Building a 4,000 square foot house
Rinse out first in cold waterI am presuming you don't have a washing machineIf you do it's hardly worth while putting on for a pair of pants anyway Also unsure if you are UK or US as in UK pants are what you wear next to your skin and in US pants are trousersAfter rinsing use any suitable type of detergent, even a little washing up liquid if you have noneWash in the detergent and hot water, rinse off the detergent with hand hot water or cold water, wring out with your hands and hang to dryUnless these pants are white and the label advises you can do so DON'T use bleach.
First, I don't believe that you have an elevator in your houseSecond, you really need to learn how to spell and punctuateFinally, if you really don't have a laundry room, put your wet pants in the sink in your bathroom and fill it with water and then put bleach in itThen you can dry it.
Prestressed concrete means the beams and panels are poured in place elsewhere with the reinforcement tensioned during the pouringThus the cost depends on the size of the beams and how far they have to be transportedThis is normally only done with commercial buildings and bridgesIf you are going to do it in a house, the beams have to be professionally designed You would get an estimate from the maker Concrete poured in place on your property is normally done with rebar that is not tensionedAll the framing needs to be built to support the weight of the concrete if you are doing floors and ceilings Unless there is an overwhelming reason for a concrete reinforced beam roof (like parking on the roof or design), it would be very unlikely that even an all concrete house would have a heavy roof - steel beams or trusses and builtup roofing are much more likelyAnd less expensive.
