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Question for a4architect
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Mosby
#511 Posted : Thursday, August 08, 2013 4:55:15 PM
Rank: Member

Joined: 1/26/2009
Posts: 45
@african coloner, Added water reduces the strength of the concrete. It increase the w/c (water/cement raio) which should be maintained at an optimum.
How much did it rain?, when you say "washed" does it imply it rained heavily and eroded the concrete? if the rain was not much, you can let the concrete cure for 7 days and do a non destructive strength test. The 7 day strength will help an engineer determine if your slab, with the reduced strength, can take its intended loads.
If the strength is too low, you unfortunately gota remove the slab and start afresh.
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african coloner
#512 Posted : Thursday, August 08, 2013 9:14:01 PM
Rank: Member

Joined: 10/8/2010
Posts: 446
Location: london
Mosby wrote:
@african coloner, Added water reduces the strength of the concrete. It increase the w/c (water/cement raio) which should be maintained at an optimum.
How much did it rain?, when you say "washed" does it imply it rained heavily and eroded the concrete? if the rain was not much, you can let the concrete cure for 7 days and do a non destructive strength test. The 7 day strength will help an engineer determine if your slab, with the reduced strength, can take its intended loads.
If the strength is too low, you unfortunately gota remove the slab and start afresh.


it rained heavy on last part and washed the cement on top layer though water not leaking through, how long do you cure for the slab?
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a4architect.com
#513 Posted : Friday, August 09, 2013 11:47:04 AM
Rank: Veteran

Joined: 1/4/2010
Posts: 1,668
Location: nairobi
@african coloner. @mosbys advice is proper. Your structural engineer will have to carry out strength tests to ensure strength has not been compromised as per initial structural design.
As Iron Sharpens Iron, So one Man Sharpens Another.
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And1589
#514 Posted : Friday, August 09, 2013 12:47:05 PM
Rank: Member

Joined: 1/9/2009
Posts: 169
Location: Syokimau
@African coloner, if the steel reinforcement was exposed by the rain then its not good news but if it wasn't then at least you have a chance of rescuing the slab because the forces you are supporting with the concrete/reinforced slab are taken care of mostly towards the bottom of the slab.
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ngapat
#515 Posted : Wednesday, August 14, 2013 1:18:32 PM
Rank: Veteran

Joined: 12/11/2006
Posts: 930
@Architect
I have a plot in Utawala (40x80). Actual dimensions are 10.8m by 26m. I plan to build rental units but in phases since i don't have enough cash.
So for 2.5M, how many simple two bedrooms houses can i build on such a land.
Is one bedroom house better than two on this one.

regards
“Invest in yourself. Your career is the engine of your wealth.”
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a4architect.com
#516 Posted : Wednesday, August 14, 2013 4:10:10 PM
Rank: Veteran

Joined: 1/4/2010
Posts: 1,668
Location: nairobi
@ngapat. Would you like low, middle or high cost finishes?
See here for examples
http://www.a4architect.c...ow-cost-flats-in-kenya/

For number of units check here
http://www.a4architect.c...-60-ft-plot-at-membley/

http://www.a4architect.c...bedsitter-flats-rental/

http://www.a4architect.c...-60ft-plot-at-embakasi/

For exact number of units with the maximum ROI, a feasibility study needs to be carried out by a registered architect. Fees for services are as below
www.a4architect.com/about-us/fees-breakdown/
As Iron Sharpens Iron, So one Man Sharpens Another.
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african coloner
#517 Posted : Friday, August 23, 2013 11:09:36 PM
Rank: Member

Joined: 10/8/2010
Posts: 446
Location: london
How do you go about putting a house fire place in an old bungalow house with a big lounge that was originally built without?
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a4architect.com
#518 Posted : Saturday, August 24, 2013 6:15:59 PM
Rank: Veteran

Joined: 1/4/2010
Posts: 1,668
Location: nairobi
@african coloner. Simply construct the chimeny walling from living room floor , through the roof till chimney top. This should be a very simple addition to a house since the chimney wall is self supporting.
As Iron Sharpens Iron, So one Man Sharpens Another.
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kaifastus
#519 Posted : Sunday, August 25, 2013 1:14:45 PM
Rank: Member

Joined: 8/17/2011
Posts: 207
Location: humu humu
Halo guys. am doing mixed units of 4 one bedroomed units,2 2bedroom and 2 bedsittesr on an Eighth..upon copmletion, the total units upto 3rd floor shall be 24. currently at first slab level/shutter..how do i post pics in WaZUA? i intend to first completly finish ground floor. The project is in nakuru whitehouse estate..
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kaifastus
#520 Posted : Sunday, August 25, 2013 2:00:17 PM
Rank: Member

Joined: 8/17/2011
Posts: 207
Location: humu humu
kaifastus wrote:
Halo guys. am doing mixed units of 4 one bedroomed units,2 2bedroom and 2 bedsittesr on an Eighth..upon copmletion, the total units upto 3rd floor shall be 24. currently at first slab level/shutter..how do i post pics in WaZUA? i intend to first completly finish ground floor. The project is in nakuru whitehouse estate..



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