A. K. WILSON LUMBER CO.

Producen, Mrnufactureli rnd Wholesale Distributors of REDWOOD-DOUGLAS FIR

Wholesole Yard Mills of S. W. Corner Del Amo and Atqmedo Btvds. Portlond, Oregon Dominguez Junclion - Compton, Calif. sqmoo, Golif. phones NEwmark t-9651

NEvodo 6-2363

New Crop Douglas Fir Forms Striklng Scaffolding Structure

If the lumber in the scaffolding :rrouncl Freclerick & Nelson, great Seattle department store, was laid end to end, the pieces would extend approximately ten miles.

If the 4x4 posts-all stiff, straight, sturdy second-growth Dorrglas fir-rvhich comprise approximately one-third of the lur.nber used, were placed in a fence at twenty-foot intervals, that fence would surround six acres of ground.

The scaffolding is the first stage of a $6,000,000 addition oi three floors on the store, which is a Seattle branch of Marshall Field and Cornpany.

The particular type of scaffolding that is being used for the purpose of removing the store's old cornice ancl firewall and for general inspection and repair of tl-re existing terra-cotta worl< is known as Knife-Grip Scaffold, a locally manufactured and developed product in its entirety, having been first introduced to the construction industry by the Northwest Scafiold & Iiquipment Co., Inc., of Seattle.

This new-type scaffolding en-rbodics the practical feature of fabricating together Douglas fir lurnber that is grown, milled and marketed in the Northu'est, into a temporary structure that is held together entirely without the use of nails or bolts. This is accorrrplished by the use of a ntetal socket or sleeve which holcls the upright 4x4 posts and has four ltnife-edgecl steel castings welded to it, which receive an<l hol<1 the longituclinal members of the stmcture. The vital young fibers ancl tightlocked knots of second-growth fir are a preferred material for this type of scaffolding.

Angular bracing for proper rigidity in the scaffold is accor-nplished by the use of a three-foot metal brace which is secured in place much tl-re same as the ordinary common C clamp.

Some of the quantities that are contained in the scafiold that sttrrounds the building are 60,000 board feet of lumber, 25 tons of metal, making a total of 85 tons of scaffolding not counting the barricade or canopy that covers the sidewalk.

The barricade, designecl to cause the least possible inconvenience to customers and pedestrians, is decorated with large flower boxes filled with trees and florvers. The timber deck is 4"x4" construction of solid wood. It is clesigned so carefulh' and is so strong that it could withstand heavy automobile traffic over the top. Again, the second crop of the Douglas fir forest is called upon to provide lurnber for strength and security.

The strength ol Douglcs fir structural lumber is no plcce better illustrated thcn in this striking new wooden skelelon oI scdolding surrounding Secttle's gicnt Frederick d Nelson's slore on lour sides. Locked logether by cr pctented knile-grrip,2x4s cnd 4x4s provide cn cmczing verticcl bridge on which workmen lcbor six floorE qbove the busv srreet tevel, Trll'ffrril.'."_"J:li::"."* cdded to thig mer-

Lumber used in the barricade is enough to build ten fiveroom houses and the 110 gallons of paint used would paint approximately fifteen houses. Some 26,000 nails were used and 10,000 square feet of plywood.

The Northwest Scafiold & Equipment Co., of Seattle, erected the barricacle and scaffold under the direction of the general contractor, Henrik Valle & Co. of Seattle.

Iiach year about 800,000 people earn their living as employees of the American lumber industry. The furniture and fixtures industries employ another 300,000.