2 minute read
And Some Cool Protils
YOU HAVE HEARD qbout'the cool wqler from the wooden buckel." lt's lrue. Wood keeps woter cooler in summer ond helps prevent freezing in winter. Redwood tqnks lqsl longer.
So when you sell Redwood tonks, you moke q nice proftt ond sotisfy your cuslomer. Write now for price lisl ond lileroture.
"ouR, 71th YEAR" eight years ago, recently confirmed by laboratory studies both in the U.S. and abroad, helped prevent the loss of a major redwood market to a competitive material. The market was the cooling tower industry, which uses millions of board feet of California redwood for the construction of cooling towers for the petroleum, petro-chemical and power industries. In 1950, because of the premature failure of some redwood cooling towers, the redwood lumber industry was threatened with the loss of this important business to the treated-wood industry.
An intensive field study, begun at that time by the California Redwood Association and the Cooling Tower Institute, revealed a hitherto unexplained surface deterioration of the wood in the flooded portions of certain towers. The Technical division staff of the CRA "guessed" that chlorine, which many operators add to tower circulating water to control the growth of algae, reduced the usually high decay resistance of redwood heartwood.
Operating practices on this "educated guess" have materially lengthened the service life of untreated redwood cooling towers, enabling redwood to retain a major share of the cooling tower market despite increased competition from preservative-treated wood.
Confirmation of the CRA position has come in recent months from the U. S. Forest Products Laboratory at I\fadison, Wisconsin, and the Forest Products Research Laboratory in Great Britain, at which independent studies showed that treatment with chlorine water makes coniferous woods susceptible to the soft rots which have caused so much damage to cooling towers. The CRA study was initiated by Byrne C. Manson, former Technical division manager for the CRA, and was carried on by Willard E. Pratt, Jack Behrens and William A. Dost of CRA's Technical division.
New \lV.l.C. Plywood Brochure
The Woodwork Institute of California has prepared a new brochure designed to assist the architect in the correct use of terms and phrases generally used in specifying architectural plywood. It gives a brief description of each term and graphically illustrates the method used to produce a specific type of veneer and the effect that each method has on the veneer to produce specific characteristics.
In the use of architectural plywood, the employment of these characteristics to produce a desired atmosphere in modern and contemporary design is important.
It is recommended that before designing and specifying architectural grade plywood, contact be made with either a W.I.C. member or the nearest office to determine availability and suitability of the various types of veneers and matches for the particular species of wood, reports O. E. Long, Architectural Services director.
Retoilers Srill Goining Over'58
The Department of Commerce reports that retail sales for September were 8/o higher than a year ago and, after allowing for seasonal factors and trading-day differences, were down 2/o lrom August. Inventories at the end of September were higher than 1958 but unchanged from August of this year.
