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 Ask me anything abt Construction Industry!, Q&A

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TSiwubpreve
post Oct 17 2014, 01:30 PM, updated 6y ago

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hey guys, u may ask me anything about construction industry and i'll try my best to answer all ur question.
biggrin.gif

u may join this group too
https://t.me/joinchat/GnpHTxbi4CFMfOC6SSWSgg

Construction Industry is so complex and actually affect various party namely,

House buyer / Purchaser
Developer
Consultant (Architect, Engineer and etc)
Main Contractor
Subcontractor / Vendor / Supplier
Local Authority (DBKL, BOMBA, SYABAS, TNB, TELEKOM, POS, JKKP, IWK and etc.)

u can also ask me about construction law. I know a lot abt that too biggrin.gif

This post has been edited by iwubpreve: Mar 13 2019, 01:36 PM
TSiwubpreve
post Oct 17 2014, 05:08 PM

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QUOTE(Error404 @ Oct 17 2014, 03:18 PM)
How much 1 kilo simen?
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OPC (ordinary Portland cement) is control price item. RM17 / bag. 50kg per bag. minimum purchase is 400 bag la. when unload the cement from trailer they will charge abt 30 cents / bag.

if u only wanna buy 1 bag, hardware shop sell RM20++.

cement will "expired" also. mean those cement that remain unsold for long period after manufactured. so those cement will sell at control price minus RM2 or RM3. just like BLR -2% something like that.

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TSiwubpreve
post Oct 17 2014, 05:10 PM

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QUOTE(ThanatosSwiftfire @ Oct 17 2014, 03:40 PM)
Why are subcontractors so terrible? Why mrt keep accident. Why locals dowan to work in construction?
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this is more on safety precaution. anyway need to differentiate what is accident and incident. some could be prevent if done proper precaution. some cannot as it is unforeseen. clearly MRT is due to negligence of all parties.

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TSiwubpreve
post Oct 17 2014, 05:14 PM

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QUOTE(pijaklu @ Oct 17 2014, 02:52 PM)
Recent fuel hike just kicked in for another 10% increase. Will the manufacturer and supplier increase their construction material selling price? Is the main contractor and sub contractor also demanding certain compensation due to this fuel hike?
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fuel hike is impact on everything. this is called domino effect. however, in order to be competitive in construction industry, u have to bid the lowest u could. however please take note that this only apply on transparent bidding process, if u know what I mean biggrin.gif
TSiwubpreve
post Oct 17 2014, 05:15 PM

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QUOTE(MeToo @ Oct 17 2014, 05:12 PM)
Why no hot girls working as labourer in construction industry?!
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not suitable for girl working there. there do have some girl are engineer, but very very less. but there have a lot of girls worked as QS.

generally girl is not suitable.
TSiwubpreve
post Oct 17 2014, 05:19 PM

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QUOTE(dkk @ Oct 17 2014, 04:21 PM)
The packing is 50kg? Do they come in smaller packing? Maybe 10kg, so when can put in car boot and haul back home. (For DIY home improvement project).
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yes, standard package is 50kg. government control price is RM17 but will up down up down like stock market. those hardware shop repackage it into 1kg per pack also have. RM2 per kg. so u know how much they really earn. RM100 selling price when they split the 50kg pack when actual they just paid for RM17 for 50kg. but of course, minimum order is 400bag in a trailer in order to get that price. deal with trading house normally.
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TSiwubpreve
post Oct 17 2014, 05:24 PM

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QUOTE(unequalteck @ Oct 17 2014, 04:47 PM)
Not all subcon are bad.

Not only MRT, almost all construction sites got accident occurred, for MRT such huge project just 3-4 cases considered very less d. Other small project maybe ur current house got pipu died during construction period u also dont know.

Cuz will old faster and low pay. Just like Singapore construction always got vacancy for Malaysian or Indonesian engineer. Because Singaporean want work inside office.
FYI for project like MRT, people in mmc gamuda who doing all these paper work is very high paid
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there are many type of contractor. like local chinaman contractor, in order to increase profit they usually spend less on preliminary cost. for Japanese and Korean contractor, they care about safety so much. they truly practice safety first profit second kind of concept.

u know what are those cost would be spent in safety issue? there are plenty
1. sufficient scaffolding
2. sufficient guard rail (on high rise building)
3. safety net (those green colour u saw usually from outside)
4. competent safety officer that do his job well
5. well maintenance on machinery especially tower crane, passenger hoist
6. daily assembly to educate those foreign worker on daily basis
7. a lot more..
TSiwubpreve
post Oct 17 2014, 05:33 PM

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QUOTE(pijaklu @ Oct 17 2014, 02:54 PM)
I found out that recent quarry materials are hard to secure good grade in compliance with condition of contract. The supplier keeps throwing excused that quarry material in good grade are hard to produce due to irregular mining source or being closed down by authority, but our client not buying this excuse. What way to protect our best interest?

If you insist good grade, supplier will sell you like 30% higher rates. It is common nowaday?
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if u work as contractor, what u have to do is very simple, just be genuine and do what is right. this is because contractor just a middle person, u are in between client and supplier.

what u have to do is to get few supplier to get the specific item u want, what grade. and tell them u also get other to quote the same thing. so they will felt pressure and quote u according to market price.

eg. let say got a project demand conquas standard (mean very high quality when come to standard), and u ask a subcon to quote u for let's say plastering work. usually they will tell u "hi mr. contractor, I will give u 2 rate, 1 is conquas rate 1 is normal rate". just reply to them, "hey mr. subcontractor, just quote according to the project specification. i'll get other to do the same thing" so they will felt threaten a bit coz they can't quote high if they want to get the job.

so u just have to get few cost comparison and the market price will surface to u.

true story biggrin.gif
TSiwubpreve
post Oct 17 2014, 05:36 PM

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QUOTE(MeToo @ Oct 17 2014, 05:32 PM)
I used to do civil work. lady QS and engineer seen before la... but I wondering about female general worker la

» Click to show Spoiler - click again to hide... «

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hot girl will get better pay in other job, so why suffer in construction work?
TSiwubpreve
post Oct 17 2014, 05:40 PM

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QUOTE(pijaklu @ Oct 17 2014, 02:57 PM)
Workmanship and quality issue.

Indonesian workers wont bulge in giving competitive rates for supply of labours. no doubt their workmanship is average satisfy but their high rates nowaday are killing the industry. They are very demanding nowaday, unlike old day.

If we opted with Bangala or Nepal or Vietnamese as construction workers, although their wages are much cheaper than Indon, but 80% of them are unskilled and lazy.

What would be the best way to overcome this labour issue?
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u get what u pay for. cost of labourer from high to low. skill also from high to low.

1. Chinese labourer (mostly is carpenter (furniture), plasterer)
2. Indonesian labourer
3. Myanmar / Pakistani / Vietnamese
4. Bangladeshi

this u have to control yourself. I can tell u u get an Indonesian worker, ur quality might not be achieve the satisfactory u want. u have to get qaqc to control the quality of work and rectify when it is wrong at the beginning. not just about labourer. qaqc does matter too.
TSiwubpreve
post Oct 17 2014, 05:44 PM

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QUOTE(pijaklu @ Oct 17 2014, 03:01 PM)
Main Contractor profit margins. Years before 2008, Main Con still can secure a project at least with 15% profit margin

But nowaday, Main con are suffering thin line of profit margin around 5% to 10%. That if there are no excessive wastage,  site corruption and LAD imposed.

Are Main Con business secured nowaday? From my opinion, 8 out of 10 Main Con firms nowaday are poorly performed.

There are no association in malaysia that will safe guard their best interest from these main con. I believe CIDB and MBAM only interested with big player Main Con.
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main contractor have to be competitive to get the job. u mark up 15% how u get the job? a competent contractor that know how to plan the work well, they just mark up 3% to 4% as they already have in mind how the work would look like b4 start the work. able to foreseen what would happen during construction and hence prevent a lot of unnecessary expenses. they get additional profit through VO work.

nowadays, high end project mostly is cost overrun. why? because quality always failed. they have to spend extra cost to rectify those poor quality of works. high end project demand good quality of product. u know u spend 1 million on a unit, how fussy would u be?
TSiwubpreve
post Oct 17 2014, 05:49 PM

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QUOTE(call me random @ Oct 17 2014, 04:39 PM)
rclxms.gif

i hv a question.. this tered here

https://forum.lowyat.net/topic/3381419
icon_question.gif
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hi there, good question though irrelevant to my thread. if I were u, I will foreseen the unforeseen. i'll put myself in the shoe of interviewer and think critically what would I ask the interviewee. let's said if I wanna interview a company for a position, I will study their company background. and imagine what kind of question they will ask by pretended I'm in their shoe. maybe they will ask me what is the reason I change the job? why I want to leave current company? what are the strength I have? and etc.

when come to paperwork of course u have to let them know u are sincere. like resume have to put a picture there. will put the detailed information they wanted to know such as what kind of project u handle b4, how much the project worth, the reason u leave. this will show to them they u are genuinely want to get a job and prepared for it. this also reflect ur attitude long b4 they see u personally biggrin.gif

This post has been edited by iwubpreve: Oct 17 2014, 05:52 PM
TSiwubpreve
post Oct 17 2014, 05:59 PM

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QUOTE(unequalteck @ Oct 17 2014, 05:54 PM)
Yes, my company got a project with Japanese contractor, they are really discipline and put safety as their first priority, but definitely not mrt project
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what ur company doing? Japanese contractor got class 1. like first tier contractor, 2nd tier contractor. first tier is like shimizu, takenaka, taisei and etc. they all listed company in Tokyo. 2nd tier are plenty.
TSiwubpreve
post Oct 17 2014, 07:11 PM

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QUOTE(Showtime747 @ Oct 17 2014, 06:22 PM)
Isn't the control price increased ?

And what is the rebate now ? Got to consider that also. Recently got price war ?
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about 17 plus minus. will increase decrease 1. some trading house give u rebate is because the cement keep too long already. so they sold it cheap to clear the old stock. will hardened when in humid weather if keep it long time
TSiwubpreve
post Oct 17 2014, 07:13 PM

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QUOTE(unequalteck @ Oct 17 2014, 06:55 PM)
So the site engineer need to do slump test.
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wrong bro, slump test to test the mobility of concrete la doh.gif

This post has been edited by iwubpreve: Oct 17 2014, 07:14 PM
TSiwubpreve
post Oct 17 2014, 07:50 PM

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QUOTE(Xisuka @ Oct 17 2014, 06:32 PM)
1. There are many types of concrete, how to order?
Malaysia have which type?
When we buy cement via the concrete truck, how to know if thye give the correct concrete we want?

2. Why always every flats, apartments, condos and high rises have leaking problems from floor above after 10 to 15 years?
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concrete is just 1 type. depend what the strength of concrete u want. eg. if u order grade 40N concrete, mean that concrete can stand the force not below 40N/mm2. like he said need send to lab for cube test. however 21 days only u will know the final result as concrete need 21days to achieve that result which is 40N/mm2. usually after u cast a level, consulting engineer not allow u to cast another floor because they want o see the result first. but then also they don't want to hinder the process of work therefore they get the 7 days result. 7th day if got achieve desired strength maybe around 30N then they allow to proceed casting of next floor.

among so many readymix concrete supplier, YTL subsidiary aka buildcon concrete sdn bhd is the smartest concrete supplier. why I said so? the concrete they supply can achieve very close to 40N for 21 days strength maybe like 40.5N or 41N while the rest of concrete supplier achieve more maybe like 44N or 45N. yeah u not heard it wrong, why I said smart that YTL achieve close to 40N which less than other? it's because in concrete, the expensive ingredient is cement. the more cement, the higher the strength. YTL just so precise enough to control the quantity of cement they use so they won't use more but at the same time still can achieve the desire strength. the other supplier will use more because they afraid that the concrete strength will fall below hence they rather spend more cement and subsequently they can't achieve the best optimum qty like YTL do.

to answer ur 2nd question, it is due to the waterproofing layer damaged. it could be many reason, poor workmanship, when owner doing renovation punch through the layer. anyway, only kitchen, toilet and balcony require waterproofing layer on floor.

usually waterproofing vendor will give like 20 years warranty 1.
TSiwubpreve
post Oct 17 2014, 08:00 PM

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QUOTE(Xisuka @ Oct 17 2014, 07:31 PM)
1. There are many types of concrete, how to order?
Malaysia have which type?
When we buy cement via the concrete truck, how to know if they give the correct concrete as in Type, Quality and Quantity that we want?

2. Why always every flats, apartments, condos and high rises have leaking problems from floor above after 10 to 15 years?
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oh ya, concrete only 1 type. however there are additive can add depend what requirement u need. some additive meant for waterproofing, so by add that u have waterproof on the specific area u use. water very difficult to seep through. usually they apply this on ground floor which expose to weather while below is basement. then they apply 1 more waterproof layer before floor tile or stone so they have double protection.

there are other additive to increase the workability of concrete. normal concrete have slump test result 50mm +/- so the concrete will set very fast and can't travel long and flow not so smooth hence less mobility. use to cast the area where travel of concrete is minimal. by add the additive u achieve 75mm+/- and the concrete will not set quickly and flow well. we called it pump mix because when concrete got longer distance to travel, example from ground floor to 15th floor, u need that so concrete can flow well inside the pipe where they use the pump to pump it to higher level.

higher slump test result mean the concrete more watery la biggrin.gif
TSiwubpreve
post Oct 17 2014, 08:06 PM

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QUOTE(CloudAtla$ @ Oct 17 2014, 07:48 PM)
Wat is the difference between marble and granite? where we use this material?
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both marble and granite is stone. extract from mountain usually. difference is marble is fragile compared to granite. but marble got vein. the vein on the surface make it so beautiful but at the same time those vein is the thing make it fragile. water might seep in, and also that is the fragile part where crack started.

granite is just 1 tone and look boring. it look consistent but also boring. some architect want very natural design hence marble give them the natural look which fit their requirement well.

marble - black emperado
user posted image

granite - black Galaxy
user posted image

TSiwubpreve
post Oct 17 2014, 08:13 PM

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QUOTE(Xisuka @ Oct 17 2014, 07:56 PM)
Thanks, for the valuable info.
So which readymix concrete grade is better?

I also understand that there are many types/methods of waterproofing. But which ones are better or reliable?
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depend what u want as I said. example floor slab usually require grade 25N concrete. of course u can use grade 40N but for what wasting that money to get more strength than what it require? wall and column require grade 40N concrete. anyway the strength of concrete doesn't support ur house. the 1 which give the strength to support the entire building is the steel bar inside the concrete. concrete just give a little compressive strength and protect the steel from rusty. biggrin.gif

waterproofing which 1 better? of course is membrane type la. abt RM90/m2
TSiwubpreve
post Oct 17 2014, 08:16 PM

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QUOTE(CloudAtla$ @ Oct 17 2014, 07:48 PM)
Wat is the difference between marble and granite? where we use this material?
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ops, forgot answer ur 2nd question. marble and granite us natural stone hence look aesthetic. use on floor, wall, kitchen counter top, island. no budget then use tile la. biggrin.gif

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