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| | Heat effect cement in Aussie? | |
| | Author | Message |
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halcanada Youngbird
Posts : 4206 Join date : 2014-03-11 Age : 84 Location : Southern Ontario. Canada.
| Subject: Heat effect cement in Aussie? Tue Dec 25, 2018 1:45 am | |
| 300 plus people evacuted from a new high rise. Cracks in the building. Makes one wonder! |
| | | MISTY Oldbird
Posts : 9024 Join date : 2018-01-28 Age : 89 Location : SCARBOROUGH
| Subject: Re: Heat effect cement in Aussie? Tue Dec 25, 2018 3:42 am | |
| Cement very funny stuff, Hal.
They say it never actually goes off.
When doing no fines buildings we used to take test cubes to test the quality of each batch of cement.
When I see the height of some buildings I have a feeling that it may not be a good idea, would never go above two floors myself/
Regards.
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| | | MISTY Oldbird
Posts : 9024 Join date : 2018-01-28 Age : 89 Location : SCARBOROUGH
| Subject: Re: Heat effect cement in Aussie? Tue Dec 25, 2018 4:05 pm | |
| have known a whole floor being torn up in a 14 story block because the concrete did not pass the test, wonder if there is no control and testing now.
Regards. |
| | | halcanada Youngbird
Posts : 4206 Join date : 2014-03-11 Age : 84 Location : Southern Ontario. Canada.
| Subject: Re: Heat effect cement in Aussie? Tue Dec 25, 2018 5:53 pm | |
| Never seen any one test cement when I worked for Wimpeys in Shipley. Was plastering then also. Poured concrete houses are hard to plaster at times. |
| | | barnie Youngbird
Posts : 3064 Join date : 2012-07-25
| Subject: Re: Heat effect cement in Aussie? Tue Dec 25, 2018 8:15 pm | |
| Seen major concrete structure failure in extreme heat countries, the steel re-bar expanding inside the concrete, there's nowhere for the expanding steel to go, expansion causing steel buckling and pressure building up inside the castings and they crack and fail. Was involved in testing faulty lintels used in multi storey car park in Turkey. We wrapped these in massive electric blanket type of wraps and sure enough they showed surface cracks in a very short time. Experts opinion was the configuration of re-enforced steel cage was wrong and wasn't set deep enough into the casting so when baking in the daytime sun, well it was a recipe for disaster. |
| | | Knackered Oldbird
Posts : 14506 Join date : 2013-03-11
| | | | MISTY Oldbird
Posts : 9024 Join date : 2018-01-28 Age : 89 Location : SCARBOROUGH
| Subject: Re: Heat effect cement in Aussie? Wed Dec 26, 2018 4:57 am | |
| Hal, Worked for Wimpey, can assure you many tests are carried out on concrete, starting with Slump Tests and several others.
When using BRC the tests are greater due to the metal.
Regards. |
| | | Knackered Oldbird
Posts : 14506 Join date : 2013-03-11
| Subject: Re: Heat effect cement in Aussie? Wed Dec 26, 2018 9:13 am | |
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| | | MISTY Oldbird
Posts : 9024 Join date : 2018-01-28 Age : 89 Location : SCARBOROUGH
| Subject: Re: Heat effect cement in Aussie? Wed Dec 26, 2018 4:14 pm | |
| Think the technology may be suitable and effective regarding building regulations but it is those entrusted to carry them out that fail in many instances and for varying reasons, in the case of the whole floor having to be replaced the person in charge of the 12s mixer was leaving the company and had a grudge, if the instructions were carried out there was very little possibility of things going wrong but one cannot take certain circumstances and intentions into account.
Regards. |
| | | David Oldbird
Posts : 43215 Join date : 2009-03-18 Location : Leeds
| Subject: Re: Heat effect cement in Aussie? Wed Dec 26, 2018 6:04 pm | |
| unfortunately things like this happen from time to time, can be down to poor materials, poor management or poor workmanship.........I remember when there were a clark of works or some inspector who passed work off on completion, do they still do this, I`m not sure.......but I do know second rate buildings are being built in this country, and a lot of them employ second rate foreign workers..............also it seems, there are not the checks at certain stages by the building inspector from the planning office, years ago every stage had to be passed or you couldn't go any further, now it seems some build whatever they want, the workmanship being very sub standard.
the old saying is very true, pay peanuts, get monkey`s |
| | | Knackered Oldbird
Posts : 14506 Join date : 2013-03-11
| Subject: Re: Heat effect cement in Aussie? Wed Dec 26, 2018 10:37 pm | |
| - David wrote:
- unfortunately things like this happen from time to time, can be down to poor materials, poor management or poor workmanship.........I remember when there were a clark of works or some inspector who passed work off on completion, do they still do this, I`m not sure.......but I do know second rate buildings are being built in this country, and a lot of them employ second rate foreign workers..............also it seems, there are not the checks at certain stages by the building inspector from the planning office, years ago every stage had to be passed or you couldn't go any further, now it seems some build whatever they want, the workmanship being very sub standard.
the old saying is very true, pay peanuts, get monkey`s Councils are forever fighting with developers here David over what they may do or not do type of thing, because of outside pressures by certain bodies saying they can do certain things with the regulation side of things with construction of high rise buildings. True story "local" Developer wanted to build a high rise building, 20 floors type of thing, council said no way you can only build a 19 story building because of our height restrictions we have in place for the local yocal types . Smart a**e type developer said stuff you I'm building my 20 story complex by hook or by crook & he did it, by taken 6 inches of the height of every other floor there as he built it as such. He then, had that feel good moment thing I suspect when the local council building inspection come around for the final clearance so it could be sold on as such. Unfortunately the inspector, then counted the floors there while inspecting it & then said it all has to be torn down I'm & it was in the end with much grief to the developer as he just didn't abide by what council & the clown had agreed on at the start there of the building process etc . |
| | | MISTY Oldbird
Posts : 9024 Join date : 2018-01-28 Age : 89 Location : SCARBOROUGH
| Subject: Re: Heat effect cement in Aussie? Wed Dec 26, 2018 11:13 pm | |
| We do have strict building regulations, and periodically you have those who have contravened them have to pull the building down.
Planning gives the most problems, in some cases it is a matter of who you know.
All councils have a clerk of works or a similar position and in our area are strict in making developers abide by the rules.
As David said, it used to be that every stage from setting out to topping out was inspected and could not go from one stage until the previous one had been passed.
I retired some 19 years ago and whilst working dealt with the Town Hall planning Dept on many occasions involving listed buildings etc;
Had a good working relationship but had to abide by the rules, which at times were more than a little irritating.
Have heard of inferior houses being built on new estates, lease hold, the owners not being aware of the implications and now unable to sell them.
Problems of inferior workmanship, but not those that would be apparent at the final inspection appear to be a major problem that arise within a very short time of occupation.
The developers not interested in sorting the problems out.
The main problem being that the industry has let the first class bricklayers and all the other craftsmen leave the industry and not replace them with their like.
There used to be an apprentice scheme where companies were encouraged to employ young people and were helped financially to do so.
Inferior workmen, inferior buildings.
Regards.
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| | | Knackered Oldbird
Posts : 14506 Join date : 2013-03-11
| Subject: Re: Heat effect cement in Aussie? Thu Dec 27, 2018 8:45 am | |
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