How to Calculate Cement, Sand and Aggregates In Concrete Slab | Easy Step-by-Step Quantity Calcs

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In this video, we will show you how to calculate the quantity of materials needed to cast a concrete slab. This simple and easy-to-follow tutorial will help you estimate the amount of cement, sand, and aggregates you will need for your project. Whether you're a student, a DIY enthusiast or a professional contractor, this video is a must-watch for anyone looking to improve their concrete casting skills.
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Опубликовано:

17 апр 2023

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Комментарии : 125

@Nkporandokaka Год назад

Please we need more video like this you are doing amazing job.

@civilworks826 Год назад

Thanks 👍

@dayosuara8295 Год назад

Great work chief

@victoremesim Год назад

I love your presentation. Even a blind person could follow and understand what you've said and what exactly to do. Thanks

@civilworks826 Год назад

Glad you liked the video ☺️👍

@amazinggrace5300 3 месяца назад

Fantastic video! Gave me the needed information in an unforgettable way. Kudos 👏

@civilworks826 3 месяца назад

Glad you liked the video.

@kingsleyaddo1917 Год назад

Thank u sir, am an electrical engineer but this video has help me understand my civil knowledge. Thank you

@civilworks826 Год назад

You're welcome!

@enod9746 Год назад

Oga, you need to develop this channel. The info is priceless.

@civilworks826 Год назад

Thanks 👍. I have other videos in the pipeline. Watch this space!

@user-pq1vg7vj9b 16 дней назад

Perfect in cacuation were perfect😮

@civilworks826 16 дней назад

Thanks!

@boluwatifeadekanle8121 11 месяцев назад

This is excellent I understood perfectly well

@civilworks826 11 месяцев назад

Glad you enjoyed the video! Please subscribe for more. Thanks

@evincentevinpal142 2 месяца назад

Very help full video thank you

@civilworks826 2 месяца назад

Glad you found the video helpful

@evelynjifon9827 Год назад

Thank you sir. You know your trade.🙏🙏🙏🙏

@civilworks826 Год назад

Thank you 👍

@ExeNguMalado 11 месяцев назад

This was very helpful thank you

@civilworks826 11 месяцев назад

Glad you found it helpful

@davidbusari 5 месяцев назад

Your lecture is so great

@civilworks826 3 месяца назад

Thanks a lot

@Peace-nh9fs Месяц назад

Perfect ur calculations where perfect

@civilworks826 Месяц назад

Thanks!

@muslimgarbaahmad9377 2 месяца назад

Very simple to understand

@civilworks826 2 месяца назад

Thanks

@emmanueljones6002 4 месяца назад

lol, make another video for the lay man, tell them how many bags of cement, how many head pans of sand and gravel is needed to make a slab of dpc. That will make more sense to a lay man. Thanks

@civilworks826 4 месяца назад

Hmmm...you have a point there. I'll include that in one of my next videos. 👍

@joyacollinsngem8623 9 месяцев назад

Your videos are great

@civilworks826 9 месяцев назад

Thanks

@davidbusari 5 месяцев назад

I want more of your lecture

@ambroseoyanga7018 10 месяцев назад

Thanks so much brother

@civilworks826 10 месяцев назад

You're welcome 👍

@xtanlee__ 10 месяцев назад

Wonderful 💯

@civilworks826 10 месяцев назад

Thanks

@BismarkHoffmann Месяц назад

So interesting

@civilworks826 Месяц назад

Thanks

@abbassalisu9245 4 месяца назад

❤❤❤

@user-ov9lg8ky9b Год назад

Very amazing video, pls can you do a video on structural steel design for a watch tower with a shelter house on top

@civilworks826 11 месяцев назад

I'll see what I can do. Thanks for watching!

@kennedymumba5187 Год назад

Thanks

@civilworks826 Год назад

You're welcome

@olayidemosesogunleye6506 3 месяца назад

Good presentation. Can u make presentations for other aspects of building construction like plastering, roofing etc

@civilworks826 3 месяца назад

Thanks for the compliment. And for the suggestion, I'll look into it.

@DelightfulHidingCat-tb4fp 20 дней назад

Thanks for the video.. ❤️👍 How much cubic of concrete mix would I require for slab.. W 2.4m x L 5.8m x 0.1 m

@SELPINVESTMENTS 11 месяцев назад

Let me subscribe first ....Thanks buddy

@civilworks826 11 месяцев назад

Thanks. Really appreciate it.👍

@ambroseoyanga7018 10 месяцев назад

How do they calculate the number sand and cement for wall construction

@ridonngandu8290 8 месяцев назад

thanks

@ridonngandu8290 8 месяцев назад

thanks, very helpful 😊

@civilworks826 7 месяцев назад

You're welcome!

@AdebolaOnakoya 5 месяцев назад

thank you for this video , if we have granite instead of gravel the density we change likewise the volume of granite , can you throw more light on this

@civilworks826 5 месяцев назад

Yes. Depending on the material density, the volume will be adjusted accordingly. This is because the mix design is based on the weight of the aggregates. For example, using granite instead of gravel (they're quite similar though) can give a different concrete strength even if the same mix ratio is used

@user-kx7yo7sk4m 11 месяцев назад

we need more

@civilworks826 11 месяцев назад

Ok. Is there any particular type you will like to see?

@rev.wukolokollie8675 9 месяцев назад

Thanks for the presentation. A question. If Iam using a wheel barrow to measure my mix as in this calculation (1:2:4). Will I be right to say 1 bag of cement is to 2 wheel barrow of sand and 4 wheel barrow of aggregates?

@civilworks826 9 месяцев назад

No. You would be using 1 barrow (not bag) of cement. The unit of measurement must be consistent

@elizabethmaswabi4757 5 месяцев назад

what you can do in this situation is, pour the cement in the wheelbarrow and mark the level, that should be the level you will use to measure the rest of the materials.

@civilworks826 5 месяцев назад

Exactly!

@sekatawasamkaggwa9507 11 месяцев назад

Its a good work, how do we calculator iron bars in the slab

@civilworks826 11 месяцев назад

I'll try and do a video on bar bending schedule at a later date. Thanks

@WEEZEE01 Год назад

Please can you do a recent video of a house plan of 1000,1200 to 1400sqft i.e 20by50 to 20by70 with ground floor,first floor and second floor containing 3 to 5BHK. #Civilworks the materials needed and walls to be used whether bricks or stones or cement blocks

@civilworks826 Год назад

Hmmm. That's quite an ask! Do you have a particular building plan? Or just any plan that fits your description?

@victoremesim Год назад

It is said what you are holding in the hand, you don't need a mirror to see it

@user-jn5td7on1r Год назад

I find your videos very succinct yet deeply incisive and straightforward. How can I reach you please? I would have left my phone number here but I do not know if this comment section is public or not. Kindly reach out please. Thank you.

@civilworks826 Год назад

Thanks. Glad you found the video helpful. You can reach me on +234 813 7870 705. Call/WhatsApp

@beeolabadmus1803 3 месяца назад

thank you can you dfo videos on rigid pavements in the Nigeria context most the videos on youtube are for asians

@civilworks826 3 месяца назад

Glad you liked the video. I've actually thought of doing a video on rigid pavements. Soon

@musaumarmohammad2929 Год назад

Please make a video on how to calculate number of steel bar and cement in casting 14 pillar and slab with a dimension of 10m by 10m

@civilworks826 Год назад

In order to calculate the number of steel bars, one will need to have the structural drawings and use it to prepare a bar bending schedule (BBS). It is from that BBS that the number of reinforcements can be calculated

@civilworks826 Год назад

However, a video of how to do that is in the pipeline. Thanks for reaching

@Gabriel-qp5tn 2 месяца назад

This video is exactly what I need to know, but still don't, kindly assist, 22 meters, in length, 600 cm in width, and 10cm in height, footer for my block wall, M25 concrete recommended, 1: 2:2 ratio, I think, how many cement (50kg bags) how many wheels barrows sand, and stone?

@maybinkashimoto7618 10 месяцев назад

Thanks. your explanation is excellent. But it could have been far much better if you had done it a little bit slow. As you know we are not at the same level of understanding so as to allow us who are slow to grasp the sense out of it

@civilworks826 10 месяцев назад

Thanks for your comments. I'll try and accommodate your concerns in my next video. 👍

@essamkatsu9469 9 месяцев назад

Thank you sir, i have one question, where did you get the 1.54? Please can you explain it furthermore. Thank you

@civilworks826 9 месяцев назад

The 1.54 is mainly to cater for the voids in the aggregates ie the spaces between them. If for example, you have a cup and fill it with stones, you can still put some sand in that same cup without the cup overflowing. And even with the stones and sand "filling" the cup, you can still add some water, again without the cup overflowing. You get the idea?

@essamkatsu9469 9 месяцев назад

@@civilworks826 Yes I got the idea. Thank you

@ambroseoyanga7018 10 месяцев назад

Where did you get that 1.54 from am stack from there

@civilworks826 10 месяцев назад

The 1.54 is a factor that is used to allow for the voids in the aggregates. By the time the constituents are thoroughly mixed and compacted, all the void spaces in the gravel and sand will be filled up, leading to an increase of the dry materials.

@basscoconstructionservices7222 11 месяцев назад

Sir how can i calculate the volume of Mass concrete of LxBxH which is 79 length B39. 5 Height 0.5

@civilworks826 11 месяцев назад

Your question is not very clear. Get in touch via the number in the description box

@falookkanyamazero3544 11 месяцев назад

Thank you very much sir for your interpretation and your calculations. My question is how can someone come up with a design of main Hall.

@civilworks826 11 месяцев назад

Main hall? I don't quite understand the question

@angelaonwuka1987 10 месяцев назад

That'd be the reinforced concrete design He's only quantifying in this video

@civilworks826 10 месяцев назад

@@angelaonwuka1987 👍

@sriraginteriors 18 дней назад

If we calculate in feets, different quantities coming... shall we calculate in feets or in meters

@civilworks826 18 дней назад

It doesn't matter which one, as long as you're consistent with the units, the result will be the same

@kunleali6397 3 месяца назад

How can you calculate for current concrete rate which can be used for quotation.

@civilworks826 3 месяца назад

The price of concrete will depend on the price of the constituent materials (sand, chippings, water, cement) as well as the desired grade (C15, C20, C25 etc), cost of equipments (mixer, poker vibrator) and the cost of labour. You will agree that the rate will not be uniform across the country

@civilworks826 3 месяца назад

However, using the slab in the video, a rate breakdown per cubic meter of concrete can be thus; 1. Cement: 6.3 bags x 8,000 = 50,400 2. Sand : 0.7 tons x 6,500 = 4,550 3. Gravel : 1.3 tons x 8,500 =10,400 4. Water: = 500 5. Equipment (mixer, etc) = 5,000 6. Labour = 10,000 7. Overhead and profit:@20%= 16,170 8. Total cost per m3: = 97,020.

@elizabethmaswabi4757 5 месяцев назад

I have a question on the density of sand and crushed stones, according to bs 648, the density of sand is in a range of (1602 plus or minus 160kg/m^3), is there any reason you used 1600kg/m^3 only?

@civilworks826 5 месяцев назад

Well, 1600 kg/M3 falls within the range doesn't it? For practical reasons, actually.

@civilworks826 5 месяцев назад

When carrying out a mix design, you will need to establish the actual densities of the materials regardless of what the table of values state. I've once encountered gravel with a density of 1850 kg/M3.

@elizabethmaswabi4757 5 месяцев назад

@@civilworks826 it actually does, thank you sir.

@chriscastro2313 6 месяцев назад

How much water was added to the 1:2:4 ratio?

@civilworks826 6 месяцев назад

The water content is based on a water: cement ratio of 0.5, ie about 25 litres for each bag. However, this volume is just the free water and not the total water. On site, the total water is between 30 and 40 litres per bag, depending on the workability required

@voiceofthunder7345 9 месяцев назад

In this hard Nigeria who uses 1:2:4 mix ration

@civilworks826 9 месяцев назад

A lot of people, actually. If you're interested in your house lasting long without carrying out repairs every year, that initial (additional) cost is well worth it

@voiceofthunder7345 9 месяцев назад

My last question is how many wheel barrows makes 1 ton?

@civilworks826 9 месяцев назад

@@voiceofthunder7345 Depends on the material you're loading and whether you're heaping it or level in the barrow. A wheel barrow is about 60 - 65 litres (flat). More when heaped. So, when full of aggregates ie sand or gravel, it gives approximately 90kg. That means you will need about 11 wheel barrows to give you a ton

@EmmanuelMmaduabuchi-et2vx 5 месяцев назад

How come of 13.8 .

@civilworks826 5 месяцев назад

Watch to the end, the explanation is there

@queenbeyonce6922 10 месяцев назад

How many 10kg in 6.3 ton

@civilworks826 10 месяцев назад

Well, 6.3 tons is approximately 6300 kg so for 10kg, that will be 630

@edutt14 Год назад

What if we use 1m3=1000kg To change volume of cement in m3 into kg??

@civilworks826 Год назад

That will not be correct. It is water that 1m3=1000 kg, Cement has 1m3 = 1440 kg

@edutt14 Год назад

@@civilworks826 thank you

@civilworks826 Год назад

@@edutt14 You're welcome

@shadrachfahn1013 6 месяцев назад

Thank so much for your clear explanation, but you are too fast. Can you take time in your calculations please sir?

@civilworks826 6 месяцев назад

Thanks. I don't think I'm actually that fast. However , you can adjust the playing speed of the video to your preference

@rajiolamilekanyusuf7815 11 месяцев назад

You didn't consider waste in your calcution. With this you can cause dispute between client and contractor. Regards

@civilworks826 11 месяцев назад

Maybe so, but waste is a highly debatable component of the material estimate. Why should the client pay for "waste"? I think the cost of "waste" should be factored into production of concrete and not the material requirements. Great point, though.

@SARA00151 3 месяца назад

1.95 is that volume of cement ?

@civilworks826 3 месяца назад

Yes

@civilworks826 3 месяца назад

Actually 1.98 m3

@SARA00151 3 месяца назад

@@civilworks826 thank you for the video it’s immensely helpful

@civilworks826 3 месяца назад

@@SARA00151 You're welcome

@user-vb8sd1zu4r 10 месяцев назад

What is 1:2:4? 1 it is cement or sand or gravel? 2 it is cement or sand or gravel? 4 it is cement or sand or gravel?

@civilworks826 10 месяцев назад

It's the proportion of the constituents. Like 1 bucket of cement mixed with 2 buckets of sand and 4 buckets of gravel

@globaldiscovery4058 Год назад

How can someone contact u.. i need ur contact plz. Its very important

@civilworks826 Год назад

Thanks. Glad you found the video helpful. You can reach me on +234 813 7870 705. Call/WhatsApp

@InnocentSibomana-im7kx 11 месяцев назад

I need to join this group

@rabiuzayyana7817 6 месяцев назад

Please i want design a concrete mix of grade 30 that is M30 please i want your assistance. if possible i can contact you privately if you can give me your username please thanks.

@civilworks826 6 месяцев назад

Glad you found the video helpful. You can reach me on +234 813 7870 705. Call/WhatsApp