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Question for a4architect
Rank: Member Joined: 12/16/2008 Posts: 111
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What size of water tanks (i.e. 1000lts, 2000lts, etc) would you recommend to use as overhead tanks for individual units on a flat
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Rank: Member Joined: 3/15/2009 Posts: 359
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Sevian wrote:Shefad wrote:Try a concreting contractor. They are negotiable,affordable and highly flexible. They also come with all plant and labour.
However, ready mix concrete will give you the best quality and is also negotiable to some extent.
All the best @shefad are concreting contractors the same as those factory pre-mixed truckers with huge mitungi's at the back and a machine for pumping? They charged 13800 per cubic metre at a site in Lavi. What's the consolidated koroga rate? Whats your cost of sand, ballast per tonne and cement per 50kg bag as delivered on site?
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Rank: Member Joined: 3/15/2009 Posts: 359
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Tito44 wrote:What size of water tanks (i.e. 1000lts, 2000lts, etc) would you recommend to use as overhead tanks for individual units on a flat What is the size of the units or rather how many people on average will a unit house? What type of bathrooms do you have? bucket, shower or bathtub? Apartment/flat or stand alone units? What is the frequency of supply/disruptions i.e is water supplied twice a week, once a week, once a fortnight e.t.c
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Rank: Member Joined: 12/16/2008 Posts: 111
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shocks wrote:Tito44 wrote:What size of water tanks (i.e. 1000lts, 2000lts, etc) would you recommend to use as overhead tanks for individual units on a flat What is the size of the units or rather how many people on average will a unit house? 2bedroom unitsWhat type of bathrooms do you have? bucket, shower or bathtub? ShowerApartment/flat or stand alone units? Flat. Tanks are for individual unitsWhat is the frequency of supply/disruptions i.e is water supplied twice a week, once a week, once a fortnight e.t.c About 4 days a week. However pumping costs might be high
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Rank: Hello Joined: 8/3/2015 Posts: 3 Location: Nairobi
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This forum should have a thank-meter of some sort. Lots of beneficial advice at no charge "I'm a good cook. I've been cooking answers since my first exam years ago"
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Rank: Elder Joined: 2/22/2009 Posts: 2,449 Location: Africa
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sparkly wrote:RE: KARIBU HOMES at Athi River, being constructed by a Chinese Co.
Went to have a look at the project which is going for KShs 1.4M - 5.7M.
Thought the project was strange but couldn't quite get my mind to it.
Then it struck me that they are building multi-storey apartments (up to 4 floors) without support columns!
All i could see were some polystyrene boards between the apartments and some zinc/aluminium strips in the mortar.
What kind of technology is this? How reliable is it? The project is being supervised by an architect called Felix Lati. He is quite respected in the industry and does not compromise on quality. I'm persuaded to purchase a unit simply because of his track record. The polystyrene boards have been positioned at the expansion joints. and the steel strips are a standard method of reinforcing masonry bonds
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Rank: Member Joined: 3/15/2009 Posts: 359
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Tito44 wrote:shocks wrote:Tito44 wrote:What size of water tanks (i.e. 1000lts, 2000lts, etc) would you recommend to use as overhead tanks for individual units on a flat What is the size of the units or rather how many people on average will a unit house? 2bedroom unitsWhat type of bathrooms do you have? bucket, shower or bathtub? ShowerApartment/flat or stand alone units? Flat. Tanks are for individual unitsWhat is the frequency of supply/disruptions i.e is water supplied twice a week, once a week, once a fortnight e.t.c About 4 days a week. However pumping costs might be high Assuming 4 people per house and a max. water usage of 100-150lit per person per day, then you need 800-1200lit for a period of 48hours without water supply. That 150lit a day is a very safe estimate which is only breached on a general cleaning day
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Rank: Elder Joined: 9/23/2009 Posts: 8,083 Location: Enk are Nyirobi
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Shak wrote:sparkly wrote:RE: KARIBU HOMES at Athi River, being constructed by a Chinese Co.
Went to have a look at the project which is going for KShs 1.4M - 5.7M.
Thought the project was strange but couldn't quite get my mind to it.
Then it struck me that they are building multi-storey apartments (up to 4 floors) without support columns!
All i could see were some polystyrene boards between the apartments and some zinc/aluminium strips in the mortar.
What kind of technology is this? How reliable is it? The project is being supervised by an architect called Felix Lati. He is quite respected in the industry and does not compromise on quality. I'm persuaded to purchase a unit simply because of his track record. The polystyrene boards have been positioned at the expansion joints. and the steel strips are a standard method of reinforcing masonry bonds Thanks @Shak. So you you reckon it's a safe place investment? Life is short. Live passionately.
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Rank: New-farer Joined: 12/3/2009 Posts: 12 Location: Nairobi
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@Tito44, give us some more information. Eg what is the size of the units i.e. no of bedrooms, expected population and reliability of water source?
However, estimate the size of the tank by multiplying the average population of the unit * 40 litres * 7days
Thats for middle income neighbourhoods
Good luck
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Rank: New-farer Joined: 12/18/2012 Posts: 94
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sparkly wrote:Shak wrote:sparkly wrote:RE: KARIBU HOMES at Athi River, being constructed by a Chinese Co.
Went to have a look at the project which is going for KShs 1.4M - 5.7M.
Thought the project was strange but couldn't quite get my mind to it.
Then it struck me that they are building multi-storey apartments (up to 4 floors) without support columns!
All i could see were some polystyrene boards between the apartments and some zinc/aluminium strips in the mortar.
What kind of technology is this? How reliable is it? The project is being supervised by an architect called Felix Lati. He is quite respected in the industry and does not compromise on quality. I'm persuaded to purchase a unit simply because of his track record. The polystyrene boards have been positioned at the expansion joints. and the steel strips are a standard method of reinforcing masonry bonds Thanks @Shak. So you you reckon it's a safe place investment? Do they have completed units ... or samples units?
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Rank: New-farer Joined: 12/18/2012 Posts: 94
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sparkly wrote:Shak wrote:sparkly wrote:RE: KARIBU HOMES at Athi River, being constructed by a Chinese Co.
Went to have a look at the project which is going for KShs 1.4M - 5.7M.
Thought the project was strange but couldn't quite get my mind to it.
Then it struck me that they are building multi-storey apartments (up to 4 floors) without support columns!
All i could see were some polystyrene boards between the apartments and some zinc/aluminium strips in the mortar.
What kind of technology is this? How reliable is it? The project is being supervised by an architect called Felix Lati. He is quite respected in the industry and does not compromise on quality. I'm persuaded to purchase a unit simply because of his track record. The polystyrene boards have been positioned at the expansion joints. and the steel strips are a standard method of reinforcing masonry bonds Thanks @Shak. So you you reckon it's a safe place investment? Do they have completed units ... or samples units?
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Rank: Elder Joined: 2/22/2009 Posts: 2,449 Location: Africa
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Tara wrote:sparkly wrote:Shak wrote:sparkly wrote:RE: KARIBU HOMES at Athi River, being constructed by a Chinese Co.
Went to have a look at the project which is going for KShs 1.4M - 5.7M.
Thought the project was strange but couldn't quite get my mind to it.
Then it struck me that they are building multi-storey apartments (up to 4 floors) without support columns!
All i could see were some polystyrene boards between the apartments and some zinc/aluminium strips in the mortar.
What kind of technology is this? How reliable is it? The project is being supervised by an architect called Felix Lati. He is quite respected in the industry and does not compromise on quality. I'm persuaded to purchase a unit simply because of his track record. The polystyrene boards have been positioned at the expansion joints. and the steel strips are a standard method of reinforcing masonry bonds Thanks @Shak. So you you reckon it's a safe place investment? Do they have completed units ... or samples units? I'm informed the show house is ready. @Sparkly, based on what I know about the consultants I would say it is a worthy investment. I have seen several storeyed structures built without columns. As a result the stones used are normally thick and built up from larger than usual strip foundations. In addition the internal walls are designed to be load bearing.
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Rank: Member Joined: 2/20/2007 Posts: 767
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I am planning to put up a four storey apartment building. Have been thinking on ways to save costs. Has anyone considered using metal sheets as shutter for the slabs then re use it for doing the doors and gate. One can also use 4x2 and 3x2 cypress timber for the formwork support then re use these for door frames, roofing and wardrobes. Any thoughts on this? Pros, cons? They must find it difficult....... those who have taken authority as the truth, rather than truth as the authority. -G. Massey.
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Rank: Member Joined: 2/20/2007 Posts: 767
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tom_boy wrote:I am planning to put up a four storey apartment building. Have been thinking on ways to save costs. Has anyone considered using metal sheets as shutter for the slabs then re use it for doing the doors and gate. One can also use 4x2 and 3x2 cypress timber for the formwork support then re use these for door frames, roofing and wardrobes. Any thoughts on this? Pros, cons? ? They must find it difficult....... those who have taken authority as the truth, rather than truth as the authority. -G. Massey.
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Rank: New-farer Joined: 12/3/2009 Posts: 12 Location: Nairobi
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@ tom_by, it would be disastrous to use 4x2 and 3x2 timber as formwork props as they are too expensive! Formwork accounts for approximately 30% of concreting costs. Save by hiring metal forms. For a four storeyed structure you can also reuse the timber but you need a very good carpenter to design your formwork for multiple use.
Conrete also degrades timber significantly hence you might not be able to use the same timber in door frames and trusses.
Try the following cost cutting schemes:
-Reduce formwork costs by using self supporting forms or modular formwork
-Partition all internal walls with light weight reinforced polystyrene walls
-Design all internal walls as non-load bearing and use hollow blocks for the same
Best of luck
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Rank: Member Joined: 2/20/2007 Posts: 767
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Shefad wrote:@ tom_by, it would be disastrous to use 4x2 and 3x2 timber as formwork props as they are too expensive! Formwork accounts for approximately 30% of concreting costs. Save by hiring metal forms. For a four storeyed structure you can also reuse the timber but you need a very good carpenter to design your formwork for multiple use.
Conrete also degrades timber significantly hence you might not be able to use the same timber in door frames and trusses.
Try the following cost cutting schemes:
-Reduce formwork costs by using self supporting forms or modular formwork
-Partition all internal walls with light weight reinforced polystyrene walls
-Design all internal walls as non-load bearing and use hollow blocks for the same
Best of luck Thanks for the feed back. They must find it difficult....... those who have taken authority as the truth, rather than truth as the authority. -G. Massey.
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Rank: Member Joined: 9/3/2015 Posts: 118 Location: Nairobi
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nakujua wrote:@a4architect ama any one who has knowledge on this - sema I have put up a small bungalow and due to space constraints I decide to increase space by adding a floor.
1. Is it possible to do that for a bungalow and what are the implication design wise and also for building approval.
2. would it be cheaper to tear down the bungalow and start the house a-fresh.
If 1 is possible who would one go for, an architect ama engineer, na hawa engineers wa nyumba kidogo wanapatikana kweli, have always thought engineers come in when we have complex houses. Its ok, js ensure rebar spacing at 250mm c/c and slab thickness 6 inches (or 150mm)
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Rank: Member Joined: 9/3/2015 Posts: 118 Location: Nairobi
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tom_boy wrote:Shefad wrote:@ tom_by, it would be disastrous to use 4x2 and 3x2 timber as formwork props as they are too expensive! Formwork accounts for approximately 30% of concreting costs. Save by hiring metal forms. For a four storeyed structure you can also reuse the timber but you need a very good carpenter to design your formwork for multiple use.
Conrete also degrades timber significantly hence you might not be able to use the same timber in door frames and trusses.
Try the following cost cutting schemes:
-Reduce formwork costs by using self supporting forms or modular formwork
-Partition all internal walls with light weight reinforced polystyrene walls
-Design all internal walls as non-load bearing and use hollow blocks for the same
Best of luck Thanks for the feed back. alternatively, ensure your engineer designs as few walls as possible as load bearing (in the instance of a load-bearing structure) and allow for 150mm thick stone (readily available from ndarugu at that size), then use the board type timber used by the chinese. with a good carpenter, you might not need a significant investment as you can use the timber on all the suspended floors above as shefad said above. for props you can hire the steel ones, less cutting needed and no significant costs as opposed to buying timber props (though you might need to confirm the same. good luck.
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Rank: Veteran Joined: 9/21/2011 Posts: 2,032
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Musimo wrote:nakujua wrote:@a4architect ama any one who has knowledge on this - sema I have put up a small bungalow and due to space constraints I decide to increase space by adding a floor.
1. Is it possible to do that for a bungalow and what are the implication design wise and also for building approval.
2. would it be cheaper to tear down the bungalow and start the house a-fresh.
If 1 is possible who would one go for, an architect ama engineer, na hawa engineers wa nyumba kidogo wanapatikana kweli, have always thought engineers come in when we have complex houses. Its ok, js ensure rebar spacing at 250mm c/c and slab thickness 6 inches (or 150mm) @ musimo this advise is based on what background info? It's better to comment generally but always qualify your comments - like in this case, he needs to consula structural eng who will assess all the factors
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Rank: Elder Joined: 7/28/2015 Posts: 9,562 Location: Rodi Kopany, Homa Bay
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limanika wrote:Musimo wrote:nakujua wrote:@a4architect ama any one who has knowledge on this - sema I have put up a small bungalow and due to space constraints I decide to increase space by adding a floor.
1. Is it possible to do that for a bungalow and what are the implication design wise and also for building approval.
2. would it be cheaper to tear down the bungalow and start the house a-fresh.
If 1 is possible who would one go for, an architect ama engineer, na hawa engineers wa nyumba kidogo wanapatikana kweli, have always thought engineers come in when we have complex houses. Its ok, js ensure rebar spacing at 250mm c/c and slab thickness 6 inches (or 150mm) @ musimo this advise is based on what background info? It's better to comment generally but always qualify your comments - like in this case, he needs to consula structural eng who will assess all the factors I know someone who put up a 2bdrm bungalow as phase 1 and after sometime it was easy to extend the hse to 4 bdrm by adding 2 bdrms. So likewise in your case find a way of adding a bdrm or 2 to the existing building instead of complicating matters by adding a floor or demolishing the building. Or build a servant quarter. Your teenage kijana will really appreciate the space and freedom that comes with the SQ/simba.
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