So after hanging them completely which took 2 days per building for that, we then started pouring with concrete, the pouring would be done in 2 to 3 days not because of the volume but because the pre cast can't hold all the weight at once so we cash 1/3 of the volume to 1st cover the top rod we exposed earlier then a day after we cast 2/3 of the precast volume and eventually on day 3 we cast the remaining using a fine mix. Also it's important not to forget putting a U shaped quarter rod on the beam when casting for roofing purpose.
MRFIXER001: Mix ratios are decided based upon the type of construction structures and mix designs by the structural engineer. And it's categorized into three which are; A. Nominal Concrete Mix Ratios B. Standard Mixes Ratio C. High Strength Concrete Mix Ratio
Mixing ratio depends on the load and compressive strength of the concrete.
In conclusion 1:2:4 means 1 unit of cement, 2 unit of sand 4 units of granite. And it's advisable to use that. Anything more reduce the compressive strength of the concrete
wow it's funny that this weird mix ratio of mine is a norm here ... I'm learning.
Aforxzy: The ratio of your concrete mix determines the strength, workability and durability of your concrete structure. The strength is gotten from granite , that's why more granite is used in the mix while the binder is the cement.
Often times you see people using less of the granite because they want a fine finish and they end up compromising on the strength. Also site labour reduce the quantity of granite because it makes the mix heavier for them to carry.
So your workmen are invariably reducing the strength of your concrete element with that mix ratio and it has nothing to do with your location.
A finely finished concrete is gotten from properly mixing the components, vibrating to remove voids and using a good formwork and not by reducing the granite quantity.
However the granite should be washed and free from dirts and clay.
It's your project , insist on the right mix and they will comply.
I doubt u are female tho ahhh... Na man u be boss. thanks alot.
Hello house I'm having a little confusion as to mix ratio. in delta state most concrete are mixed at 1 bag of cement 7/8 pans of sand n 7/8 pans of granite. which is a 1:4:4 mix. and it's a norm. someone here once told me a mix shouldn't be more than 1:2:4. which is 1 bag of cement 4 pans of sand n 8pans of granite. is there any reason why the difference?
Next phase was to allow the precast dry in 2days and then we hang them on our already half casted beam. this phase we got extra 12 quarter rods to be used in hanging the casted facial boards. see a short attached video for a description of the process. this hanging took 2 people 4days per building
Miyachi: Please I'm looking for a solution to water ingress in the walls of this property. I don't know the right way of going about correcting this problem. The plaster and paint is flaking off, could this be as a result of low-quality mortar being used? There is also an open flower bed around the building.
damkanlinsin: Good evening please house I want to do art work on my project. I’m stuck in making a decision about pre cast art work and direct art work. Please which one is best to go for. Thanks
when u say "art work" are you referring to concrete facial board AKA PARAPET? which can either be precast or full cast
NEXT is to precast the parapet that would be hanged. we casted about 20 18ft range using a 3 step form and that took 4 days 19 bags of cement. 85 headpans of sand 15 quarter rods ( cut n bent)
along side we had a carpenter around to prepare the scaffold which would be used for standing. that took 2 carpenters 1 day Bamboo 100
Next phase of the work was casting the the 1st part of the beam to sit the rods and leave the top part exposed so we can hang the precast on it. that took
1 day 10 bags of cement 80 headpans of granite 80 headpans of sand 3helpers (to mix n serve concrete) 2 bricklayer to tap n pour the mix
this is what it looks like when dried, picture below. p.s: noticed how the carpenters brazed the form work between the iron? that will help lift the rod few inches from the block and also help those casting to not cover the top part of the rods.
ON one of the days the benders where doing their work a guy came n said he was the CHAIRMAN BENDERS UNION and he seized the tools from the workers n took it away before I could get back to site, we had to pay for peace, his name was EKPAN, horrible day.
Next phase of the process is preparing and installing the iron beam, we prepared the stirrups at 7" by 4" because the blocks were 5" blocks , we also needed the rods to elevate higher than the form work so there wouldbe space for hanging the precast parapet.
Taking our measurements in video Below , the iron work took 36 10mm rods 15 8mm rods for stirrups a bundle of binding wire 3 iron bender worked for 3 days
Work started with the carpenters preparing the form work for the precast parapet beam this particular part of the work took 4 days for the two units of two bedroom bungalow 2 carpenters 90 planks 1 bag of 2" and 3" nail
Good day house I'm writing this thread to document a parapet contract I was given recently in 2023 this narration will contain procedures for the process of handling a precast parapet work, including cost n necessary pictures n video where available.
hello house can anyone give me a working formula to calculate the sand. granite n cement needed for a concrete floor casting? and is a mix of 1:8:9 (1 cement bag, 8 pan of sand, 9 pan of granite) good enough for a swampy area after proper filing with sharp has been done?
dapotemi: My own case is quite funny... Bought a land for 4m in 2020 in Ogun state(half plot). Now this is the twist. The land is a 2 plot of land (120 by 60 *2), fence round but this seller decided to sell one plot (120 by 50), then sold half for me for 120 by 25, what they have remaining was 120 by 45.... At first, I got a buyer for the last one but the person did not buy because he insisted that it's not a full plot (120by45)... One Alhaji later got it, when Alhaji started foundation, enter my own space and they call my attention, luckily na the same person sell the land for all of us...na so argument start o, Alhaji insisted that his land is 120by60, and that he's a surveyor and nobody can cheat him, luckily for me, the seller insisted that what he sold for Alhaji is 120by45.... Na the wahala we dey drag, I have a receipt but Alhaji no get, He just transferred money to them... When Alhaji got info that I paid 4m, he was mad because they collected 11M from him...He felt cheated so he say he won't buldge...Oga come and shift ur foundation now, na d wahala we dey o.. On a low key, I dey fear Alhaji because he looks like one old Abija, one of this herbalist for Yoruba movie, make d man no come nak me jazz...so I just dey try calm am down, dey respect am..moreso, Alhaji is a surveyor, with years of experience but he was jus unlucky because he was not around when he made payment..Alhaji is older than my father...We have been on it for like 4 month now...I just weak
just sell ur own join for am for 8m make u waka jejely
segcymoor: Yes.. it's quiet advisable to run comprehensive soil test to determine suitable foundation...; But then building may vibrate even with good foundation
how about in situations where it's just a bungalow? most people just build based on what is popular in the environment