Two 6-in wide wooden boards are to be joined by splice plates that will be fully glued on the contact surfaces. the glue to be used can safely provide a shear strength of 120 psi. determine the smallest allowable length l that can be used for the splice plates for an applied load of p = 15,000 lb. note that a gap of 0.5 in is required between boards 1 and 2.which one of these is the right answer and show work to prove why. a) 19.7 inb) 15.7 inc) 24.3 ind) 21.3 ine) 11.6 in