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How We Build Duplexes In Nigeria by abdulwastecx(m): 8:16am On Jul 28, 2016 |
I am opening the thread to showcase different method of duplexes construction in Nigeria. So many of our job underway in different part of the country will be showcased here. 4 Likes 2 Shares |
Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 8:22am On Jul 28, 2016 |
First stop: Benin, in this old city of former bendel state capital and now capital city of Edo state, we will be supervising the construction of a semi detached five bedroom flat with a two unit two bedroom flat |
Re: How We Build Duplexes In Nigeria by Dominionng(m): 8:22am On Jul 28, 2016 |
Front seat taken! 1 Like |
Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 8:44am On Jul 28, 2016 |
Setting out: which involves transferring of the information on the architectural, structural and services drawings on to the ground to help marked out the foundation excavation. Materials used include the following : Pegs Profile ( 2 x 2) Builders square Hammer Line or builder rope Meter tape Nails etc. |
Re: How We Build Duplexes In Nigeria by koning: 8:55am On Jul 28, 2016 |
Following. I would like you to showcase ways to reduce excess load on One-story duplexes. I am of the opinion that Nigerian builders strain the foundation by packing too much weight on the upper floor. Do we really need all that Iron rods for a residential duplex. The Pillars and columns are meant to hold the upper floor. Throw some more light on this. 1 Like 1 Share |
Re: How We Build Duplexes In Nigeria by NL1960: 10:09am On Jul 28, 2016 |
abdulwastecx: following 1 Like 1 Share |
Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 10:38am On Jul 28, 2016 |
koning: I am on the same page with you on how to reduce weight of suspended slab but the misconception here is that the majority weight of slab is that of the conconcrete. In most cases, reinforcement bar contribute less than 10% to the weight of any structural members be it slab, column, beams or footing. Another major contributor of load to suspended floor is partition walls. 225mm partition walls contribute as much as 3.6kN/m 2 when built on slab without bottom beam. Best way to reduce load on suspended floor is reduce quantity of concrete and portion loads by using thinner section for upper wall, light weight materials for upper walls etc 8 Likes |
Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 2:15pm On Jul 28, 2016 |
Stage 2: excavation work Before we go into excavation, I will like to explain our foundation type for this building. We are going to be using pad footings to carry all the structural columns what strip footings carrying the foundation wall and ground floor walls. The size of the footings are as follows Pad type one = 1200mm x 1200mm Pad type two = 1500 x 1500mm Pad type three = 1800 x 1200mm Thickness of pad = 350mm Pad reinforcement : using Y12 mm bar spaced @200mm center to center 3 Likes
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Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 2:21pm On Jul 28, 2016 |
Preparation of foundation basket and foundation column/short pillars. We have 38 columns and 35basket 32 of these basket are isolated pad base while 3 are combined pad base. The foundation column/pillar is made up of Y16mm and 8mm ring spaced @200mm c/c 2 Likes
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Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 2:28pm On Jul 28, 2016 |
Foundation footings concreting work: The foundation foot was casted with the following aggregates : 19.5mm coarse aggregates (ganite/gravel) River sharp sand and ordinary Portland cement. Mix ratio was 1:2:4 by weight 2 Likes
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Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 2:33pm On Jul 28, 2016 |
Foundation block work Foundation block is 9 inch or 225mm thick (450 x 225 x 225). Height of block work up to dpc level = five courses of block work. Mix ratio of mortar 1:6 5 Likes
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Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 2:34pm On Jul 28, 2016 |
More foundation block work updates 2 Likes
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Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 2:36pm On Jul 28, 2016 |
Foundation pillars formwork and casting 1 Like
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Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 2:44pm On Jul 28, 2016 |
More block work updates 3 Likes 1 Share
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Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 2:52pm On Jul 28, 2016 |
More foundation block updates
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Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 2:56pm On Jul 28, 2016 |
Introducing a plint beam of 225mm x 225mm beam, reinforced with 2Y12 up and 2 Y12 bottom. 1 Like
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Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 3:02pm On Jul 28, 2016 |
More updates from plinth beam construction 1 Like
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Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 3:08pm On Jul 28, 2016 |
Plinth beam is a beam that is used to connect all the foundation column at a level a little bit above ground level or immediately above grade. It serves as a tie and also help to provide end restrain to the foundation column for a very high dpc above ground level. It help to provide top restrain to reduce slenderness ratio of columns or pillars. Also help to strengthen foundation block above ground to help it serve as a retaining wall when sand filled 13 Likes 1 Share |
Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 3:10pm On Jul 28, 2016 |
Sand filling and compaction of foundation to dpc level
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Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 3:13pm On Jul 28, 2016 |
Ground floor plumbing layout for all waste pipe. 3 Likes
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Re: How We Build Duplexes In Nigeria by msogunro: 3:24pm On Jul 28, 2016 |
abdulwastecx: Can you explain why you chose this type of foundation? |
Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 4:13pm On Jul 28, 2016 |
msogunro: That was the structural design specifications. It was in the structural drawing. We also cost checked all the design before starting the project. For educational reason: width of foundation is mechanically gotten from the relationship between all the axial load acting on the building and the bearing capacity of the soil beneath the footings. Assuming axial load acting on the footing through the column is N Allowable soil bearing pressure at certain depth where the footing is to be located is P Area of footings A Width of footing B Mathematically A = 1.1N/P Where N is only the serviceability load acting the footing. For square footing, B = square root(A) plus some allowance The depth of the footings is assumed at first and check for shear later during shear calculation. Diameter of bar, bar spacing are chosen based on the result of bending calculations 4 Likes 1 Share |
Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 4:15pm On Jul 28, 2016 |
More plumbing work
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Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 4:16pm On Jul 28, 2016 |
Note: provisions were made for plumbing work without breaking structural wall for them. It is a very good way to do conduit plumbing work 2 Likes 1 Share
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Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 4:18pm On Jul 28, 2016 |
Formwork to the dpc, placement of DPM and casting of dpc
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Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 7:42pm On Jul 28, 2016 |
Preparation of our starter bar for stair case. This building has three stairs with the following information. Width of stair = 900mm
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Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 7:45pm On Jul 28, 2016 |
More updates
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Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 8:11pm On Jul 28, 2016 |
Ground floor block work
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Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 8:32pm On Jul 28, 2016 |
More updates
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Re: How We Build Duplexes In Nigeria by emmadejust(m): 8:37pm On Jul 28, 2016 |
following.... abdulwastecx I'm signing in fully. I hope say form never finish... 2 Likes |
Re: How We Build Duplexes In Nigeria by abdulwastecx(m): 8:56pm On Jul 28, 2016 |
emmadejust: For my oga like you... Form go always dey ground. Welcome 1 Like |
Re: How We Build Duplexes In Nigeria by mufutau55(m): 9:08pm On Jul 28, 2016 |
Silent Lurker. Hajji M. 6 Likes 1 Share |
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