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New Construction Of A Block Of 4 Flats Of 3 Bedrooms At Awka, Anambra state / NEW Construction - 3 Bedroom Bungalow - Executive Design / New Construction Of A Block Of 6 Flats Of 2 Bedrooms In Enugu East. (2) (3) (4)
New Construction by lekanOres: 5:10pm On Jun 09, 2023 |
We are starting a new site, please follow us. And engage us as we go along
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Re: New Construction by lekanOres: 7:31am On Jun 15, 2023 |
The site was filled and compacted with sharp sand. Sharp sand is very good when it is compacted. But we can also use other fillings like laterite, rubbles, etc Since the foundation type is a Raft foundation, sharp sand is the best option. We will also allow the sand compact further under the rain. 1 Like
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Re: New Construction by lekanOres: 6:28pm On Jun 15, 2023 |
Take a look at the 3D of the new construction, it's a medical centre. The Project is a bungalow on a 1000 square metres land. It is a complete turn key project. Construction time is estimated to be six months. 1 Like
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Re: New Construction by lekanOres: 5:36pm On Jun 27, 2023 |
Some pictures of Reinforcement and formwork for the Raft foundation.
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Re: New Construction by lekanOres: 9:09am On Jul 13, 2023 |
The ground beam aka raft foundation was selected and put in place from the recommendation below RECOMMENDATION AND CONCLUSIONS The type(s) of foundations to be adopted on this site shall be determined by the bearing pressure requirements and the cost of utilization. A state of permanent submergence of the subsoil is assumed in the following foundation analysis. 1 Shallow Foundation To adopt shallow foundation on this site, three option may be considered. a) The first option involves individual excavation for footings to about - 1500mm. Using an average cone end resistance of 25kgf/cm2 for the silty sand at -1500mm, an allowable bearing pressure of 35KN/m2 is computed for a pad and column placed at this depth with estimated settlement in the order of 25mm. b) A raft foundation could be placed on the present ground level, Such raft is capable of mobilizing a safe bearing pressure of 50KN/m2 with estimated settlement not exceeding 50mm. c) The third option involves the placement of a sand fill across the site. This puts into consideration the low lying nature of the ground surface within the site relative to the access road. The type of material recommended to for the fill is well graded sand, known to be characteristically stable for this purpose. This material has good drainage properties and may be compacted in 0.1m to 0.3m thick layers to densities approaching the standard proctor maximum at optimum moisture. A relative compaction figure of 97% is recommended to be achieved for the fill. The thickness of the fill will distribute surface loads, acting itself like a big raft. The fill will serve an added function of counteracting flooding provided the finished level is raised above the crown of the access road level. If the recommended fill material is used and well compacted, the fill may be capable of safely bearing 75KN/m2 with settlement not exceeding 50mm. A fill thickness of 1500mm have been used in the above computation. Where the above given allowable bearing pressure is deemed inadequate for the proposed development or the use of shallow foundation is not applicable, deep foundation in the form of short piles may be considered. 5.2 Deep Foundation Piles to be used may be bored cast- in -situ or pressure grouted auger piles. Usage of driven piles in built up areas such as this site may result in damages to adjacent structures due to uncontrolled stress transmittance. A pile depth at -6.00m may be considered. At this depth , using an average qp of 49kgf/cm2 an ultimate bearing pressure of 1,630KN/m2 is computed for the pile toe area of bored pile. With the above value and using a safety factor of 2.5 the following is working loads for different sizes of bored piles.
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Re: New Construction by lekanOres: 1:47am On Jul 27, 2023 |
Block work starts with forming. The process called Forming on site is when the 1st set of blocks for the walls are placed on the slab according to the architectural plan, showing all the walls and openings. This process requires a very intelligent mason to carry out, because all the walls must be straight, parallel and perpendicular at corners, except where the architectural drawings say otherwise.
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