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Saturday, November 7th, 2009

Points to Check before buying a plot.

1. Encumbrances. Check with the Ministry of Lands if there are any Caveats put on the plot.

2. Ascertain ownership.
Check with the Ministry of Lands who is the registered owner of the land. Its also prudent to check with the neighbors to get the physical appearance and current contacts of the owner.
In Kenya, there has been incidences where people steal the identity of the real land owner and sell to unsuspecting customers. By confirming the owner from the neighbors, this will reduce such a risk.

3. Ability to appreciate in Value.
Most land appreciates in value. The prospect of new infrastructure will play a big role in increasing the value of the land.
Currently, land in Juja, Thika, Kenya is appreciating very fast due to the construction of Thika road into a several-lane highway and construction of a by-pass on the behind side of Juja. There is also the fact that Wilson airport is planning to relocate to this area.
Land in Kitengela, Athi River and Syokimau is also appreciating very fast with the completion of Mombasa road Highway.

4. Check with the Meteorological department.
Check to see if the land sits on a wetland. Some land can be actually on a dried up seasonal river , lake or swamp. If you are not careful, once the rains start, the whole plot gets submerged or the building gets swept by the river floods.
Areas such as Runda and Membley estate, Thika road are prone to such plots. With a good structural design, the building can be raised with collumns to a level above the flood water level.

5. Check the soil type.
If you are planning to build a house, foundations with black cotton soil are more expensive since all the soil has to be excavated from the site. This is due to the fact that black cotton soil expands when it rains hence pushing the floor slab and foundation up. It then shrinks when it dries hence pulling the floor slab down.This expansion and contraction results in structural cracks.

If the black cotton soil is more than 1.5 meters deep, it becomes too expensive to excavate it. A good solution is to use the suspended foundation where collumns are sunk and footed at stable ground. The collumns are raised till just above ground level then the ground floor suspended on the columns. This reduces the excavation to only at the collumns.

Red soil is more stable so foundations can be laid on stable excavated ground 1.5 meters deep.

Areas with volcanic soils such as Nakuru will require a different type of foundation called a raft foundation for high-rise construction. Once the soil is excavated, a concrete slab is laid on the bottom and collumns emanate from there. This creates a very stable foundation to support the building.

Frank Gichuhi
www.prismafrica.com

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Friday, November 6th, 2009

Manufactured boards are boards made from wood products such as ply wood, chip board and Medium Desity Fibre[MDF] board.

They usually come in a standard size of 4 feet by 8 feet.

Due to the scarcity of wood products, MDF boards have become common and are a good replacement to plywood, chipboard and blockboard.

MD boards are made by glueing wood fibres under intense heat and pressure.

The strength of the board is measured by the screwing strength of the section in Newtons. The average screwing strength is around 750-1000N.

The glue used is fomaldehyde based .
Research shows that formaldehyde causes various side effects to humans.
Check out this link
This has resulted to the grading of MDF in terms of formaldehyde level, E0 being the lowest and E4 the highest. Most MDF boards on sale in Kenya and around the world contain EI and E2 formaldehyde levels .

MDF boards are sold with or without the laminate. The laminate can be on one side or both sides. The laminate is finished smooth to various natural wood finishes such as peach, oak, teak and mahogany.

The strength of the MDF is directly proportional to its thickness, density and internal glue bond.
Most MDF is manufactured in thickness of between 8 mm to 20mm. The mdf laminate skins are usually 2mm thick.

For furniture use which is not structural i.e does not support alot of weight such as wardrobe door, 12mm MDF both sides veneered is recommended. For Furniture that supports heavy weights such as tables, doors, 16 to 20mm MDF boards thicknesses are recommended. Once your architect has information of the design and preferred uses for the boards, he will be in a position to advise you accordingly.
The thickness is also important if the MDF board is going to be grooved. If a groove is to be engraved, MDF of 12 mm and above is recommended.

Frank Gichuhi
www.prismafrica.com
Nairobi, Kenya.

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