how many sqft u want? RM150 to 175 u are good to go. legal fee is abt u borrowing money from bank?

no much idea but definitely paskal know very well on this. can refer more detail at following thread.
https://forum.lowyat.net/topic/3207996?author=paskal

loan is like charge ur land to bank and get the loan lo.

that's good that u curious on the thing u saw around u.

that 1 actually is ultimate load test on the completed piling work. test the integrity of the designed bearing capacity. the big big cube is the weight to be loaded on the completed piling work. to test if the pile can withstand those loading b4 build the real structure on top.

something like this:
pile working load test with Kentledge method

opps, we google the same thing
coincidence la

(1)
very easy to calculate. for 1000ft2 of 25mm thk 1:3 cement sand screed = 92.93m2 (convert to meter square) = 2.32m3 (convert to m3)

cement density is 1600kg/m3
sand density is 1700kg/m3

2.32m3 x 0.25 x 1600kg = 928kg
928kg / 50kg = 18.56 or 19 bags allow some wastage la 21 bags.

(2)
there is no layer of cement. it's concrete which is the mixture of cement, sand and aggregate. the ratio is 1:3:6 for grade 30 or grade 40 concrete if I still can recalled. they either use rebar or wire mesh. 2 layer usually, top 1 bottom 1.

(3)
depend on design. footing alone usually enough. however some case they require tie beam connecting all the footing / pile cap.

(4)
shear wall required to resist the lateral load especially on high rise building, the wind load is increasing as the building is higher. therefore shear wall is require. they will positioning the shear wall at the center of building. if the building is big, then they will position it center of each half of the building. staircase and lift core is the place they choose to form the shear core by constructing the shear wall.

(5)
u need to drill a hole to existing structure and plant a rebar as dowel bar. then new beam rebar will lap to that dowel bar. usually engineer will recommend how long the depth require to embed the dowel bar and what type of epoxy glue require. these are the thing u not suppose to propose urself instead get their approval to use as that would be the integrity of structure.

generally u need approval from local authority irrespective whether it has or doesn't has anything to do with structural integrity.

nowadays agent will charge main con abt 80 per bangla. then they actually pay 40 to that bangla
per day.

provided it's approved material then it won't la. nowadays china product is cheap and compatible to client need. ur roboh more on structural element. provided those structural element of product is accepted by consulting engineer, it won't collapse.

selective tender. mean the tender is not transparent. in open tender, after all the bidding process, they will publish from lowest bidder to highest bidder. then who are the 1 selected. in selective tender, none would be shown. see the detail price and u will shock when got songlap.

(1)
u don't need a degree to build. u need management skill la. there are degree in construction management nowadays. however experience is what u need for a contractor. degree is require for engineering & being a architect I suppose.

(2)
in construction got 2 cost involve, 1 is cost for temporary work another is cost for permanent work. these hacking / removal of work is considered as temporary work that require quite a lot of manpowre and machinery and therefore will increase the cost of renovation. workmanship is still same. but in market there are different rate of workmanship when come to different trade. Joinery worker aka carpentry usually will cost high nowadays compared to other like bricklayer, plasterer.

also the other factor contributed to high in renovation is because of small quantity.

really have no idea, u should just check it with supplier. plenty in the market

(1)
can, however u need to get a design and build contractor to do everything for u including submission to local authority. alternatively u can get those runner who usually is competent engineer that know local authority well to draw the plan and all mandatory submission and then u may get a contractor separately to build.

(2)
I think that should be fine. is it safe? suddenly broken when kids climbing then all the blame will point on u

best to worse
indon
Myanmar
bangladeshi

not songlap but have to get those "competent" 1. u do on ur own they will just throw u to this and that dept and end up u will sure frustrated. some design and build contractor capable to do that as they already familiar v the procedure and how to get it done quickly.

no
too specific for me this 1.

(1)
0.25 because 1 portion of cement 3 portion of sand. mean 1 out of 4 is cement = 0.25.

(2)
3" concrete seems too think la. normally is 150mm at least. concrete cover is 25mm thick in general. but got exception in some case. generally is 25mm. is like this.
25mm concrete
1 layer of wire mesh
100mm concrete
1 layer of wire mesh
25mm concrete.

however, u not lay concrete layer by layer. after fix the wire mesh for all, u pour the concrete to cover all. use vibrator to ensure all the concrete sink into those void.

(3)notice of what?

(4)
yes, staircase is possible without shear wall. u need column to support the both end. the balance of space can use brickwall. shear wall is for high rise building usually.

(5)

half sunken underpass is build a road intersection to existing 1 by running underneath. overpass is build a cross over shoot the existing 1 by crossing overhead.

the sink hole location, that place will build a half sunken underpass.

construction is not about one man show kind of thing. u need various of profession to complete it. therefore construction industry is very complex. the hierarchy of construction industry is like this


Basically main contractor is the party where u will learn most of the thing as main contractor is the 1 who do the physical work for client.