Two building columns (a wall column and an interior column) are to be supported on a common rectangular (combined) footing. The wall columin imposes a loading of 120 tons; the interier column carries 200 tons. The columns are $16 \mathrm{ft}$ apart. The end of the footing near the wall cannos project more than $3 \mathrm{ft}$ beyond the centerline of the wall columin. Using an allowable soil bearing pressure of 4,000 paf, give the length and width of foundation that shoeld be provided.