Pedro.

[Homestar]

The things with the big auger is a piling machine. Round piles are generally used around the perimeter as there shape works easier with the top cap and also to become the walls of basement they will excavate. The square piles will be inside the structure. As Ian said, the piles can be angled to distribute load into the best substrate under the building - the building will have already been designed and its main column locations known - if theres stronger ground off to one side of that they will angle the piles into it. Big white thing on the left is a tower crane. Not sure what the red netting thingy is - could be a covered access stairway for the workers.

Edit - yes, red thing is an access stairway - if you zoom in you can just make out the zig zag of the stairways.

I spend at least one day a week trudgung around sites like this at work.

[trog]

MY guess is one is adrill rig that also inerts the reo and then injects the concrete while the other is a tower concrete pump. Something big going up ? By the looks of things a few tower cranes too .

[Pedro_The_Swift]

Thanks Gav[smilebigeye]

its the (top cut off) skinney thing on the right,,
looks like a half finished one far left,
there are two long arms with normal looking concrete pumping arms, on each side, standing straight up, on top of the them..

I tried to just drag the pic off my desktop into the post,, and it showed everything,, untill I hit enter and windows crashed--[bigrolf]

[V8Ian]

Perhaps they have been looking at the Taj Mahal, where the towers ( minarets? ) are built leaning outwards so they kook vertical in perspective. Just a thought...
Like a Rolls Royce grill, eh?

[Tins]

Like a Rolls Royce grill, eh?

Not sure, but if you mean grille, then no. RR did not have grilles, they had radiator enclosures, and they were perfectly vertical, thank you very much.

[V8Ian]

Funnily enough,,,
I expected a few serious reasons why all these things are as shot,,,

If this was covered in red dust and 1000kays from the nearest maccas I'd be hard up to keep up with the replies,,,


no worries John, just thought there'd be someone in "normal" construction. [bighmmm]
I gave it my best shot, Pedro, 60% seriousness ain't bad for me. [biggrin]

[Pedro_The_Swift]

MY guess is one is adrill rig that also inerts the reo and then injects the concrete while the other is a tower concrete pump. Something big going up ? By the looks of things a few tower cranes too .

yea Trog,, 4 cranes within spitting distance,,
a Tower concrete pump,, that sounds about right..
its the Sunshine Coast Plaza extension,, multilevel carparks and David jones building,,

[DiscoMick]

Which is stronger - round or square?

[rick130]

Which is stronger - round or square?I'm guessing square can be stiffer at a given diameter as the distance corner to corner is greater than a similar OD round tube/bar(column?)

[Homestar]

Which is stronger - round or square?

Piles are loaded in compression, so surface area of the pile which cintacts the ground is what offers the resistance to the buildings weight, so round in that regard, but there's a whole lot more to take into consideration and I don't know why the different shapes are used. I chat to Engineers that have just done this their whole lives and most of what they say goes in ine ear and out the other - it's a very technical area. Next time I'll ask more questions...

[JDNSW]

Not sure, but if you mean grille, then no. RR did not have grilles, they had radiator enclosures, and they were perfectly vertical, thank you very much.

But, I believe, with the sides very slightly bowed, so they look perfectly straight. A practice referred to as "entasis", and first seen in architecture. Best known in ancient Greek columns, but used in many cultures.

[V8Ian]

Thanks John, I stand corrected. I saw it on a show about building Rolls Royces some time ago.

[Tins]

But, I believe, with the sides very slightly bowed, so they look perfectly straight. A practice referred to as "entasis", and first seen in architecture. Best known in ancient Greek columns, but used in many cultures.

Pretty much what I was pointing out re the Taj Mahal. And, I believe that you are correct on the taller RR rads, such as the Phantoms. I'd have to dig to find if the 20HP or 20/25s did that. I doubt that the 20, or the 40/50 did, but I stand to be corrected.

[DiscoDiscoMan]

Pedro: Homestar and trig are on the money.
Circular piles are usually bored piles or pored (concrete and steel ) into the hole. the hole bored by the auger drilling rig.
Square piles are normally driven (hammered) into the ground.
Selection depends on ground conditions. Dry, moist, wet soils and what’s constructed on top or around it.
Bored piles rely on the end bearing capacity... the round area at the bottom of the hole. Driven piles rely on the end bearing and the skin friction on the sides between the soil and pile (concrete or sometimes steel).

[DiscoDiscoMan]

Bored piles- like digging a hole and putting in a fence post
Driven piles- like banging in a star picket or tent peg