1.What are the most common building materials used in Kenya?

For walls, we have machine cut quarry stones and cement.
For roofs, we have gauge 30 and gauge 32 steel roofing sheets,concrete and clay tiles and stone
coated steel roofing tiles.
For windows, we have steel casement frames with glass infill. Aluminium framing is also increasingly becoming common.
For doors, we have timber doors on wooden frames for internal doors. For external doors we have steel doors on steel frames and
hardwood doors on hardwood frames.
For internal finishes, we have cement plaster and paint.
For ceilings, we have chipboard, uPVC/ Gypsum
2.What causes buildings to collapse with reference to building materials?

Collapsing of buildings is usually a structural integrity issue. Structural integrity has the building materials and labour/engineering consultancy aspect.
Building can collapse if the labour and or
engineering consultancy is not certified to offer such service hence poor quality.
Buildings can collapse also if the materials used , mainly cement, sand, ballast and steel, are not of the specified quality.
In case of cement, the cement could be weak, hence not strong enough
when contractors use the usual mix ratios to make the building structure.

In case of sand, the sand could be flaky, as in the case of the dark Naivasha sand, hence not offering the much needed grip as in the case of the granulated yellow river sand.
In the case of ballast, the
size could be too big to offer the much needed ratio strength.
In the case of steel, the quality of steel may be too malleable or too brittle, hence not offering the needed strength requirements.
All these are to be checked by registered structural engineers and Kenya Bureau of
Standards, in the case of cement and steel, which require tests to ascertain quality.

Most cement sold in Kenya has the mark of 32.5 Kn/mm2 as the strength. Its up to Kenya Bureau of Standards to carry out random periodic test strengths to ensure these companies actually sell
cement of the said strength.

In the case of steel, I have never seen any tests done by Kenya Bureau of Standards or if KBS have ever carried or do carry out random periodic steel malleability tests, they don’t advertise to the public. Same case with cement strength. In this case
, the public will therefore need to carry out their private tests to confirm this,or KBS carries these tests out publicly for all the public to see and benefit.
In my hands on experience on day to day workings with structural steel, I come across some steel which is too brittle
and breaks easily when fundis are working on it .
3.How do local building materials promote the structure of a building?

Some local building materials, eg quarry stone is structurally strong, hence increasing the structural strength of the building.
4.What types of local building materials can be used for construction?

Local building materials are machine cut masonry stone, timber doors, clay roofing tiles, locally manufactured paints, locally manufactured ceramic and concrete wall and floor tiles, locally manufactured
ceiling boards etc…

5.Why are local building materials not often used in Kenya?

In some instances, some people believe imported materials , which tend to be more expensive due to high cost of shipping and high tax, are better quality. For example, stone coated roofing sheets
are imported from America, Europe ans Asia into Kenya. These are imitations of clay roof tiles. These costs kes 2000 per m2 while natural clay tiles cost kes 600 per m2. The reason for the high cost is because of import tax, high transport costs and cost of factory manufacturing.
This high cost is not necessarily a translation of higher quality.

Another example is mazeras slate stone compared to ceramic tile look alike. Mazeras slate stone is better quality at a much lower cost. An immitation of this sells for twice as much as the real tile since some
people tend to equate quality with price.

Mazeras tile imitation.
6.What are the advantages and disadvantages of using local materials for building

Advantages of using local materials is that they cost less, are of higher quality and help to improve economy and create jobs.
Disadvantages are that in some instances, some clients are willing to
pay high rents or buy apartment units only if buildings are made of imported materials such as mdf boards, textured paints etc. hence imported materials results to higher rents.
7.Are local building materials expensive to obtain?

Local building materials are not expensive to obtain.For example, cost of steel Structural Insulated Panels SIP used to construct prefab units is the cheapest from of housing in China.

For this cheapest method of constructing
in China to be brought to Kenya, if you add the cost of shipping, import duty and transport/storage to Nairobi, the SIP prefab panels will actually be more expensive than local masonry stone.
This means that the local materials for a particular region are only cheap if used there
. If transported to another region, they cease to become cheap.

Good luck with your Construction 🚧

• • •

Missing some Tweet in this thread? You can try to force a refresh

Keep Current with 𝐄𝐧𝐠 𝐌𝐨𝐧𝐝𝐚 𝐌𝐚𝐤𝐨𝐫𝐢🇰🇪

𝐄𝐧𝐠 𝐌𝐨𝐧𝐝𝐚 𝐌𝐚𝐤𝐨𝐫𝐢🇰🇪 Profile picture

Stay in touch and get notified when new unrolls are available from this author!

Read all threads

This Thread may be Removed Anytime!


Twitter may remove this content at anytime! Save it as PDF for later use!

Try unrolling a thread yourself!

how to unroll video
  1. Follow @ThreadReaderApp to mention us!

  2. From a Twitter thread mention us with a keyword "unroll"
@threadreaderapp unroll

Practice here first or read more on our help page!

More from @Engmondamakori

10 Oct

When it comes to construction management, it starts with an understanding of the project design, construction planning, execution process, along with the effective use of resources. Considering the definition of Image
Project Management Institute, construction project management is defined as the coordination between human and material resources that helps to achieve the defined construction goals while driving the goals related to cost, time, scope, and quality.
Even though the introduction of modern tools and technology has made the process quite simplified, the effectiveness of construction project management is the only thing that defines the potential of a construction firm. In other words, effective construction management .
Read 19 tweets
6 Oct

Cost, aesthetics, practicality and longevity. These are some of the things to consider when choosing building materials for your new construction or renovation
Here are 7 questions to ask when choosing building materials:
1. How Much Does It Cost?

Unless you have a limitless building budget, choose materials priced within your means without compromising too much on quality. Natural stone siding is the most expensive residential exterior building material, but it’s also one of the most durable.
When properly installed, stone siding can last more than 100 years. Make sure the materials you choose strike the right balance between price and longevity.
Read 9 tweets
6 Oct

There is so much to think about when you’re building a new home. From layout to design finishes and everything in between, the features you put into your custom build home will be with you for years to come. And it’s an
opportunity to get really creative and put in some unique features that you might not be able to find if you were buying a preowned house.

Below, I’ve compiled some of our favorite features to consider when building a new home—some of them focused on maximizing your investment,
others are geared toward creating a truly personal and original space. So whether you’re about to start building a new home or are curious about what kinds of features you could put into it, read on for 14 of our top new construction feature ideas.
Read 28 tweets
6 Oct

One of the most frequently asked questions by homeowners in regard to solar power is, “can it really power my entire house?” The answer to that is actually quite simple – yes, solar can indeed power your entire home
With the sun delivering an awe-inspiring amount of energy to the earth on an almost hourly basis, it stands to reason that solar energy can indeed power an entire home. Let’s take a deep dive into how exactly this happens and how you can make estimated solar calculations at home.
How Can Solar Energy Power Your Whole Compound?

So, can a home solar system really power your entire house? As we’ve stated, yes! But, it does depend on a few variables that you’ll want to take into consideration when deciding to go solar. Mostly, these variables are used to
Read 20 tweets
4 Oct

First off, we acknowledge that there are many construction professionals and contractors who’ve proven to be honest and committed. And that we have seen genuine ones.

Unfortunately, it just so happens that
there are more dishonest individuals than genuine contractors in the construction industry. As a result, developers & individuals typically lose more than 30% of their project expenditure to swindlers.
Believe it or not if newly-constructed buildings in Kenya were adequately
were adequately appraised, most of the material values would fall short of their initial budget estimates.

Well, of course, some might blame the weather, inflation, taxes, and so forth. But, as we’ve established from multiple projects- most of these excuses are conveniently used
Read 54 tweets
4 Oct

With the cost of construction rising by the day, it’s crucial to look for more affordable and effective construction methods. Recent developments have seen structural engineers turning to one such improvement:
waffle pod slabs.

Waffle pods are seen as a ‘clever’ approach to assist with modern-day construction. The cleverness comes via the use of expanded polystyrene materials which are both lightweight and simple to handle.

Beyond being less labour-intensive, there are many
advantages of waffle pods.

**Benefits of Using Waffle Pod Slabs**

1. They Are Cost-Effective
These slabs are cost-effective in terms of preparation and during the building process. Their lightweight nature eliminates the cost of labour-intensive trenching. The preparation
Read 14 tweets

Did Thread Reader help you today?

Support us! We are indie developers!

This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3/month or $30/year) and get exclusive features!

Become Premium

Too expensive? Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal Become our Patreon

Thank you for your support!

Follow Us on Twitter!