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Sinking Building..
Rank: Elder Joined: 7/22/2008 Posts: 2,702
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What is the cause of this: It seems to be a uniform sinking of the whole building? Tenants of high-rise apartment move out in panic after building begins to sink – PHOTOSThank God people got out before it collapsed. Is there any way that this building is savable or must it all be demolished? The owner must be the most stressed, poorest millionaire in town! And some people had purchased apartments there, wuuuuuuuuiiiiii!!!
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Rank: New-farer Joined: 2/14/2015 Posts: 97 Location: Kenya
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It's scarily, here is a video <<<link>>>
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Rank: User Joined: 8/15/2013 Posts: 13,236 Location: Vacuum
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The only stressed owner is the one who purchased, the one who sold must be relaxing somewhere in Bali Indonesia If Obiero did it, Who Am I?
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Rank: Member Joined: 8/27/2010 Posts: 495 Location: Nairobi
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Probably a sinkhole: Quote:What is a "Sinkhole"?
A sinkhole is an area of ground that has no natural external surface drainage--when it rains, all of the water stays inside the sinkhole and typically drains into the subsurface. Sinkholes can vary from a few feet to hundreds of acres and from less than 1 to more than 100 feet deep. Some are shaped like shallow bowls or saucers whereas others have vertical walls; some hold water and form natural ponds.
Typically, sinkholes form so slowly that little change is noticeable, but they can form suddenly when a collapse occurs. Such a collapse can have a dramatic effect if it occurs in an urban setting.
New sinkholes have been correlated to land-use practices, especially from groundwater pumping and from construction and development practices. Sinkholes can also form when natural water-drainage patterns are changed and new water-diversion systems are developed. Some sinkholes form when the land surface is changed, such as when industrial and runoff-storage ponds are created. The substantial weight of the new material can trigger an underground collapse of supporting material, thus causing a sinkhole.
The overburden sediments that cover buried cavities in the aquifer systems are delicately balanced by groundwater fluid pressure. The water below ground is actually helping to keep the surface soil in place. Groundwater pumping for urban water supply and for irrigation can produce new sinkholes In sinkhole-prone areas. If pumping results in a lowering of groundwater levels, then underground structural failure, and thus, sinkholes, can occur. Would be interesting to know if the apartment blocks were supplied from a local borehole. Sent from my Black Nokia 3310
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Rank: Member Joined: 8/15/2015 Posts: 817
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very strange because to lay such a foundation for a huge building like that allot of digging all the sway down could have been done and sinkholes spotted before even before the foundation was put in place.as usual this is just shoddy workmanship
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Rank: New-farer Joined: 8/23/2015 Posts: 64 Location: nairobi
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this is a massive loss!!I guess he used the wrong chuma or substandard Chuma.
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Rank: Elder Joined: 6/23/2009 Posts: 13,493 Location: nairobi
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point wrote:this is a massive loss!!I guess he used the wrong chuma or substandard Chuma. It's not the steel.. Must be the ground as per sink hole theory.. The building is going down uniform, not structurally deficient
HF 30,000 ABP 3.49; KQ 414,100 ABP 7.92; MTN 23,800 ABP 6.45
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Rank: Member Joined: 9/9/2015 Posts: 233
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Some civil engineers are so used to malpractises, that they are the ones telling you this and that way around building regulations. U think they are saving you money but.. Why tell you that the site is not viable and not have a project to engineer? "Buy when there's blood in the streets, even if the blood is your own."
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Rank: Veteran Joined: 5/5/2011 Posts: 1,059
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The Great wrote:Some civil engineers are so used to malpractises, that they are the ones telling you this and that way around building regulations. U think they are saving you money but.. Why tell you that the site is not viable and not have a project to engineer? The fact that the building didn't crumble down shows that it's okay chumas were done right and all, only problem is the foundations (he who builds his house on sand) In Kiambu and surrounding areas with red soil guys assume the ground is stable but with the rains and the numerous septic tanks, soak pits, boreholes and wells make it easier for the soil to become saturated, if the walls of a water tank caves in the process may cascade to the foundations and a house being heavily will cut through muddy red soil like butter. SOLUTION the guy has some options to save his house, underpin the house and build a 1.2 to 1.5 meter raft foundation which wold have been what they used in the first place that should cost him a cool 10-20 m. To Each His Own
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Rank: Veteran Joined: 6/23/2011 Posts: 1,740 Location: Nairobi
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Very sad. The contractor f##d up
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Rank: Veteran Joined: 11/17/2009 Posts: 2,038 Location: GA
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kayhara wrote:The Great wrote:Some civil engineers are so used to malpractises, that they are the ones telling you this and that way around building regulations. U think they are saving you money but.. Why tell you that the site is not viable and not have a project to engineer? The fact that the building didn't crumble down shows that it's okay chumas were done right and all, only problem is the foundations (he who builds his house on sand) In Kiambu and surrounding areas with red soil guys assume the ground is stable but with the rains and the numerous septic tanks, soak pits, boreholes and wells make it easier for the soil to become saturated, if the walls of a water tank caves in the process may cascade to the foundations and a house being heavily will cut through muddy red soil like butter. SOLUTION the guy has some options to save his house, underpin the house and build a 1.2 to 1.5 meter raft foundation which wold have been what they used in the first place that should cost him a cool 10-20 m. Hapa hakuna options i don't see anyone setting foot inside that building again despite what he does.Those who have bought and the owners wasikizane bring down the building and lease out the open space
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Rank: Veteran Joined: 7/5/2010 Posts: 2,061 Location: Nairobi
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madollar wrote:kayhara wrote:The Great wrote:Some civil engineers are so used to malpractises, that they are the ones telling you this and that way around building regulations. U think they are saving you money but.. Why tell you that the site is not viable and not have a project to engineer? The fact that the building didn't crumble down shows that it's okay chumas were done right and all, only problem is the foundations (he who builds his house on sand) In Kiambu and surrounding areas with red soil guys assume the ground is stable but with the rains and the numerous septic tanks, soak pits, boreholes and wells make it easier for the soil to become saturated, if the walls of a water tank caves in the process may cascade to the foundations and a house being heavily will cut through muddy red soil like butter. SOLUTION the guy has some options to save his house, underpin the house and build a 1.2 to 1.5 meter raft foundation which wold have been what they used in the first place that should cost him a cool 10-20 m. Hapa hakuna options i don't see anyone setting foot inside that building again despite what he does.Those who have bought and the owners wasikizane bring down the building and lease out the open space Wrong. Kenyans have a very short collective memory and fatalistic tendencies....if the building is not brought down, the owners will do some remedial structural work, do fancy paint and finishing works, grease a few palms, sit tight and wait for time to pass and the storm to quiet down some ...perhaps lower rents and gullible Kenyans will troop back and take up units. The building needs to come down. End of.
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Rank: Member Joined: 8/27/2010 Posts: 495 Location: Nairobi
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Cornelius Vanderbilt wrote:very strange because to lay such a foundation for a huge building like that allot of digging all the sway down could have been done and sinkholes spotted before even before the foundation was put in place.as usual this is just shoddy workmanship Wouldn't be the first time:  Quote:Do any human activities induce sinkholes? Sure. Sometimes in karst areas [irregular landscapes formed when soluble rocks like limestone dissolve], when you drill a well—looking for water or for mining purposes—as you're pulling water out of the ground, you're lowering the groundwater table. That creates almost a toilet-flushing effect. You're lowering that groundwater level, and the soil that was sitting above just falls out. That's one way. We also induce sinkholes when we start putting up parking lots and buildings and changing what we call the hydrologic regime. Instead of the water naturally soaking into the ground, it's now running off and being concentrated—being put into the ground at one point. (See "Guatemala Sinkholes Created by Humans, Not Nature.") http://news.nationalgeog...xplainer-urban-science/
Sent from my Black Nokia 3310
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Rank: Veteran Joined: 11/17/2009 Posts: 2,038 Location: GA
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quicksand wrote:madollar wrote:kayhara wrote:The Great wrote:Some civil engineers are so used to malpractises, that they are the ones telling you this and that way around building regulations. U think they are saving you money but.. Why tell you that the site is not viable and not have a project to engineer? The fact that the building didn't crumble down shows that it's okay chumas were done right and all, only problem is the foundations (he who builds his house on sand) In Kiambu and surrounding areas with red soil guys assume the ground is stable but with the rains and the numerous septic tanks, soak pits, boreholes and wells make it easier for the soil to become saturated, if the walls of a water tank caves in the process may cascade to the foundations and a house being heavily will cut through muddy red soil like butter. SOLUTION the guy has some options to save his house, underpin the house and build a 1.2 to 1.5 meter raft foundation which wold have been what they used in the first place that should cost him a cool 10-20 m. Hapa hakuna options i don't see anyone setting foot inside that building again despite what he does.Those who have bought and the owners wasikizane bring down the building and lease out the open space Wrong. Kenyans have a very short collective memory and fatalistic tendencies....if the building is not brought down, the owners will do some remedial structural work, do fancy paint and finishing works, grease a few palms, sit tight and wait for time to pass and the storm to quiet down some ...perhaps lower rents and gullible Kenyans will troop back and take up units. The building needs to come down. End of. That building has messed up the entire real estate industry in ruaka info spreads fast this days expect to hear depressed uptakes for both rental and for sale in the coming months.For sale units being the hardest hit majority of the property buyers are usually an enlightened lot.
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Rank: Elder Joined: 3/29/2011 Posts: 2,242
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kayhara wrote:The Great wrote:Some civil engineers are so used to malpractises, that they are the ones telling you this and that way around building regulations. U think they are saving you money but.. Why tell you that the site is not viable and not have a project to engineer? The fact that the building didn't crumble down shows that it's okay chumas were done right and all, only problem is the foundations (he who builds his house on sand) In Kiambu and surrounding areas with red soil guys assume the ground is stable but with the rains and the numerous septic tanks, soak pits, boreholes and wells make it easier for the soil to become saturated, if the walls of a water tank caves in the process may cascade to the foundations and a house being heavily will cut through muddy red soil like butter. SOLUTION the guy has some options to save his house, underpin the house and build a 1.2 to 1.5 meter raft foundation which wold have been what they used in the first place that should cost him a cool 10-20 m. That is called throwing good money onto bad money. I doubt anybody would risk his life and those of loved ones to moves in a house being supported by stilts. only traditional granaries are cool on stilts. "Things that matter most must never be at the mercy of things that matter least." Goethe
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Rank: Elder Joined: 6/23/2009 Posts: 13,493 Location: nairobi
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Gathige wrote:kayhara wrote:The Great wrote:Some civil engineers are so used to malpractises, that they are the ones telling you this and that way around building regulations. U think they are saving you money but.. Why tell you that the site is not viable and not have a project to engineer? The fact that the building didn't crumble down shows that it's okay chumas were done right and all, only problem is the foundations (he who builds his house on sand) In Kiambu and surrounding areas with red soil guys assume the ground is stable but with the rains and the numerous septic tanks, soak pits, boreholes and wells make it easier for the soil to become saturated, if the walls of a water tank caves in the process may cascade to the foundations and a house being heavily will cut through muddy red soil like butter. SOLUTION the guy has some options to save his house, underpin the house and build a 1.2 to 1.5 meter raft foundation which wold have been what they used in the first place that should cost him a cool 10-20 m. That is called throwing good money onto bad money. I doubt anybody would risk his life and those of loved ones to moves in a house being supported by stilts. only traditional granaries are cool on stilts. They could do away with the parking lot and place the said stilts plus hardcore at the ground level.. It will require costly engineering but it could be salvaged
HF 30,000 ABP 3.49; KQ 414,100 ABP 7.92; MTN 23,800 ABP 6.45
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