forgot to reply this. yes, I like prefab. the correct term is called IBS aka Industrialized Building System.

following is just my opinion. I actually like IBS. however it seems very difficult to practice here due to the high expenses of doing pre-fabrication. huge equipment expenses require. pre-fabrication require higher cost of construction cost and hence until now not much company wanna adopt it. perhaps the recent capital allowance to increase automation in labour intensive in budget 2015 will encourage the purchase and usage of equipment and more IBS? just my thought.

those are crane operator. no idea whether they need licence to drive those equipment or not. should need ba. all these while just order directly from machinery renting company. those machinery renting company will rent the machine inclusive of operator.

because hammerhead span too long. especially at klang valley, the site is small hence hammerhead tower crane span beyond the boundary of site which is prohibited by local authority.

apply tinting on your windows. beside that there other way is to get a contractor that do a layer of gymsum board on the wall, apply a layer of rockwool on the wall surface b4 use the gypsum board to close up. but not cost efficient i think

mean u spend more overall. or maybe u need save 10 years electric bill get back those cost? plus when u put rockwool and gypsum board, ur wall set back a little bit. make ur room smaller.

brickwall generally not good in thermal insulation

to save that better get inverter aircond

oh ya, overall u still can be green (save energy and sources of thing)
1. fix rainwater harvesting tank to collect rainwater for flushing toilet
2. fixing solar panel (but not really cost effective at the moment as it is so expensive)
3. put more glazing panel at windows so fully utilize daylight
4. LED light fitting for lesser energy consumption
Sime Darby is going toward this direction when developing properties.

is it more economical to build a house with concrete beam or steel beam?

how about the cost of building a basement/subterranean level. what factors need to be put into consideration. is it advisable to do so in malaysia, considering our climate, soil condition etc?

how about the wall building purposes, is it better to use red bricks, cement bricks or glass-wall? how about its thermal insulation property, as im considering passive cooling design for the house as to lower ac usage.

thinking of a 2/3 storey detached house with minimalist styling. thus its spacious and airy with lotsa light coming in, thus the question with the glass-wall...

thanks for entertaining the questions... got lots to learn anyway 

for tower crane, they use mobile crane to fix tower crane at bottom. then the tower crane will keep add the mast on itself to increase its height. can found those video on youtube in fact.

for backhoe, normal construction work don't need it at top level. but of course got exception got certain case. demolition of building usually need backhoe on the of building if it were to demolish 1 by 1. and yes, they use mobile crane to lift up the backhoe to the building. u will surprise that there were actually 500tonne mobile crane available for rent. daily rental could be abt RM50k a day.

carpet? sure resistant to scratch