NLresidentQS:
Please is anyone familiar with road construction here?

I've seen concrete roads and asphalt roads..but in the estate here...they did a concrete (with y6 mat)...now they are putting prime coat, the foreman is saying they will put geotextile next (asphaltic Reinforcement)... Then we pave with asphalt finally..

Kindly Enlighten.

That should be a 'composite pavement'. There are 3 types of road pavement -
1. Rigid pavement - made of concrete
2. Flexible pavement - made of crushed rock, stone base materials as sub-base & base course AND asphaltic & bituminous materials as wearing course.
3. Composite pavement - a mixture of 1 & 2 above. Now there is no hard and fast rule to the mixture, it all depends on the design. The roadway of the bridges I have seen are made of concrete but topped with asphalt or bitumen as wearing course because of its smooth driving characteristics when compared to concrete or interlocking paving stones.

44chux:


Don't even think about that.
For starters he has bragged that he won't accept any job beyond 20km from his lagos office



But most importantly, if he accepts, he'll just source it out to locals in the area and expect to supervise them through the internet.
Check out the issues with his PH project.

Not to mention that the prayer stone loses potency during transit

And the white truck won't be available to move clients materials over night

NLresidentQS:


Great Engineer,

Your reply is epic as usual. The roads in the estate are constructed before work begins on the houses...so there is little or no obstruction to traffic. Meanwhile the concrete base layer is cast in intervals with expansion joints.

My question remain at large.:

Combining concrete-asphalt (subgrade-concrete base-asphalt wearing course).... Does it have any strength/cost advantage to using either exclusive concrete or exclusive flexible pavement?

A flexible wearing course makes for smoother driving than a concrete or interlocking one. If you have driven on an interlocking pavement road before, you'll understand what I am saying. There are quite a number of them in Victoria Island & Oniru here in Lagos.

On the issue of cost, an interlocking pavement road is cheaper than both full concrete roads and flexible pavement (asphalt) roads. So if cost is a more important issue than drivability and durability, interlocking pavement roads are the way to go.
In terms of durability, concrete roads are better.

ugo99:
what is your email and do you work in the East as I want to start work on my land there.

Unfortunately, I've set my boundary and I'm determined to stay by the rules no matter how difficult it seems.

There are verified field experts here who can attend to your request on a fly.



________
44chux, my nigga.

44chux:


Don't even think about that.
For starters he has bragged that he won't accept any job beyond 20km from his lagos office



But most importantly, if he accepts, he'll just source it out to locals in the area and expect to supervise them through the internet.
Check out the issues with his PH project.

I remain committed to the cause for a good reason. Watch new things unfolding.

When you continue to wail and no one cares anymore

What do you mean by stones and truck
He appears to be knowleageable in the construction field

Happykay:


Not to mention that the prayer stone loses potency during transit

And the white truck won't be available to move clients materials over night

Ok

n3xt:


Unfortunately, I've set my boundary and I'm determined to stay by the rules no matter how difficult it seems.

There are verified field experts here who can attend to your request on a fly.



________
44chux, my nigga.

[quote author=itswell1 post=48413391][/quote]

[Oga spyder am looking forward to your kind response to maverick questions. In additional please there is a phrase you used, returning the mat? What does it mean?]

When I say the mat, I mean the mesh of 12mm rods spread on the wooden platform to create the decking slab mid reinforcement.

Let me use this picture from our last decking job last week to illustrate........

https://www.nairaland.com/3052762/building-12-flats-mini-estate/4

ugo99:
Ok

Thanks for your understanding.

ugo99:
What do you mean by stones and truck
He appears to be knowleageable in the construction field

Hmm! I'm just here for idea exchange. To some I'm here to use up my free internet data.

mavverick:
Oga spyder880

More grease to your elbow, I have copied everything you said inside my notebook. Maybe one day Bosun can come and learn.

85 decking slabs under your belt, no complaints whatsoever. I am sure we can all take something away from that.

spyder880, this last decking I do not see any plumbing pipes shooting out. Is there any reason for that ?

the concrete biscuits, is it something that is charged for separately ?

Sir, there were no plumbing pipes coming up from the decking because this work is going to be done with external plumbing system, no internal conduit pipes. When we do external piping, we don't bury any pipes in the concrete, we work ahead and place the pipes towards the end of the project.

As for the concrete biscuits, we bake them as part of the decking cost, it does not cost extra. In Enugu where we have large lump stones, I use the stones to support the mat, instead of the concrete biscuits.

Picture below shows a concrete biscuit we 'baked' in one of our jobs in Port Harcourt in 2014.

https://www.nairaland.com/1790503/decking-block-flats-port-harcourt/1

NLresidentQS:


Great Engineer,

Your reply is epic as usual. The roads in the estate are constructed before work begins on the houses...so there is little or no obstruction to traffic. Meanwhile the concrete base layer is cast in intervals with expansion joints.

My question remain at large.:

Combining concrete-asphalt (subgrade-concrete base-asphalt wearing course).... Does it have any strength/cost advantage to using either exclusive concrete or exclusive flexible pavement?

Just coming back from the hospital.... Seriously down with malaria.

Combination of concrete base and asphaltic wearing course is known as semi rigid /flexible pavement. It has its own advantage and can be more expensive than the other two.

I am not an expert in Highway engineering but most road problem result from lack of proper compaction of the subgrade, inadequate thickness of base and wearing course. These problem result from lack of proper traffic analysis which will give the designer the expected traffic that the way will carry.

Exclusive reinforced concrete is more expensive than exclusive flexible pavement but maintenence us cheaper

abdulwastecx:


Just coming back from the hospital.... Seriously down with malaria.

Combination of concrete base and asphaltic wearing course is known as semi rigid /flexible pavement. It has its own advantage and can be more expensive than the other two.

I am not an expert in Highway engineering but most road problem result from lack of proper compaction of the subgrade, inadequate thickness of base and wearing course. These problem result from lack of proper traffic analysis which will give the designer the expected traffic that the way will carry.

Exclusive reinforced concrete is more expensive than exclusive flexible pavement but maintenence us cheaper

Sorry bro, you need to knock a couple of days off, just relax from your busy schedule. You will be back and stronger too. Keep educating us my man.

abdulwastecx:


Just coming back from the hospital.... Seriously down with malaria.

Combination of concrete base and asphaltic wearing course is known as semi rigid /flexible pavement. It has its own advantage and can be more expensive than the other two.

I am not an expert in Highway engineering but most road problem result from lack of proper compaction of the subgrade, inadequate thickness of base and wearing course. These problem result from lack of proper traffic analysis which will give the designer the expected traffic that the way will carry.

Exclusive reinforced concrete is more expensive than exclusive flexible pavement but maintenence us cheaper

So sorry Abdulwastecx, may the Lord grant you speedy recovery and divine healing, Amen!

ugo99:
What do you mean by stones and truck
He appears to be knowleageable in the construction field

Search for ile oluji building the Chateau n start reading from page 31 upwards. For a start n you will be reachly blessed.
I am also an engineer and can build anything, A trial will convince me

ugo99:
What do you mean by stones and truck
He appears to be knowleageable in the construction field

Search for ile oluji building the Chateau n start reading from page 31 upwards. For a start n you will be reachly blessed.
I am also an engineer and can build anything, A trial will convince me

olumide4christ:


So sorry Abdulwastecx, may the Lord grant you speedy recovery and divine healing, Amen!

Thank you sir

olumide4christ:


That should be a 'composite pavement'. There are 3 types of road pavement -
1. Rigid pavement - made of concrete
2. Flexible pavement - made of crushed rock, stone base materials as sub-base & base course AND asphaltic & bituminous materials as wearing course.
3. Composite pavement - a mixture of 1 & 2 above. Now there is no hard and fast rule to the mixture, it all depends on the design. The roadway of the bridges I have seen are made of concrete but topped with asphalt or bitumen as wearing course because of its smooth driving characteristics when compared to concrete or interlocking paving stones.

Appreciated Sir.

spyder880:


[Oga spyder am looking forward to your kind response to maverick questions. In additional please there is a phrase you used, returning the mat? What does it mean?]

When I say the mat, I mean the mesh of 12mm rods spread on the wooden platform to create the decking slab mid reinforcement.

Let me use this picture from our last decking job last week to illustrate........

https://www.nairaland.com/3052762/building-12-flats-mini-estate/4

Thanks our reliable, dependable, honest, peace full, industrious professor emeritus here. I enjoy your post and abdulwastecx here, you guys are very patient, practical and realistic always willing to share your knowledge. God bless you and the honest Builders real good

abdulwastecx:


Just coming back from the hospital.... Seriously down with malaria.

Combination of concrete base and asphaltic wearing course is known as semi rigid /flexible pavement. It has its own advantage and can be more expensive than the other two.

I am not an expert in Highway engineering but most road problem result from lack of proper compaction of the subgrade, inadequate thickness of base and wearing course. These problem result from lack of proper traffic analysis which will give the designer the expected traffic that the way will carry.

Exclusive reinforced concrete is more expensive than exclusive flexible pavement but maintenence us cheaper

Thanks for the clarification bro. Gotta hunt down an highway engineer!

May the good Lord grant you a speedy recovery. Ameen.

Thanks a lot too @olumide4christ

spyder880:


Sir, there were no plumbing pipes coming up from the decking because this work is going to be done with external plumbing system, no internal conduit pipes. When we do external piping, we don't bury any pipes in the concrete, we work ahead and place the pipes towards the end of the project.

As for the concrete biscuits, we bake them as part of the decking cost, it does not cost extra. In Enugu where we have large lump stones, I use the stones to support the mat, instead of the concrete biscuits.

Picture below shows a concrete biscuit we 'baked' in one of our jobs in Port Harcourt in 2014.

https://www.nairaland.com/1790503/decking-block-flats-port-harcourt/1

Just thinking, can paving stones be used in place of concrete biscuit?

I just searched on the website, and I see https://www.nairaland.com/1338637/chateau-ile-oluji-construction-journal
The username of the builder is differernt so am not sure what you are talking about

itswell1:

Search for ile oluji building the Chateau n start reading from page 31 upwards. For a start n you will be reachly blessed.
I am also an engineer and can build anything, A trial will convince me
Search for ile oluji building the Chateau n start reading from page 31 upwards. For a start n you will be reachly blessed.
I am also an engineer and can build anything, A trial will convince me

get well soon. you also appear to be knowleageable contractor and i think you are based in the north

abdulwastecx:


Just coming back from the hospital.... Seriously down with malaria.

Combination of concrete base and asphaltic wearing course is known as semi rigid /flexible pavement. It has its own advantage and can be more expensive than the other two.

I am not an expert in Highway engineering but most road problem result from lack of proper compaction of the subgrade, inadequate thickness of base and wearing course. These problem result from lack of proper traffic analysis which will give the designer the expected traffic that the way will carry.

Exclusive reinforced concrete is more expensive than exclusive flexible pavement but maintenence us cheaper

ugo99:
I just searched on the website, and I see https://www.nairaland.com/1338637/chateau-ile-oluji-construction-journal
The username of the builder is differernt so am not sure what you are talking about

Sir ugo99, let me do the introduction. I am Brabus the owner of NextHome Design+Build, Suite H52, Ikota Shopping Complex, off Lekki/Epe Expressway, Lagos.

My other IDs on Nairaland are n3xt, BrabusNG and NextHome.

Hope that clears the air.

God Bless!

olumide4christ:


A flexible wearing course makes for smoother driving than a concrete or interlocking one. If you have driven on an interlocking pavement road before, you'll understand what I am saying. There are quite a number of them in Victoria Island & Oniru here in Lagos.

On the issue of cost, an interlocking pavement road is cheaper than both full concrete roads and flexible pavement (asphalt) roads. So if cost is a more important issue than drivability and durability, interlocking pavement roads are the way to go.
In terms of durability, concrete roads are better.

Concrete road is more expensive, highly technical but extremely durable with an antiwearing bitumen course on it. more cumbersome and expensive to repair so anti wear is adviced as we have on bridges like 3rd mainland and the.long bridge Julius Berger i s repairing along Lagos Ibadan express way. they are just removing the bitumen to relay a new course for a smoother driving experience but the concrete pave still remain intact.
below is d pics of a reinforced concrete road i just delivered with NFL cast iron grating cover on the centre drain.

abdulwastecx:


I always argue this with my father, Nigeria has never been a first world or even a second world nation. We have always have majority of our population living in rural areas, well cut off from these infrastructure.

Those days, fewer people had access to most of these infrastructure because a larger percentage of the population lives in the rural areas, the government do so little to expand these infrastructure to other areas to benefit the masses.

Between 1900 to 1960 Nigeria only have a small narrow guage rail linking kano to Lagos and another small one running from the east to the maiduguri.
We have fewer road, no serious water works etc.

The problem is Nigeria as a state has never been great, we have massive population growing at a very alarming rate, serious desert encroachment in the north, a government that will rather subside for religious pilgrimage than education or heath care.

I am always furious and angry if people belive we have the resources to build a good nation. We are a broke as nation with lots of low IQ people that will rather kill for superstitions than finding solutions to their problem

We have the people (though there's dearth of skillful and smart managers. They've all travelled abroad). We have the resources (heavily mismanaged). Our major problem is the system of approach. Our laws, codes, statutes and even curriculums needs reform and good review. We need good policies that will encourage PPPs.

We need to cut the red-tapes and make every dept of government run systematically (automated). We need to replace norms and conventions with modern practices.

We need core experts and not uselessly opinionated professionals.

Just so you may know, we need a better land use policy. The way we build is no different from the way they build in the Stone Age. This is 2016. Modern cities build condos, mixed use apartments/complexes and high rise buildings in order to address a lot of issues.

We need a new direction (a new script) and not change of directors. Government in, government out - the script remains the same.

_______
Get well soon my able engineer abdulwastecx!!

I notice that you didnt include eradicating forgery, theft, disregard of standards and quack building methods

Nigeria does not consist of just the government, it starts from the people, remember the government is made up of people. ITS QUACKS/THIEVES LIKE YOU WHO ARE THE BIGGEST PROBLEM, AND THE LIKES THAT NEEDS TO BE ERADICATED/CHANGED FIRST.

God knows what will happen if you were made a state governor, or hell not you become president of the Federal Republic of Nigeria.

n3xt:


We have the people (though there's dearth of skillful and smart managers. They've all travelled abroad). We have the resources (heavily mismanaged). Our major problem is the system of approach. Our laws, codes, statutes and even curriculums needs reform and good review. We need good policies that will encourage PPPs.

We need to cut the red-tapes and make every dept of government run systematically (automated). We need to replace norms and conventions with modern practices.

We need core experts and not uselessly opinionated professionals.

Just so you may know, we need a better land use policy. The way we build is no different from the way they build in the Stone Age. This is 2016. Modern cities build condos, mixed use apartments/complexes and high rise buildings in order to address a lot of issues.

We need a new direction (a new script) and not change of directors. Government in, government out - the script remains the same.

_______
Get well soon my able engineer abdulwastecx!!

[size=20pt]So even after I instructed Bosun of N3xt home to use step-tile aluminum for my project, he said ok and still went ahead in using some cheap a55 longspan with steptile design on it. Also We later discovered that the sheet didn't overlap well as it was supposed to because they cut corner with that too. these were the reason the roof was leaking.

Bosun shoyeye aka Brabus N3xt of Next home is a fraud believe me. My 11m naira passed through him so I know what am talking about.

Dealing with Bosun left a bitter taste in our mouth.

We have moved on now. imagine after 1 year we still they correct Bosun's mistakes...

Dont get carried away with pictures folks....You deal with him, you will get your fingers burnt.[/size]

itswell1:

Just thinking, can paving stones be used in place of concrete biscuit?

Technically yes but it'll be ridiculously heavy.

We're using plastic standoff here and even reducing use of wire ties.

ugo99:
I just searched on the website, and I see https://www.nairaland.com/1338637/chateau-ile-oluji-construction-journal
The username of the builder is differernt so am not sure what you are talking about

Hmmmmmm.....that's an outstandingly fast search

As for me, the credibility of userids on here has been forever tarnished.

I now do research before I engage any unknown userid in a conversation.

It's a damn terrible shame.

EgunMogaji:


Technically yes but it'll be ridiculously heavy.

We're using plastic standoff here and even reducing use of wire ties.

In a book Standard method of detailing strucutral concrete published by the Institute of structural Engineers, they specifically recommended concrete spacers or plastic spacers. Even morter or insitu concrete spacers are prohibited.
Its difficult to maintain standards in Nigeria, most people dont even know the functions of spacers, besides plastic nor concrete spacers are not very popular in Nigeria or even sold.

Longspan with Step Tiles design on it.

Interesting!

Who plaster a house on a newly installed roofing sheet? Who erect scaffold on a roof?

May God punish insanity.