MASONRY WALL FENCING.

MASONRY WALL FENCING.

Wall height can vary between a minimum of 2.1 meters to a maximum of 2.8 m high.
Wall finishes can vary between low cost, middle cost and high cost finishes.
LOW COST WALL FINISHES.
This is a wall that comprises of masonry stone walling, machine cut dressed, without any pattern. This is done without a coping at the top and without any keying.
A square meter of masonry walling is estimated at KES 800 . This cost is derived as follows:
The cost of a machine cut stone delivered around Nairobi is KES 55. A meter squared has 13 stones.
This totals to KES 715. Add 10% for labour and joining cement mortar. This brings to approximately KES 800 per m2.
A good example is the walling commonly seen in low income areas such as Dandora and Kayole.
MIDDLE COST FINISHES.
This characterizes a wall that is made up of masonry machine cut or hand dressed stone, laid carefully with impressive workmanship. It comprises keying and masonry coping at the top. A touch of pattern is also included such as alternating stones of a different colour.
A good example is the walling commonly seen around Kitengela, Ngong and Ongata Rongai areas.
This is estimated at KES 1200 per m2.
HIGH COST FINISHES.
This comprises of hand-dressed masonry walling that is carefully patterned. Designs such as zero-jointing characterize this finish. Intricate indented patterns are also common with this type of finish.
A good example is the masonry walling located opposite Gertrude Children’s hospital in Muthaiga.
This is estimated at KES 2000 per m2.
FOUNDATION.
The average depth of a wall foundation is 1 m . This varies from region to region depending on how deed the stable ground is. Some grounds will only require a few centimeters of depth while others require many meters.
The foundation can be constructed using Reinforced Concrete base. This is expensive since the price of cement and steel is high.
I have developed a method whereby the Reinforced concrete is substituted with two layers of masonry walling laid across each other. This saves costs.
WALL SUPPORT.
Every 3 meters should be braced with either masonry walling or Reinforced concrete columns.
Masonry walling offers a more cost-effective option as a support.
Fence height:[m] 2.8

1 m deep foundation
Total wall height: 3.8

Surface area[m2] 1219

low cost finishes 975,200.00

middle cost finishes 1,462,800.00

high cost finishes 2,438,000.00

Fence height:[m] 2.1

1 m deep foundation
Total wall height: 3.1

Surface area[m2] 993

low cost finishes 794,400.00

middle cost finishes 1,191,600.00

high cost finishes 1,986,000.00

Architect Francis Gichuhi Kamau
info@a4architect.com
+254721410684

Francis Gichuhi (692 Posts)

Architect Francis Gichuhi . B.Arch. University of Nairobi. Registered Architect, Kenya. Member, Architectural Association of Kenya. Contacts. email info@a4architect.com. Telephone +254721410684


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  3 comments for “MASONRY WALL FENCING.

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  2. john
    June 16, 2015 at 9:11 am

    hi, very insightful information on the masonry wall. Have a quarter of an acre plot with following dimensions…31.7m by 31.7m by 33m by 30m and would like to construct awll fence using interlocking blocks. My contracter gave an estimate of 140 bags of cement if using stone cut blocks(5800 in number for a 2.1m high wall). I would how much cement and chuma will be required for this project(estimate of 8465 blocks for 2.4m) and is it cheaper……thanks

  3. Richard
    April 21, 2016 at 6:54 am

    Hi Francis
    What would be the cost of constructing a masonry wall fence on a 50*100ft plot at Kitengela

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