Construction workers on a construction site remodeling a house use this table table for maximum joist spans what is the appropriate span for 30 PSF using 2 x 8 board with a joist spacing of 16 inches

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years