Two Way Slab Design with Rebar Detailing - Tagalog Tutorial
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- čas přidán 17. 09. 2021
- This video will guide you how to analyze two-way slab by coefficient method. At the end, it will show you complete illustration of how to place rebars properly.
The more I watch your content, the more I become interested to learn for more. This makes me pose a question.
Thanks
Although I don’t understand Tagalog and i wished there was English subtitle but thank you so much engineer the method was unique and clear 👍🏻
Very educational and informative explanation from one of the best pinoy structural engineer much respect. Keep it up sir. More power!
Kudos to you Sir! Thank you for sharing your knowledge! Mabuhay po kayo!
thank you po sa mga aral na binibigay mo sa amin
Thank you po sir! Malaking tulong 'to . Godbless po.
Grabee sirr diko pa natatapos video malaman yung topic thanks po sa info nakafollow nadin ako 😮
Salamat po. natapos yong design ko sa slab dahil dito. pati n sa truss
Thank you sa tutorial sir. very helpful.
very informative, keep making videos po sir.
thank you sir!
Good job engr
Maganda makakatulong sa aming mga trabaho
Also you need to check the longterm deflection if required. 😊
Great explanation sir. Thank you. Can you explain sir. Can you explain next sir ung paggawa ng schedule of one way and two way slab.
Thanks for this video great video! I’ll just want to ask how the crank bar applied in the slab?
Very informative and clear presentation, May I suggest po, pwede po kayo gumamit ng electronic device digital pad to write all this note and be able to save this important. You can write all this using one note in microsoft
I so much enjoy your lectures though I don't understand the language used. I do a lot of guess work while listening to them. Can there be an English version of your tutorials?
very technical, informative and yet concise! sir ask ko lang baka meron na kayo video about how to deal or repair honeycomb on structural members (beams, columns, slab). Thanks in advance!
Best treatment sa honeycomb is epoxy injection para ma fil-up lahat ng voids sa loob pressurize kasi yan.
Do not fill it with cement mortar its not a structural solution sayang lang hindi yan makaka tulong. Thanks
@JSDesign_EngineeringTV thank you sir. yun nga iniisip ko. kaso wala ako makikitang video on how to do it. wala ring marunong gumawa sa area namin. ano po ma i recommend ninyo na brand ng structural epoxy? sana po may video kayo sa process/procedure ng paggawa nito. thanks a lot sir.
@@tommacabulostoledo Meron formwork yan then sealed around para hindi lumabas during process, specialty contractor gumagawa nyan may machine sila to pump epoxy
sir yung sa @26:47,case 2 and X-direction,yung sa may supports/extra bars,paano malalaman kung saan yung continuous at discontinuous? ginamit nyo po kasi yung 300mm(continuous) sa right side,wala rin po kayo pinaggamitan nung 600mm(discontinuous) na spacing
Hi sir, I hope you can post calculation examples of solid concrete roof flat slab (no beam) cantilever. This kind of computation is very rare or does not exist in some class examples compared to the common cantilever slab with beam which is always being used in classes.
Sure, but for the mean time please watch this link czcams.com/video/5VE_FaOIseo/video.html
Thanks sir, clear explanation, tanong kulang sir similar sa ginagawa slab pero may existing Beam pwede patong nalang sa biga yong slab?....thanks
I suggest, chip-off small portion of beam to expose top bars. Then install L-shape rebar studs spaced at 600mm x 100mm deep (min) by drilling and fill-up the gap between hole and rebar with epoxy. Avoid creating huge vibration use small drilling machine. You don't need to chip off the entire length just the portion of studs but roughen the entire top surface of beam to achieve better adhesion with new concrete. Put adequate support beneath the existing beam while performing the task. I hope that helps
Is there a way in your method sir to check for deflection (serviceability) and for shear capacity? As i see from your calculation, you only consider flexure.
Yes, you can always check against deflection. It depends on architectural limitation that is why I dont normally show it in presentation but for building permit application we need to include all required parameters. Thanks
sir paano po naten ilagay yan sa slabs eh bawat panel ng slabs magkakaiba ang spacing ng bawat bakal?
Sir can you share the table of coefficient?thanks you sir
Yung pong sobra sa bot bar na tumawid sa kabila pwede dun mgsplice para sa bot bar Ng next slab?
I suggest mag alternate ka ng splice sa bottom, ex. Splice at panel 1, next splice at panel 2, follow that pattern. Thanks
sir puwde humingi ng aci table..?
what is the criteria of using fy of 275 Mpa & fy 400 MPa. When are we going to use these stresses. Because as I saw your computations , you used 275 for slab reinf and you used 400MPA for column reinforcement. I know that is dependable of the steel grade. But when can we use those grades.
For me it all depends on the designer there is no criteria. Basically if you use 275 it will require more number of rebars than 400 right? But I suggest 400 is better on tight spaces such as walls and columns because we need less rebars to avoid congestions. In relevance, matching concrete-rebar is also an ideal factor, ex. for fc21 should match with 276, for fc28 or above use use 400. Hope that helps
@@jsdesign_engineeringtv3633 salamat po sa sagot. pero yung commercially available sa mga small hardwares na usually ginagamit. anong grade po yun?
@@jackpat5643 If you are not sure assume Gr33 or 220Mpa
Good eve po sir. Ask lng po ako. hindi po ba applicable yung formula ng thickness of slab na t= (s+l)2/180 sa two way slab ? and ano po basis nyo sa t is 145mm sir ? gusto ko po mlaman pano nyo na decide po yun . pwede din po ba iba yung thickness ko sa one or two slab same floor lng sila.
tama yung preliminary calculation mo t=(s+l)2/180 yan din ginagamit ko but you need to add concrete cover say20mm clear plus yung centre ng rebar 6mm. But you need to anticipate if there is in need of 2 layer bars (top & bottom) clear space between them say 50mm check mo kung papasok yung prelim calculation
Engr, Idol ask ko lang po.... yung sa case 3 natin,, since may beam pa naman siya dun sa discontinuous edge, and hindi naman considered cantilever,,, bakit di na po tayo nagkabit ng topbars sa discontinuous edge?
Meron moment but that is negligible. Thanks
Pag beam or column design ang L clear span Lclear/4 bakit po pag slab L from center of beam support?
Actually it should be L/4 whether beam, slab , or column. We only care about clear height on columns to check its slenderness.
Strictly speaking its not always L/4, we should figureout stress diagram from analysis if you really want the exact value
Bu to me there is no big issue about it
Thanks
Sir di ba po ung L/4 ay sa center ng beam so ung extra bar * 2 166mm *2 kung lagpas sa beam
Yes, total extra bar length
Sir, gud day! Pwde yo po bang e share anung coefficient ng case no.3..for midspan and support...god bless sa channel nyo...salamat po, in advance...antayin ko po responce nyo....
it will be very impractical for the steel man/worker to measure 166mm spacing of rebars.
We knew that, but sometimes we just need to show what the calculation says, and then at the end the designer should finalize the result in the most practical manner. Thanks
Hi Sir, wla napo bang temperature bars sa two way slab,,lahat napo b ayy 12mm lahat ung bars?
Basically for 2-way slab both direction are main bars thete is no temp bars
Hello po sir, can you post the download link for the excel file of the ACI coefficient table? The video helps a lot
sir pwede po ba makahingi nang table?
Good day sir pwede po makahingi ng copy ng two way slab coefficient table. Thank you
salamat engr for the info pero sana mkita sna ng close up yung sinusulat mo ksi pahalang yung camera mo..😁
Sorry about that, I will focus the camera next time. Try to watch it in a bigger screen like tv or computer to see it clearly. Thanks
@@jsdesign_engineeringtv3633 cellphone user lng po 😁, salamat po s sagot
Sir pano kung magkaiba ng elevation sa katabing slab panel consider continuous pa rin po ba yung side na yun?
If elevation difference is equal to or more than it's thickness that is considered as discontinuous. However, if the split in elevation is equal to it's thickness there should have enough overlap between 2 slab panels to accommodate rebar hook or rebar termination. Thanks
@@jsdesign_engineeringtv3633 Sir hello po. may provision po ba tayo dyan sa maximum elevation para iconsider po na cont. or discon. sa NSCP or ACI? Thank you po
@@clutchplays4116 Can't remember, maybe there is, you can check.
Remember that code always provides a minimum requirement.
Therefore in the absence of information, a designer should introduce its own parameters to suit the demand. We call it "engineering judgement". Thanks
@@jsdesign_engineeringtv3633 thank you so much Sir
Sir, can I get a copy po of your ACI table?
Sure, pm your email to my fb page. Thanks!
Hello Sir, paano po ang latag dun sa case 3 top bar sa side po ng stair. Hybrid po ba ang analysis dun? May part po kasi na discon sya(due to stair) and part din na cont (adjacent slab) . And sa video po ang binanggit nyo lang na boundary ng top bar is dun sa may adjacent span lang po. Salamat po
You can treat that part (immediately beside the stairwell) as discontinuous edge. Thanks
Hi sir, pwde ka maka share anung coefficient, C, ang gagamitin for case 3, at midspan, discont and continuous, then at support for cont and discontinuous, thanks in advance...god bless
Sir ask ko lang po san pwede makita ung table na ginamit niyo?
Sure, pwede naman
san po pwede makita? or pwede po makahingi ng copy? nag search po kasi ako online wala nag mamatch... And may discussion din po ba kayo ng cantilever?
Visit my fb page same name as yt and let me know your email I'll send you a copy
Engr good evening pwedi makahingi ng ACI TABLE. thank you
Sure, what is your email sir? Thanks
Good day po Sir, pwede makahingi pong ACI Coefficient Table? Thank you po .
Pm your email to my fb page(same name as yt). Thanks
Good day po Sir, Puede maka hingi ng link sa ACI Coefficient Table. Mag kaiba kasi ang na google ko. Thank you po.
Sure sir, I wonder if I already have your email address that I can send it? if not, please message me in my fb page same name as my yt channel. Thanks
Hi sir new subscriber po. Makihingi din po ako ng ACI coefficient na gamit niyo. Thanks po
Good day, sir. Saan po matatagpuan ang book kung kung saan nakalagay ang ACI codes? Nasa NSCP po ba?
ACI is an independent book particular for concrete, but NSCP is complete it covers all types of structure. Thanks
@@jsdesign_engineeringtv3633 Engr, good day po! Where do we find ACI book po? May I see the front cover para po mabili. I see na ginagamit niyo po kasi siya.
I mean you can buy ACI book if that is what you want, look for the latest edition I think ACI318-19. Thanks
@@jsdesign_engineeringtv3633 Thanks for an immediate response, engr. God bless po! Stay healthy always!
Good morning! I am always watching your tutorial. I am interested to have one ( if possible) to get one copy of video complete concrete design. And how much will be the cost. This is my email address for your reply.