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 Residensi Wilayah JSatin, Block C crack, structural failure

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thpace
post Nov 8 2024, 07:13 AM

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QUOTE(Haru97 @ Nov 7 2024, 11:46 PM)
ehh bro, how you going to plaster this up, cause from some of the viral whatsapp video, apparently 1 side is half meter short, the whole door frame inside the unit is compressed until senyet d. How are they going to jack it up and plaster it? Or they just let the ground floor buyer deal it with a senyet roof and senyet door.

user posted image

user posted image
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aiyo.. this type of crack sap sap sui lah.. most like one the collum failure or pile cap failed

do underpinning and top up which parking to floor level again

do steel framing or hydralic support and then pump conconrete (Grade 45) to recast the wall

the bent brc reinforced with A8 or A10 BRC

This post has been edited by thpace: Nov 8 2024, 07:13 AM
thpace
post Nov 8 2024, 06:06 PM

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QUOTE(Clement1001 @ Nov 8 2024, 10:33 AM)
Boss, how much roughly this will cost for structural repair ? and how about architectural repair cost ?
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architectural minmun,, a few worker to replaster or skim back again

Structural - maybe 200 to 300k


QUOTE(HP Computer @ Nov 8 2024, 12:29 PM)
If u are the PSP/SP, are u confident to sign off for this rectification?
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if your are the PSP/SP, your will be shitting brick right now on why it failed, your design loading issue or poor material which also fall your under part under the RE scope of works

if me, i rather quickly push for proper rectification rather than fault finding at this stage. Stabilize the structure, study the cause of failure, and rectification and carry on

the fault finding come later

QUOTE(Silfer @ Nov 8 2024, 03:01 PM)
sounds good but even i not confident to stay after rectification. most proper and surekill to gain confident of customer and PR is demolish whole block and re-do.
that crack looks like structure failure on that part / section which could probably means the whole zone which was casted in that area got weak ass concrete (probably failed slump).
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it limited to one unit and more like sheer crack which indicated localized zone. plus the no severe concrete buckling seen on the sheer wall structure which could have indicatedtotal failure

repair is most likely rather than demolished whole block


thpace
post Nov 8 2024, 09:18 PM

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QUOTE(novblaze @ Nov 8 2024, 08:44 PM)
I beam support then cast back the shear wall with sika microcrete 217
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i think it would be cheaper to use fiber grade 40 pump concrete to recast back, just the formwork overlapping with new brc to support. Sika nowdays damm lansi, jack up price and limited stock.

stock only upon order even for sika 215

another solution would to forgo the unit and do pure reinforcement for load transfer. the current sheer wall just do cosmetic repair works

anyhow, the best method for now is to do steel bracing immediately and call in surveyor on any further movements




thpace
post Nov 8 2024, 09:23 PM

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[quote=yuzhe28,Nov 8 2024, 08:21 PM]
[quote=thpace,Nov 8 2024, 06:06 PM]
architectural minmun,, a few worker to replaster or skim back again

Structural - maybe 200 to 300k
if your are the PSP/SP, your will be shitting brick right now on why it failed, your design loading issue or poor material which also fall your under part under the RE scope of works

if me, i rather quickly push for proper rectification rather than fault finding at this stage. Stabilize the structure, study the cause of failure, and rectification and carry on

the fault finding come later
it limited to one unit and more like sheer crack which indicated localized zone. plus the no severe concrete buckling seen on the sheer wall structure which could have indicatedtotal failure

repair is most likely rather than demolished whole block
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You sounds like u are PEPC and practice like a layman contractor. How would u rectify a serious matter by this way???

Even an underpinning works would take weeks to redo all SI before come out with a rectification proposal.

U can blow like just a small case for u. 200-300k my ass bro.

Dont ever think you been into high rise project before. Just shit talker.

Mind to disclose ur professional registration number if u were registered to the board? Else u just talking shit
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u must one of those young engineer that want prove to contractors that your theory is better than on site experience or a consultant itself

anyway good luck to your future endeavor

I doubt you even know there something called acceleration cost but its ok.. it normal for engineer like you eat dirt 1st then only humbled by others or played by other main cons



thpace
post Nov 8 2024, 09:27 PM

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QUOTE(desmond2020 @ Nov 8 2024, 08:46 PM)
the crack wall look like a shear wall

you sure i beam is enough to reinforce it?
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temporary support which recasting


thpace
post Nov 8 2024, 09:34 PM

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QUOTE(novblaze @ Nov 8 2024, 09:27 PM)
Yes. but grade 40 takes time to cure to strength. unless get early gain concrete

another option is Bostik. much cheaper and less lansi.

But the problem is their tiles grouting sample got many air bubbles. haha

tengok also feel tak sedap. dono how to recommend them. lol
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tambah calcium formate for accelerator but kena batching on site or neaby batch plant otherwise susah mau pump

repair work take a month at least, ni hack brc and buat balik dah i consider longest method

manatau developer beli fast plug tampal balik. bukan kita tahu pun

bostik pun sika punya.. just lower grade cheaper sikit
thpace
post Nov 9 2024, 08:37 AM

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QUOTE(goodiemangold @ Nov 9 2024, 07:17 AM)
How to estimate 200~300k basing on just photos and videos without knowing the reason or even cause?

Why is PSP and not only SP coz this is under structural if it's design loading and material as what you mentioned? Why design issue also fall under RE scope?

If it's you, you will rectify first. But how do you know the people are not rectifying first?

What is sheer crack? Why isn't it Shear crack?
And if it's Shear crack, how does the wall fail in shear when bending and compression is always the most critical force instead of shear?
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from the photo, you cant determine the cause? maybe u need more experience

why PSP? again u need more experience. Hint, who ultimately sign the borang F? PSP or SP?

why not RE scope? if material quality issue, it fall under the RE for his quality inspection prior to casting same goes for the BRC inspection if it not accordance to design

do u understand what is a sheer wall design compare to column and beam design? how does it work and how it load bearing principle is?

This post has been edited by thpace: Nov 9 2024, 08:47 AM
thpace
post Nov 9 2024, 08:44 AM

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QUOTE(desmond2020 @ Nov 9 2024, 08:40 AM)
Professional engineerimg firm punya professional liability insurance lel
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should the main con all risk on rectification

PLI only if confirmed is due to design or supervision issues
thpace
post Nov 9 2024, 10:34 AM

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sure sure.. keep being in consultant and be theory king

 

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