3rd Level Walls: Too Heavy, Too High

Added a 4' x 12'-hi wall. The challenge then was to get that 5" x 12" x 8' beam atop it.

I considered all the options, then just manhandled it up the 12' ladder alone. I'd placed the ladder at an unusually shallow angle, the better to fit in the framing; but on reaching the top, cradling the unbalanced monster member, i realized that the last essential heave (to place it atop the wall) would all-too-likely cause the ladder base to slide laterally on the sawdusty-slick plywood floor, releasing beam & i to freefall. Pure-luck-ily, i'd earlier tied a safety line from the central post, when i'd raised the wall, to prevent the wall from toppling over; now i looped that line around a precarious corner of the beam, teetered the other end to a brace, and retreated down to re-consider things, out of the fall-line. (i safety-blocked the ladder, cinched another line around the beam, scabbed a 2x4 shelf-block up high to give me some leverage, then remounted the ladder and gave the beam that last, successful, heave.)