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Re: Ask All Your Questions On Building Foundations/structural Issues -expert by erico2k2(m): 3:52pm On Jun 26, 2015 |
casiraghi:what has happened to you is as a result of no damp proof b4 the concrete was poured on the floor. After the compacting of the filling sand there should be rolls of plastic sheets on top the sand b4 concrete .Hope this helps. 1 Like |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by adonismuller(m): 3:56pm On Jun 26, 2015 |
Gifted4all:yes, if the area is damp a little.. If the area is water-log use reinforcement |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by adonismuller(m): 3:57pm On Jun 26, 2015 |
jejeman:not really, beams are required in spans of 4.5m and above 1 Like |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by adonismuller(m): 4:10pm On Jun 26, 2015 |
manwonder:whether you build in dry season or rainy season, it doesn't change the fact that the area is waterlogged,u r even lucky u discovered the area is water logged before casting the foundation. I will advice you use reinforcement or hardcore for your foundation, whether in dry or rainy season because that area is water logged. You can also do some sand filing and compacting. |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by joshua112: 5:20pm On Jun 26, 2015 |
opalu: nice thread opalu .Although im an architect and a contractor this tread is also useful to me too nice job keep up the good job we are following. 2 Likes |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by mixratio(m): 5:23pm On Jun 26, 2015 |
kloser:differential settlement. Op pls explain better to him. As for me, I still dey find work. 1 Like |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by namcyll(m): 5:47pm On Jun 26, 2015 |
talk sence wen u talk of employin ppl! rubbishness! |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu: 5:54pm On Jun 26, 2015 |
austin2all: If you have the architectural drawing, I will give you a near perfect quote |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu: 5:58pm On Jun 26, 2015 |
erico2k2: Thanks bro. That is the answer. DPM is Damp Proof Membrane which is locally called Nylon. It has to be laid on the floor area before blinding before reinforcement work. Some persons prefer to lay the nylon on top of the blinding while some lay it directly on the hardcore. The main essence is to lap the nylon rolls so that moist doesn't rise to the floor and spoil your tiles and wardrobe 1 Like |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu: 6:06pm On Jun 26, 2015 |
Tjhamman: You can convert any building into any building of your choice. Simply use the right professionals who know their onions.l All that a Structural Engr will need is the architectural of the existing structure and that of the proposed structure. Infact if a good architect does the architectural, the new upper floor will not be too complex in the circumstance. |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by jejeman: 6:06pm On Jun 26, 2015 |
adonismuller:Many thanks |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu: 6:25pm On Jun 26, 2015 |
by semitunde:10:52am I used 225x900mm deep raft The reason why I didn't use 225x750mm raft was because the Geotechnical report I worked with for that site showed me the subsoil strata. Besides 75mm depth was inadequate based on my structural analysis In terms of the flooding, water flows to the compound that has the lowest level. It gets worse if a compound is lower than the connecting road. So what I did was simply to raise my site level above the road level to a point that cost won't be outrageous. |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by inecchairman(m): 6:33pm On Jun 26, 2015 |
pls can u teach me how to estimate building material for building construction,am a civil engineering student |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by Jimmyo3(m): 6:38pm On Jun 26, 2015 |
how much will it cost to build a 30 room self contain in a 3 storey building setting? 1 Like |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu: 6:53pm On Jun 26, 2015 |
manwonder: A. The foundation for bungalow is not as critical as that for a storey building. In as much as I don't know the sub soil situation, I will also be interested in determining the suitable compound level for the site. There was this Joint Venture our company wanted to embark upon at Osapa. The owner had developed two luxury blocks of flats with good foundations but without caring to find the good datum level. Therefore when Lagos state constructed the road, the road level was at the ground floor widow level of the 2 multistory buildings. Therefore just a single rainfall fills the compound like a swimming pool. It doesn't get dry before the next rainfall. So back to your question, you can use Reinforced Wide strip foundation of short raft. The reason is to tie the entire foundation so that they act as a single unit. I have used smaller pad foundation for bungalow due to the nature of the soil. There are things an Engineer can see by site visitation that pictures may not cover. b. The materials are granite, Sharp sand, Cement and Water. You are add some reinforcement depending on what your Structural Engineer on Site advises. C. & D. Send me your email |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by Nobody: 6:58pm On Jun 26, 2015 |
Pls sir,do you have idea on pile foundation? |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu: 7:07pm On Jun 26, 2015 |
Eragablessen: Give it to an experienced architect. If you don't have I can give it to someone reliable to do it for you. But why wait till 2016 when you can finish the building before 2016? Best of luck any ways 1 Like |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu: 7:08pm On Jun 26, 2015 |
Adewunmismith: Yes I have done thousands of piles for different buildings. What aspect of piling do you wish to know about? |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu: 7:14pm On Jun 26, 2015 |
joshua112: Thanks sir |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by ddugeri(m): 7:57pm On Jun 26, 2015 |
Myself2:sorry sir... i meant no harm |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu: 8:00pm On Jun 26, 2015 |
algorithmz: When there is a crack problem, the Structural Engineer is like a doctor that will diagnose the remote cause of the crack. If it is a Structural crack it will be treated structurally by adding concrete element in the appropriate place (s). The treatment it will be given is consequent on the findings of the professional involved. So I cannot sit and give a gbogbonishe solution to all structural cracks. For the rising damp issue, someone has answered that very well 1 Like |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by frank043(m): 9:13pm On Jun 26, 2015 |
opalu: Nice one OP. That's a superb service you delivered. Pls, I'd like you to 'briefly' explain to me how you go about your raft foundation analysis. Which principle do you use? Which software(s) do you use in your analysis and design? I'm so sorry if I'm deviating from the main thing, but it's all about getting a good job done down there... Nice section... Thumbs up. |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by Nobody: 10:15pm On Jun 26, 2015 |
opalu:thanks for the response,i want to know the best pile foundation that can be used for structures in waterlogged areas like lekki,ajah. |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by donpapaecko(m): 11:22pm On Jun 26, 2015 |
Eragablessen:worry not.....ur worries should be getting a good architect who understands ur design functions.....call 08068030834 1 Like |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu: 3:10am On Jun 27, 2015 |
Adewunmismith: The major characteristics of piles are the pile diameters, the pile depths and the pile groups. And we have two types of piles commonly used here. Driven piles and In situ piles. The characteristics and the types are determined based on the kind of structure coming on the foundation and the nature of the soil. I once did some piles at a riverside near Agbowa after Ikorodu. The piles were average depth of 30m. For a load that is like a single storey. But a Kilometre from this site has good soil that won't require piles for such a superstructure. In a place like lekki, there are areas that a 6 storey will require 30m depth pile. Some sites will require far less depth. Some will require far more. So piles are not 1+1=2. You run the necessary tests and analysis. 1 Like |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by texanomaly(f): 3:19am On Jun 27, 2015 |
Great information op. Thanks for this helpful thread. 1 Like |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu: 3:21am On Jun 27, 2015 |
alchemist: Bros I won't be able to condemn or advise against what my fellow Engr has done except I have all the details he worked with. But I have built a single storey in Awoyaya and I used 1800mm depth. 2 Likes 1 Share |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu: 3:30am On Jun 27, 2015 |
ADAMUdaCOWBOY: To build a house on a rock is a nice one. I would have loved to see the picture of the site to advise properly. For now I can give you a skeletal advice. However the type of foundation normally used is solid raft. That means you have virtually horizontal plains where will form the ground floor. Sure there will be some cuts and fills here and there (if possible). Then you panel the ground floor using reinforced solid raft over rock. I will look for a picture of how this is achieved. |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by jydor4real94(m): 7:34am On Jun 27, 2015 |
Nice thread to follow.. Thanks Op. |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by Nobody: 7:54am On Jun 27, 2015 |
opalu:,thanx for the enlightenment sir, I am a fresh civil engineering graduate ,thou I have not witness any structural construction using piles as the foundation. |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by manwonder: 9:18am On Jun 27, 2015 |
opalu: I just sent you an email; please check your mailbox. Thanks. |
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