Kindly continue this kind of videos its really helpfull

Great job

@michaelw.evansc.p.m11

8 ай бұрын

Thank you

@bonfacemuchiri6850

8 ай бұрын

@@michaelw.evansc.p.m11 welcome

Thank you for the information you have provided. In my opinion, the roof might be weak because of a mistake that needs to be corrected. First of all, we are using in our slab heavy cement blocks, and we must always be aware of the possibility of deflection. This type of roof consists of three elements, which are Beams, Hollow blocks, and a small beam which goes between two rows of hollow blocks (Ribs). Your steel bars appear not to be in the ribs since you left the area empty.

@michaelw.evansc.p.m11

5 ай бұрын

Thanks for the observation but if you looked keenly the rib bars are in place. Single rib bars in sizes of D16 and D20, placed with spacers and centrally positioned within the rib space

You do it like a Master 👏👏👏👏

This is great, Mike. Keep the spirit going.

@michaelw.evansc.p.m11

3 жыл бұрын

Thank you bro

Great job sir

This is amazing!!

@michaelw.evansc.p.m11

3 жыл бұрын

Thank you

Great job high school class mate. For sure i have subscribed to your channel. Keep going bro.

This is a great job. I'm glad I discovered this Channel. Keep it up!

@michaelw.evansc.p.m11

3 жыл бұрын

Thank you Maryclare. I really appreciate your positive feedback🙏🙏🙏

This is wonderful Mr Michael... Keep it up

@michaelw.evansc.p.m11

3 жыл бұрын

Thank you

Very helpful

You have come a long way bro. Great content

@michaelw.evansc.p.m11

3 жыл бұрын

God bless you

Good job.

@michaelw.evansc.p.m11

3 жыл бұрын

Thank you

Good work P.M

Good work dear Michael ,much love from 🇷🇼

@michaelw.evansc.p.m11

3 жыл бұрын

Thank you so much dear. I appreciate your support

Wow Thank you sir😍

@michaelw.evansc.p.m11

2 жыл бұрын

You are welcome

Keep it up

@michaelw.evansc.p.m11

3 жыл бұрын

Thank you

Thanks for the valuable info. By the way how do you calculate the a mount of hollow pots needed for the slab? If you don’t mind me asking. Thanks again

@michaelw.evansc.p.m11

2 жыл бұрын

Hello salaam. This may vary depending on the design or how the hollow pots have been laid. The easiest way is to look at the drawing and find out how many pieces are required for 1M², then calculate the entire surface area of slab. Finally you multiply to find the total

Hi Mr

How many days did it take for every stage to be completed?

@michaelw.evansc.p.m11

9 ай бұрын

The entire process from setting out of beams, fabrication and installation of formwork, steel reinforcent works and placement of hollow pots took 4 weeks, then concreting 3 days. However, the amount of time will vary depending of the size of slab, the amount of labor you put in place and availability of all materials to be used.

Where are the pipes for electrical installation?. Are they not to be embedded in d concrete slab before casting?

@michaelw.evansc.p.m11

3 ай бұрын

the pipework is in place. all the services were taken care of before casting. Check from minute 14 of the video, you'll see the pipes

Good clip, Michael. Are hollow pot slabs cheaper than the conventional slabs and if so, how much cheaper?

@michaelw.evansc.p.m11

3 жыл бұрын

Hi Njogu. Thanks.... Now to answer your question, hollow pot slabs are cheaper especially in huge spans where when you design slab thickness goes beyond 175mm thick. Cost reduction could be as high as 30-40%. But if you had a 150mm thick slab[for smaller spans] then substitute it with a hollow pot slab, the cost is relatively the same

@njogumwaura8399

2 жыл бұрын

@@michaelw.evansc.p.m11 Thanks for the response Michael. Does one need to make special precautions for wet areas or the roofing slab

Hey Michael. Great content. Learnt alot from you and will be waiting for your next video. Quick question, do you ensure that the rebar between the hollow pots are tied to the beams or that is not necessary? Secondly what size of rebar and how many did you have between the hollow pots?

@michaelw.evansc.p.m11

3 жыл бұрын

Thanks for your positive comments.... We usually tie the rebars to the beam mostly to ensure that it doesn't shift out of position during placement of concrete

Hi Evan's, good content however I have a concern. How did you take care of shear Forces at the edges of the slab ie where the slab connects to the beam. I think the region should have solid slab up to some distance since hollow pots can not resist shear

@michaelw.evansc.p.m11

3 жыл бұрын

Hi Dan, thanks for your reply and concern towards this hollow pot slab design. First of all I hope you recognize that this is a one way spanning hollow pot slab which means Reinforcements run along the effective spans only[one direction] If you take a close and keen look at this slab you will discover that shear has actually been taken care of... At the slab edges we have the rib bars having a u-return profile of about 1200mm. At the midspans we have a layer of T10 @200mm c/c top Reinforcements on every beam which spans about 2 meters on either side of the beam. This are placed before the BRC mesh Reinforcement is rolled over. They take care of the shear

Can you give us a breakdown of the price for each piece of precast slab?

@michaelw.evansc.p.m11

2 жыл бұрын

The price will entirely depend on the size of the slabs

Mach 18 letters for 8m for slab

Why are all Slabs Designed as 1 way. When some look like 2ways

Your beams are not properly done. The rebar should be more on the underside than the top. That's where tension is. And your concrete mix is too weak and runny. Otherwise good to see a different take on slabs in ke 😉

@michaelw.evansc.p.m11

3 жыл бұрын

Hello Mr George. Thanks for your comment but I beg to differ with you on your thinking that the beams are not properly done. If you look at those beams carefully, they have heavy Reinforcement for bottoms [as large as T32] and tops are relatively smaller [largest top Reinforcement is T16] except for the cantilever beams which have larger bars[T25 and T32]. For the concrete it could look a bit runny but as per our slump Test we are within the acceptable limits. This slab is about 20 meters above ground and if we did less workable concrete then it would pose a placement challenge due to the concrete setting fast.

Why shy nigga 😂but gret work

@michaelw.evansc.p.m11

3 жыл бұрын

Hahaha I never knew I was shy😂😂😂