Need a Civil Engineer to work for your Company, building construction and services.
Contact me @ Email :dilyschigo@gmail.com
Phone number :08066139769.
* I design and build houses, Set out project works in accordance with drawing and specification
* Supervised Building Works, and Services
Block work erection,Wall rendering, Foundation works Casting of the structural members
* Drainage works , Placing of interlocking stones(paving stones), Wall tiles and keb stones.
* Conduct on-site investigations and analyze data
* Manage, design, develop, create and maintain small-scale through to large-scale construction projects in a safe, timely and sustainable manner
A site will convince you.

Residential building

Foundation work (Sub structure work)

Wao, guess this is nairaland's first female engineer. Thumbs up.

stancydg:
Wao, guess this is nairaland's first female engineer. Thumbs up.

. Thank you so much

Noted

In building, Drainage is a critical part of the construction project. It is a channel through which waste water can be drain away from buildings quickly and safely. It also eliminate the risk of flooding and health issues that can present significant risk to people and property.
WHAT ARE THE FACTORS TO CONSIDER BEFORE CONSTRUCTING A DRAINAGE?
* The flow rate calculation of water passing through the Drainage need to be considered before design stage. Sometimes this is overlooked and it results to under or over specification of drainage and compromises during construction stage .
* The sloping of the Drainage need to be considered before the design stage to ensure easy flow /run off of water.
* Depth of the Drainage need to be considered too because of road construction.
MORE CONTRIBUTIONS PLEASE

Are there standard dimensions for the estimated flow rates expected? Please educate us more.

What could be the cause of this building collapse? Happened in Enugu. For me i will say
* That loads were not properly distributed
* load too much on Foundation due to poor design
* The spanning was too long & need the introduction of columns so indeaquate columns
* poor quality materials were used & also the strength of the concrete mix used should be checked ( trying to cut costs)

stancydg:
Are there standard dimensions for the estimated flow rates expected? Please educate us more.

. Depending on the area you want to construct the Drainage especially Drainage for highways, there is an office in charge of collecting data for the run off(flow) on that particular area which was done through a frequency analysis for a particular life time the Road can last like 25 yrs etc & the peak flow was determined from the frequency collection. So the designer can now go to the office in charge & collect the data for the area he is working on.

Dilyschigo:
. Depending on the area you want to construct the Drainage especially Drainage for highways, there is an office in charge of collecting data for the run off(flow) on that particular area which was done through a frequency analysis for a particular life time the Road can last like 25 yrs etc & the peak flow was determined from the frequency collection. So the designer can now go to the office in charge & collect the data for the area he is working on.

Oh I see. That's enlightening. Data for different locations may vary I guess?

Dilyschigo:
What could be the cause of this building collapse? Happened in Enugu. For me i will say
* That loads were not properly distributed
* load too much on Foundation due to poor design
* The spanning was too long & need the introduction of columns so indeaquate columns
* poor quality materials were used & also the strength of the concrete mix used should be checked ( trying to cut costs)

I believe major factors would be ;

-Ratio and quality of concrete mix(most times, wrong mix ratios are used by so called experienced old hands, who probably learnt on other sites, without the academic background and applying same on a totally different site without considering prevailing factors. A few times they listen to professionals, the labourers pack sand alongside the granite, thereby diluting the mix unnecessarily.)

-Incorrect specifications of materials for structural members, such as iron rods. (Often times, wrong specifications are used even when quality materials are purchased) Span may not be a major issue if correct specifications are used. e.g if the architects design requires no distracting pillars, it will be the duty of the structural engineer to specify diameters that will work. Audacious projects such as winners chapel otta has proved this point.

- Inadequate curing time for concrete casts, such as columns, beams and the decking. (Most folks just continue building the next day after casting the decking, flimsy reason being that they want the walls to fuse properly with the floor)

Is this right? Engr please enlighten us more.

stancydg:


I believe major factors would be ;

-Ratio and quality of concrete mix(most times, wrong mix ratios are used by so called experienced old hands, who probably learnt on other sites, without the academic background and applying same on a totally different site without considering prevailing factors. A few times they listen to professionals, the labourers pack sand alongside the granite, thereby diluting the mix unnecessarily.)

-Incorrect specifications of materials for structural members, such as iron rods. (Often times, wrong specifications are used even when quality materials are purchased) Span may not be a major issue if correct specifications are used. e.g if the architects design requires no distracting pillars, it will be the duty of the structural engineer to specify diameters that will work. Audacious projects such as winners chapel otta has proved this point.

- Inadequate curing time for concrete casts, such as columns, beams and the decking. (Most folks just continue building the next day after casting the decking, flimsy reason being that they want the walls to fuse properly with the floor)

Is this right? Engr please enlighten us more.

. Yes you are right but on what you said Spanning may not be the cause, i disagree with you on that. Sometimes architects design without considering the safety of the structures and is now the structural engineer that will call him to other. Also in the case of no column & long spanning, the Slab depth should be increased which may not have been done there so i will say that long spanning is still part of the cause.

Dilyschigo:
. Yes you are right but on what you said Spanning may not be the cause, i disagree with you on that. Sometimes architects design without considering the safety of the structures and is now the structural engineer that will call him to other. Also in the case of no column & long spanning, the Slab depth should be increased which may not have been done there so i will say that long spanning is still part of the cause.

This issue has been over flogged on NL already, referring to Architect/Engineer relations. Wouldn't want us to start a caper we can't finish. One thing is sure, we studied so we could proffer solutions. So, whatever it is that the Architect has designed, within professional standards, and is the wish of the client must receive required engineering solution from competent professionals, so long as the financing and technology is available. Not some flimsy structural excuse, because as said earlier, you were trained not just to come and repeat the norm.

stancydg:


This issue has been over flogged on NL already, referring to Architect/Engineer relations. Wouldn't want us to start a caper we can't finish. One thing is sure, we studied so we could proffer solutions. So, whatever it is that the Architect has designed, within professional standards, and is the wish of the client must receive required engineering solution from competent professionals, so long as the financing and technology is available. Not some flimsy structural excuse, because as said earlier, you were trained not just to come and repeat the norm.

. I don't really get your point. Are you saying that long spanning that need introduction of column or depth increase (deflection in check) & was not done can not be a cause of structural failure.

Dilyschigo:
. I don't really get your point. Are you saying that long spanning that need introduction of column or depth increase (deflection in check) & was not done can not be a cause of structural failure.

I think he is trying to say engrs should address structural problems without trying to shift blame on architects...can u design a cantilever beam spanning more than 4.2m?

skelefish:

I think he is trying to say engrs should address structural problems without trying to shift blame on architects...can u design a cantilever beam spanning more than 4.2m?

You caught my drift.

Actually my post i wasn't blaming the architect but illustrated the likely cause of the problem. But in all there should be co relationship between Architects & structural engineers for safe structure.

Dilyschigo:
Actually my post i wasn't blaming the architect but illustrated the likely cause of the problem. But in all there should be co relationship between Architects & structural engineers for safe structure.

Absolutely.