Post by ccs06 on Nov 12, 2008 at 7:47am. Any advice for cleaning ceramic tile with textured grooves in it? The tile also has little pit holes in it to that the dirt just gets in and sticks as well as along the grove lines. This is in a high traffic area so it is dirty nightly. I started cleaning with a scrub brush and then moved to a handled angled brush to get in the crevices better, but it takes forever and it never looks absolutely clean.
In an oven heated to 275 degrees you cook a roast for 28 minutes per pound. Therefore the estimated cooking time for a 4.8 pound roast is 134 minutes or 2.23 hours.
1 Reduce the oven temperature to 275 degrees F and continue cooking covered for another 2 hours. 2  Remove from oven and turn the roast over, place back in oven for another 1-2 hours or until roast is tender (could take longer than 2 hours, as you are cooking at a low temperature). Reduce the oven temperature to 275 degrees F and continue cooking covered for another 2 hours. 2  Remove from oven and turn the roast over, place back in oven for another 1-2 hours or until roast is tender (could take longer than 2 hours, as you are cooking at a low temperature).