[COM] Renaissance Arcade | 132m | 40 Levels | Realm Apartments

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normh
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[COM] Re: Renaissance Arcade | 132m | 40 Levels | Realm Apartments

#616 Post by normh » Tue Aug 14, 2018 2:04 pm

Pikey wrote:
Tue Aug 14, 2018 8:43 am
normh wrote:
Tue Aug 14, 2018 6:07 am
Student accommodation and Adelaidean dispute has been decided in favour of Student Accommodation. Are these 2 buildings close enough to the Realm that the combined mass will impact views of Realm.
Of or from?

Of, would entirely depend on where you're viewing it from. I'd say if you're coming in from some angles on the North Eastern suburbs (Norwood etc) it may be impeded. Rest of the city aside from South West would have pretty decent views of it.
Sorry my bad, I was curious as to if the combined mass would adversely impact views from the Realm on the north east aspect or are they far enough way it is part of the view. Hope that makes sense. So not just Adelaidean values negatively impacted.

Nort
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[COM] Re: Renaissance Arcade | 132m | 40 Levels | Realm Apartments

#617 Post by Nort » Tue Aug 14, 2018 3:54 pm

normh wrote:
Tue Aug 14, 2018 2:04 pm
Pikey wrote:
Tue Aug 14, 2018 8:43 am
normh wrote:
Tue Aug 14, 2018 6:07 am
Student accommodation and Adelaidean dispute has been decided in favour of Student Accommodation. Are these 2 buildings close enough to the Realm that the combined mass will impact views of Realm.
Of or from?

Of, would entirely depend on where you're viewing it from. I'd say if you're coming in from some angles on the North Eastern suburbs (Norwood etc) it may be impeded. Rest of the city aside from South West would have pretty decent views of it.
Sorry my bad, I was curious as to if the combined mass would adversely impact views from the Realm on the north east aspect or are they far enough way it is part of the view. Hope that makes sense. So not just Adelaidean values negatively impacted.
Bit of both, my guess based on a quick sketch.
view.JPG
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whatstheirname
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[COM] Re: Renaissance Arcade | 132m | 40 Levels | Realm Apartments

#618 Post by whatstheirname » Tue Aug 14, 2018 4:48 pm

Bit more progress and bonus floating digger.
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EBG
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[COM] Re: Renaissance Arcade | 132m | 40 Levels | Realm Apartments

#619 Post by EBG » Sun Aug 19, 2018 4:08 pm

This is an item about "Post Tension Floors" which I posted yesterday under :General development discussion" I reposted here because this flooring system is being on Realm and also on the GPO project at Victoria Square.

Post Tensioned Floors.

Post tensioning of flooring is a means of strengthening concrete floors without making the floor thicker or adding more columns to support the floor. It involves the following steps.
1. At the reinforcing stage hollow metal tubes are laid out in a grid pattern along the length and width of the floor in a grid pattern. These tubes can be either circular or a flattened rectangular shape.
2. The tubes are not perfectly horizontal but tend to move towards the bottom of the concrete slab mid span between the supporting columns and rise towards the top of the slab over the columns. This is to lift the floor up mid span and pull it down over the columns.
3. Steel cables are inserted into each tube and are anchored at one end to a metal plate with a short length (about 1 metre) hanging out at the other end.
4. The rest of the normal reinforcement is then added and the concrete slab is poured.
5. Once the concrete floor has gained minimum strength the free end of the cable is tension up with a hydraulic jack and locked in place. Hence the term “Post tensioned”.
6. 6rout is then injected into the cable tube and the ends of the cables are trimmed off and the cable anchors are finished off with concrete to match the floor edges.

Post tensioned floors allow wider spans between adjacent columns and in some cases thinner floor slabs. Note the actual jacking is carried out when no other workers are present since should a cable snap when being tensioned it could break through the floor surface.

The plans of all structures with post tensioned floors must have their blue prints marked as such so that proper care can be taken in the event of them being demolished.
The following projects are using Post tensioned floors: GPO, Realm and 179 Greenhill Rd Parkside.
For more details see: https://www.youtube.com/watch?v=EFBSV5y-fEg


Picture shows Circular cable ducts at Realm
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circular ducts at realm 18 aug 2018.jpg
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Last edited by EBG on Mon Aug 20, 2018 10:21 pm, edited 2 times in total.

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[COM] Re: Renaissance Arcade | 132m | 40 Levels | Realm Apartments

#620 Post by EBG » Sun Aug 19, 2018 4:13 pm

(Continued from above) to the left is a roll of duct cable, plus a sack of the Flat type cable ducts and on top them the specialist reinforcement to hold the ducts at the correct level. picture at realm site .
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left cable roll. flat ducts and duct holder reiforcement Realm,.jpg
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EBG
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[COM] Re: Renaissance Arcade | 132m | 40 Levels | Realm Apartments

#621 Post by EBG » Sun Aug 19, 2018 4:17 pm

(continued from above),
this picture by shiftaling of the GPO project shows the ducts laid out in a grid pattern.
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shiftaling picture  15 aug cable ducts  at gpo.jpg
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EBG
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[COM] Re: Renaissance Arcade | 132m | 40 Levels | Realm Apartments

#622 Post by EBG » Sun Aug 19, 2018 4:22 pm

But wait there's more, This view from !79 Greenhill Rd project shows the free end of the Ducts before tensioning.
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EBG
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[COM] Re: Renaissance Arcade | 132m | 40 Levels | Realm Apartments

#623 Post by EBG » Sun Aug 19, 2018 4:26 pm

And finally.. view of the cable anchor points (the little dark areas) having been sealed and flushed level with the edge of the floor end. (thanks to normh)
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patched anchor points at GPO building.jpg
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Patrick_27
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[COM] Re: Renaissance Arcade | 132m | 40 Levels | Realm Apartments

#624 Post by Patrick_27 » Sun Aug 19, 2018 5:02 pm

...?

SBD
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[COM] Re: Renaissance Arcade | 132m | 40 Levels | Realm Apartments

#625 Post by SBD » Sun Aug 19, 2018 7:20 pm

EBG wrote:
Sun Aug 19, 2018 4:08 pm
This is an item about "Post Tension Floors" which I posted yesterday under :General development discussion" I reposted here because this flooring system is being on Realm and also on the GPO project at Victoria Square.

Post Tensioned Floors.

Post tensioning of flooring is a means of strengthening concrete floors without making the floor thicker or adding more columns to support the floor. It involves the following steps.
1. At the reinforcing stage hollow metal tubes are laid out in a grid pattern along the length and width of the floor in a grid pattern. These tubes can be either circular or a flattened rectangular shape.
2. The tubes are not perfectly horizontal but tend to rise towards the top of the concrete slab mid span between the supporting columns and move down towards the bottom of the slab over the columns. This is to lift the floor up mid span and pull it down over the columns.
3. Steel cables are inserted into each tube and are anchored at one end to a metal plate with a short length (about 1 metre) hanging out at the other end.
4. The rest of the normal reinforcement is then added and the concrete slab is poured.
5. Once the concrete floor has gained minimum strength the free end of the cable is tension up with a hydraulic jack and locked in place. Hence the term “Post tensioned”.
6. 6rout is then injected into the cable tube and the ends of the cables are trimmed off and the cable anchors are finished off with concrete to match the floor edges.

Post tensioned floors allow wider spans between adjacent columns and in some cases thinner floor slabs. Note the actual jacking is carried out when no other workers are present since should a cable snap when being tensioned it could break through the floor surface.

The plans of all structures with post tensioned floors must have their blue prints marked as such so that proper care can be taken in the event of them being demolished.
The following projects are using Post tensioned floors: GPO, Realm and 179 Greenhill Rd Parkside.
For more details see: https://www.youtube.com/watch?v=EFBSV5y-fEg


Picture shows Circular cable ducts at Realm
Thank you for that explanation. Either I don't understand, or there is a typo in step 2 though.

If the duct rises to near the top of the slap mid-span, wouldn't tensioning the cable tend to pull the slab down in the middle by pulling the duct towards straight? Shouldn't the duct be high in the slap over the columns, and low in the slab mid-spans, so that tightening the cables lifts the middle of the span relative to the ends?

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[COM] Re: Renaissance Arcade | 132m | 40 Levels | Realm Apartments

#626 Post by EBG » Sun Aug 19, 2018 11:31 pm

Yes SBD you are right I wrote it the wrong way around in step 2 the force should be upwards in mid span so the duct is towards the bottom mid span,. thanks for checking.

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[COM] Re: Renaissance Arcade | 132m | 40 Levels | Realm Apartments

#627 Post by whatstheirname » Mon Aug 20, 2018 4:19 pm

More concrete and evidence of what EBG was posting about:
Construction29.jpg
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timtam20292
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[COM] Re: Renaissance Arcade | 132m | 40 Levels | Realm Apartments

#628 Post by timtam20292 » Mon Aug 20, 2018 4:51 pm

So that's the ground floor we are looking at?

normh
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[COM] Re: Renaissance Arcade | 132m | 40 Levels | Realm Apartments

#629 Post by normh » Mon Aug 20, 2018 4:59 pm

timtam20292 wrote:
Mon Aug 20, 2018 4:51 pm
So that's the ground floor we are looking at?
Yes and the dirt "corridor" to the left on which the crane is sitting is an arcade that will link to the Renaissance Arcade, the bottom right will have shops

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[COM] Re: Renaissance Arcade | 132m | 40 Levels | Realm Apartments

#630 Post by SBD » Mon Aug 20, 2018 6:47 pm

normh wrote:
Mon Aug 20, 2018 4:59 pm
timtam20292 wrote:
Mon Aug 20, 2018 4:51 pm
So that's the ground floor we are looking at?
Yes and the dirt "corridor" to the left on which the crane is sitting is an arcade that will link to the Renaissance Arcade, the bottom right will have shops
Do you know what the dirt floor behind the facade has been left for?

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