The costs of supplying, erecting, dismantling, and moving scaffolds on a high-rise project can be significant. When job conditions are right, masonry contractors can reduce these costs by working from the floors instead of scaffolding the entire project. WORKING OVERHAND Laying brick overhand (i.e., working from the inside and reaching past the backup wythe) takes more time to do well than laying brick while facing the wall. The mason must reach farther to place each brick and take extra care to assure an acceptable appearance, because he can't see the outside face of the wall as he's building it. DEDICATED HOIST A hoist was installed to carry materials from the ground to each floor. Pallets of brick and block were stored around the perimeter of the floors and the masons built the backup and exterior wythes simultaneously. Ladder-type joint reinforcement was used in bed joints to tie the inner and outer wythes together at every other block course. SCAFFOLDS STILL ARE NEEDED Working from the floors doesn't entirely eliminate the need for scaffolding on a job. Masons still need at least one tier of tubular-frame scaffolding on each floor to build the upper half of the wall.