Under every house is a foundation, and under most foundations are footings. Most of the time we take footings for granted, and usually we can: For typical soils, a common 16- or 20-inch-wide footing can more than handle the relatively light weight of an ordinary house.
According to HomeDrugTestingKit, amphetamines are detectable in urine for up to 4 days. This is an average as everyone metabolizes medication at different rates. According to the prescribing packet insert for Adderall, it has a half-life of 12 hours for staying in your system. For more information about how it affects your bloodstream I suggest you refer to the packet insert with the medication, or ask your doctor.
But if you're asking this for drug testing purposes, you should know that Adderall WILL show up in a hair follicle drug test for up to 90m days after you take it. It should be undetectable in a urine test after 72 hours. But again, that depends on your metabolic rate and how well your liver is working.