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Re: Ask All Your Questions On Building Foundations/structural Issues -expert by 400billionman: 11:17am On Jun 27, 2015 |
chilewenwam: Another reason is that most clients do not know what quality of work to set or expect from their masons or builders. My first experience at building a house, I was correcting my builder as if I was the site engineer. And his work has cracks 3 years down the line. Now no engineer enters my site. I know what I want and I direct the workers on what to do. I develop myself by reading journals on construction. If you don't deliver the best quality work, you won't come tomorrow.. |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by 400billionman: 11:18am On Jun 27, 2015 |
elvis07: Pictures please.. 1 Like |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by 400billionman: 11:38am On Jun 27, 2015 |
manwonder: Since you are building a bungalow, but found out that the soil is waterlogged. All you need do is secure your foundation by using columns as if you are building a duplex. See diagram below. Your foundation depth should not be the usual 2 ft but at least 3 to 4feet. Instead of 3 blocks below the earth surface, use 5 blocks. If you were erecting a duplex, you would have needed a soil test to determine the SBC Safe Bearing Capacity of the soil. But we assume your bungalow wont be too heavy to need such tests done. The deeper your foundation, the safer your house.. 2 Likes
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Re: Ask All Your Questions On Building Foundations/structural Issues -expert by ADAMUdaCOWBOY: 11:47am On Jun 27, 2015 |
opalu:Thank you so much. But please do you think working with pad foundation and tying the columns with a ground beam and also making the lintel to go round will also work? |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by mixratio(m): 2:03pm On Jun 27, 2015 |
inecchairman:try your hands on good quantity survey texts. Try to familiarize yourself with standard dimensions of building materials eg length of rebar etc. The Internet also works wonders. op pls explain more. As for me I still dey find work |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu: 5:11am On Jun 28, 2015 |
mixratio: That was a good answer |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by kloser(m): 8:36am On Jun 28, 2015 |
[quote author=kloser post=35168831]Please should one be worried if the compound i.e the play area and car park of a building gradually sinks and detaches from the main building but the building itself isnt sinking at all,note-the foundation of the building is piling[/quote? |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by drealaz24(m): 12:17pm On Jun 28, 2015 |
kudos to the experts in the house. I seek your opinion on this; whc one is better ( bear in mind size, value and potentials in terms of development) -A quarter plot at Ibeju Lekki OR a two plot of land at Ifo (Ogun) (goes for the same amt) secondly -pls is it possible to build a three bedroom flat on a quarter plot of land. |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by Nmeri17: 6:37pm On Jun 28, 2015 |
opalu please I need your opinion on this https://www.nairaland.com/2390516/vibrating-house-indication-collapse |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu: 3:49am On Jun 29, 2015 |
kloser wrote: Please should one be worried if the compound i.e the play area and car park of a building gradually sinks and detaches from the main building but the building itself isnt sinking at all,note-the foundation of the building is piling What it means is that the soil under the play area and car park was not properly compacted during construction. Many builders focus more in compacting the building a area than the remaining part of the compound. This is wrong because when the compound is not well rammed, there will be voids underneath. And even if it's left bare or its laid with interlocking, by the time water starts finding it's way under, it will start settling and in the long run affect the building foundation. So to correct this, you will have to fill the compound more and compact more. Remove the paving stones or concrete flooring whichever you did. If the problem is due to the use of loamy or muddy filling material, then you have to remove them and use good filling sand. When compacting, sufficient water need to be released on the different layers so it can settle well. Thanks. Hope this helps 1 Like |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu: 4:02am On Jun 29, 2015 |
drealaz24: People will always prefer 2 plots to quarter plot (not even half plot). However you would have to check the rent of a 3 bedroom in that same part of Ibeju and 3 bedrooms in ifo . To make an appropriate comparison, write the rent of 1 unit of 3 bedroom in Ibeju on the left and write the rent of sum of 4 units of 3 bedrooms on the right. It is generally believed that the Lekki corridor has prospects due to the Free Trade Zone but there is no area that cannot spring surprises in terms of prospects. As for your question on 3 bedrooms on quarter plot. It is achievable. If you are using smaller room sizes. At worst you take 2 bedrooms upstairs instead of a bungalow 2 Likes |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by drealaz24(m): 5:18am On Jun 29, 2015 |
opalu:thanks |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by jejeman: 9:24am On Jul 01, 2015 |
Pls the iron bender made a mistake,he did not extend the pillar from ground floor to the edge of the shoot out.any way out
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Re: Ask All Your Questions On Building Foundations/structural Issues -expert by erico2k2(m): 2:23pm On Jul 01, 2015 |
opalu:Would you require mechanical drills for these piles or is it done by hand? |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by erico2k2(m): 2:28pm On Jul 01, 2015 |
jejeman:I think it will be a good idea to take another foto from the side of the building and inside the angles so the degree of weakness can be measured,then people can give you a well informed advise. |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by jejeman: 3:22pm On Jul 01, 2015 |
erico2k2:thanks the shoot out is 1ft both side the pillar is supposed to be at the Edge that is angle 90
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Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu: 2:32am On Jul 02, 2015 |
erico2k2: Do they use hand to drill the piles? It's preferably done mechanically |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu: 2:39am On Jul 02, 2015 |
jejeman: 2 options. I advise you to break the slab at the angle 90 so that the rebar of the column for the upper floor could be anchored properly into the slab. Since its too far to crank from where the starter bars are to where you want it to be. Please when doing the breakage, make sure the formwork and props are still in place. If they have been removed, use some bamboos or acrow props to hold the slab edge tightly from under. The reason is that as the slab is being chiseled, it can cause unnecessary vibrations that may cause cracks later. 2nd option is for the column be relocated to where the starter bar is. It is not always compulsory for upper floor columns to be at the angle 90. But all these are based on the structural drawing you are using. I hope I understood your question. 1 Like |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by snakebeat: 6:28am On Jul 02, 2015 |
opalu:Nice analysis sir. Is blinding different from foundation footing? because most people lay foundation blocks on the blinding, without any foundation footing. Does this have any serious structural implication on the building? & what is the purpose of blinding? Since both blinding & footings are concrete? Thanks. |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by jejeman: 6:43am On Jul 02, 2015 |
opalu:yes,many thanks |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by erico2k2(m): 10:12am On Jul 02, 2015 |
opalu:ofcos hands could be used.same way you drill bore hole. If the earth permits you. I know of a small machine that can drill up to 8 ft. U just need the drill bit plus xtension |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu: 4:09am On Jul 07, 2015 |
erico2k2: 8 feet is not deep enough though. And maybe it's because i haven't done any pile using hand except boreholes. |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu: 4:17am On Jul 07, 2015 |
snakebeat: Blinding is to give a horizontal working area and also to prevent a measure of seepage from the soil under the foundation. Weak concrete or strong mortar could be used. But Foundation footing is a reinforced concrete that acts as part of the foundation. There are some sites that require footing while some do not. The major aim of the footing is to spread the load along the foundation line. You know that in sec school physics, Pressure P = Force F ÷ Area A. Therefore the Higher the area created by the Footing, the smaller the pressure. 2 Likes |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu: 1:37am On Jul 08, 2015 |
ADAMUdaCOWBOY: Bros it depends on the rocky terrain. Anything I say without seeing the site or at least a picture will not be detailed enough. tying the lintels round helps in adding robustness to the monolithic structure. |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by blank(f): 7:13am On Jul 08, 2015 |
opalu: Thank you for your response. What can be the remedy if the DPM was not put and you now have moist seeping into the walls? |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by smiley001(m): 9:51am On Jul 08, 2015 |
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Re: Ask All Your Questions On Building Foundations/structural Issues -expert by snakebeat: 9:56am On Jul 08, 2015 |
opalu:Thanks for ur response sir... 2 Likes 1 Share |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by joshua112: 4:51pm On Jul 08, 2015 |
good day opalu,please I would need your advice on this.i have a friend who wants to build a bungalow on a land at ibeju lekki although the area is a bit waterlogged but his land did not have water on it when I visited the site early this year infact its was sand sort off but I knw when rain falls there might be water there. pls what kind of foundation type do u advice for the bungalow.if its raft what height do u advice my friend to use for the raft foundation since its a bungalow |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by snakebeat: 7:16pm On Jul 08, 2015 |
opalu:Nice job sir. Is there any need to use beam head course on buildings to be roof with timber? |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by babaeko1: 9:02am On Jul 09, 2015 |
Thanks for your time answering our questions, I have some questions for you. When building a block of flats with a canal at the back of the property, are there any measures that one can take to prevent flooding if there are issues with the canal in future. The plot is at the beginning of a road, so slightly slope on the high ground, so when filling the compound, the plan is to do the compound floor such that it slopes towards the rear which is where the canal is so that all waste can be disposed into the canal. Would a concrete floor be better or use interlocking stones ? When casting a septic tank in the Lekki area, any precautions to be aware of ? When is the best time to cast a gate ? At the end or it doesn't matter ? When constructing a security man house, any precautions to take ? When constructing a block of 6 flats on a single story, i.e. 3 flats per floor and a penthouse at the top in the middle of the building, is it advisable to have a tank incorporated into the top of the building or just have a tank tower. There's space constraints in the compound, the property is also supported by 52 pillars on the ground floor. Thanks. |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu: 8:53pm On Jul 09, 2015 |
joshua112: First check whether the site requires sand filling first before the foundation. As for what depth of foundation to will depend on careful site examination. Since its bungalow, the foundation is not too critical though there are bungalows that experience faulty foundation. If I see your architectural and the site pictures I could tell you what foundation to use |
Re: Ask All Your Questions On Building Foundations/structural Issues -expert by opalu: 9:10pm On Jul 09, 2015 |
babaeko1: These are tough JAMB Questions. Lol As for the compound, you need to determine the flood level at the peak flooding or overflow of the canal. IF the water level is high to the point that it flows into the compound, then do a retaining wall (embankment) running along the perimeter of your Compound parallel to the Canal. Then fill the compound to a level that it will be above the worst flood level. The help of the retaining wall is to withstand the vertical water pressure from one side and the lateral earth pressure from the other side. This was the solution I have to Lekki Gardens phase 2 some 3 months ago. Many people erroneously use blocks to hold back the flood. Yes, slope the compound as you said. Better still you could slope it to a drain that takes water from compound to the Canal at least there will be fence along that embankment. Yes use concrete floor except you have an excellent person who can mold and lay near perfect interlocking 1 Like |
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