just to share...actually most contractor use formula to calculate the estimation of you renovation..else..how can they can give quotation between 2,3 days...if somebody want to know the formula..do PM me..

TQ..
after the selection of the steel iron, observe also for the sand type they use...the best sand for renovation is from 'mine/lombong'..usually the mine sand is white in color....the.....second is from river..or we call pasir sungai....normally river sand in yellowish or redish in color.....for pasir sungai or river sand..make sure that the river sand is 'wash' type...else....there is mud inside the sand..causing your concrete not strong enough....


for brick selection....if you got budget..use red brick 'tanah merah'....this brick is good and strong..it also..make your house cooler..compared to sand brick....for sand brick..the price..last time is about 0.23 sen ...else..the red brick is about 0.37 sen..price already gone up...for the red brick..the fully bake brick is good...how to recognized this brick?...there is some black color or line on the brick....