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Machine cut stone blocks vs hand chiseled stone blocks
murenj
#1 Posted : Tuesday, October 06, 2009 10:38:00 AM
Rank: Member


Joined: 7/22/2008
Posts: 851
Location: nairobi
I am yet to decide which is the best,cost wise and quality of finished product. Any one in the know?

Muthonwa a Agikuyu
Djinn
#2 Posted : Tuesday, October 06, 2009 11:37:00 AM
Rank: Elder


Joined: 11/13/2008
Posts: 1,565
I think machine cut - stone dressed,because of irregularity,when doing the mortar to lay the blocks together,more may be used up (so cememnt and sand costs are higher). Also,look at the wastage - what you assumed was a lorry of 300ft of 9x9 actually gets chiselled down to abt 290 ft of 8.5 x 7.95 LOL...and I think a lot of wastage....machine dressed are easier on the eye..

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Kamaa
#3 Posted : Tuesday, October 06, 2009 12:09:00 PM
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Joined: 10/6/2007
Posts: 1,177
Location: Nairobi - Kenya
machine cut save on plastering...

coz it is not bumpy...

though they are 1 feet long and could mean there are so many joints....

When you run so fast to get somewhere,you miss the fun of getting there... Life is not a race,so take it slowly....
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murenj
#4 Posted : Tuesday, October 06, 2009 1:00:00 PM
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Joined: 7/22/2008
Posts: 851
Location: nairobi
So what is the average price per stone?

Muthonwa a Agikuyu
simonkabz
#5 Posted : Tuesday, October 06, 2009 3:09:00 PM
Rank: Elder


Joined: 3/2/2007
Posts: 8,776
Location: Cameroon
@murenj,give us ua location/intended source. At juja,the rejects(slightly damaged) go 4 less than 15 bob,gud ones about 30 bob. Hand dressed ones go 4 less than 15 bob. There woz a thread here on cost cutting measures n it was the best. Dig it up n read it.

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bamkubwa
#6 Posted : Tuesday, October 06, 2009 3:40:00 PM
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Joined: 10/6/2009
Posts: 14
But machine cut are abit expensive though you save on Plasta and building using them is fast.

Also you can get machine Cut rejects which are poor quality and mostly used to partition the rooms also can be used for bulding commercial houses then give it a good finish the owner won't suspect.

Hand Chiseled blocks are strong but on plastering you will have to use alot of plaster. Also before buliding you will have to hire Fundis to Chisel the stones.
Kaigangio
#7 Posted : Tuesday, October 06, 2009 3:50:00 PM
Rank: Elder


Joined: 2/27/2007
Posts: 2,768
@ murenj

It would be advisable to use the manually dressed stones on the external walls of the building if it is your home that you are constructing...the manually dressed stones are aesthetically more beautiful because of the uneven lengths,you can mix other desired stone colours and you can shape them anyway you like. the machine dressed you can use them in the internal walls where they will be plastered anyway....in small scale say for a 4 bedroomed bungalow or maisonnete there may not be any cost difference between the machine and manually dressed stones...

If you require stones for rentals go for the machine dressed

@ simonkabz,

the last time i used the manually dressed stones,i was buying them from Ruiru quarries at ksh10 per foot and the dressing was costing me ksh 3 per foot. at the same time the machine dressed was costing ksh 18...that was in 2004.

as of today i dont know how much the undressed stone is going for but the machine dressed is going for ksh 35 a foot excluding transportation in Juja quarries.



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kiuki
#8 Posted : Wednesday, October 07, 2009 9:21:00 AM
Rank: Member


Joined: 11/6/2007
Posts: 19
@murenj call MAHIGA ltd 0722140004 they are right on the highway.

and plse avoid ma-brokers wata-kuenjoy..had an experience with those idiots (and they are many),ask price for both quality and reject,you will note a big df in price but quality of stone is same. but you need a tour to get the real thing. another thing,kukinyesha demand & price shoots... mainly because the quarries off the highway are inaccessable.

All the best.


penye wazee hapaharibiki neno
wangura
#9 Posted : Wednesday, October 07, 2009 12:11:00 PM
Rank: Member


Joined: 2/24/2009
Posts: 29
Lessons i have learnt:
1. If you are buying a couple of trucks,always go to the quarry personally with a truck,chagua the stones you want (quality & price),negotiate and ensure all other stones are from the same quarry- You get the quality you want and at a good price
2.As someone said,avoid brokers,they are allover the quarry area. Dont even carry someone ati to show you directions. The moment the quarry owner/seller sees you accompanied by a broker,he/she will add the broker fee automatically to your price e.g. instead of 20 bob,akwamie 24 bob a piece
3. Hand dressed will consume more cement during construction and finishing but ideal for foundation since they are stronger. Make sure ukigongesha inalia kama shuma :)
4. The quarries close to the road maybe more expe since every newbie will buy from them since you can see them from the road
5.
dsgnplus
#10 Posted : Wednesday, October 07, 2009 2:35:00 PM
Rank: Member


Joined: 5/28/2009
Posts: 37
@djinn not waste,the chips can be used as filling. part of the material u need to buy is the quarry chips.

For outer walls go for manual,inner walls the machine cut. Machine cut are known to be very porous,and soft,the machines for cutting rock are always used where the rock is not that hard. The mawes that sound kama chuma are very hard,always manual cut i.e the machines cannot toboa with this rock,and are not as porous (think problems with dampness from inje.)
Guys correct me if i am wrong.
kiuki
#11 Posted : Thursday, October 08, 2009 7:46:00 AM
Rank: Member


Joined: 11/6/2007
Posts: 19
@dsgnplus,correction.. it does not always apply that machine cut are soft/porrous as such. while some will disintegrate if rained on others are tougher than even mannully cut. it depends on quarry and type of rock at a particular point and depth. thus the need for one to inspect before buying.

penye wazee hapaharibiki neno
fantony
#12 Posted : Thursday, October 08, 2009 11:39:00 AM
Rank: Member


Joined: 11/6/2006
Posts: 276
tell us what you need the stones for.... us techies more than that to form a decision...

load bearing or non load bearing au ama mawe ya kupika... jikoni...

we carried out some lab tests on several stones.... several varieties of machine cut were coming in at 9 N/mm2 that is techie language for you are better of with matope... in truth and as per the same laboratory tests stronger... lower impact to the environment...

the hydrafoam machine in the advert above makes an even better deal.... but again if you only needed three stones... for the kitchen... hydrafoam is not an option.... same case for only a residential unit....

Unajenga wapi... eastlands... kimbia Njiru....

thika road... ndarugo

a posh house... mix the colours throw a couple of yellow ones from rongai... but judging from your tone... you don't want to pay Consultants... you would have asked them that question... or you like working with those ones straight out of college... so your house is going to be non-functional anyway...
murenj
#13 Posted : Thursday, October 08, 2009 12:55:00 PM
Rank: Member


Joined: 7/22/2008
Posts: 851
Location: nairobi
@fantony,you are right about the consultant bit. My old man only needed an architect to draw plans for approval. After that..... I intend to put up two bedroom low cost houses for rental on kangundo road. ... Just flat on the ground. No storeys.

Muthonwa a Agikuyu
fantony
#14 Posted : Friday, October 09, 2009 6:16:00 AM
Rank: Member


Joined: 11/6/2006
Posts: 276
that is the name of the person who did your drawings... architects do more than that...
i.e. provide detail designs indicating the material... advise on the budget... supervise the design in implementation...

what you got is a scheme design... a couple of lines only to get you through council...

the problem with people like you is you are so predictable next time your post will be '...help my stones are getting stolen... can somebody advise me the name of a security company in eastlands...'

i don't know what you do for a living but say you are an accountant and you heard a layman indicate the way they are going to audit their own accounts.... or something else equally mundane...

there must be a reason those guys... architects... are locked up in college for 6 years... i am not even one of them but i work closely....
murenj
#15 Posted : Friday, October 09, 2009 9:18:00 AM
Rank: Member


Joined: 7/22/2008
Posts: 851
Location: nairobi
@fantony. Thanks man. I guess you have at one time bought drugs across the counter before consulting a doctor who has spent six years in campus..... But you did not post a thread that goes......help! i need a headache specialist for My hangover. . . :)

Muthonwa a Agikuyu
simonkabz
#16 Posted : Friday, October 09, 2009 10:11:00 AM
Rank: Elder


Joined: 3/2/2007
Posts: 8,776
Location: Cameroon
Doc vs architect...hmmm....

Can silence be misquoted?
TULIA.........UFUNZWE!
mwenza
#17 Posted : Friday, October 09, 2009 11:43:00 AM
Rank: Elder


Joined: 4/22/2009
Posts: 2,863
Its annoying how building consultants are falling over each other trying to get PJ's through this forum...............................Think of the other thread on 'Architectural services' where guys were advertising themselves even when the person who posted it was not responding.



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kenyanbeef
#18 Posted : Friday, October 09, 2009 3:42:00 PM
Rank: Member


Joined: 7/24/2009
Posts: 273
@simonkabz n others,anyone who can assist with the link to that thread. I have tried several words that could be in the topic without success and since I didnt read it...cheers and have a sufficiently philanthropic and charitable enough Moi DAY!
simonkabz
#19 Posted : Friday, October 09, 2009 4:09:00 PM
Rank: Elder


Joined: 3/2/2007
Posts: 8,776
Location: Cameroon
@beef,im now on my 4th summit,cnt recall a damn thing.

Can silence be misquoted?
TULIA.........UFUNZWE!
tmatekwa
#20 Posted : Saturday, October 10, 2009 3:09:00 AM
Rank: Member


Joined: 10/1/2007
Posts: 232
common @ simonkabz. we need that thread. Also on this hydraform brick making machine from makiga,what has other people experienced?

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