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WHOTESALE'NANUFACTURERS golf, bridge or Canasta and luncheon at the country club May 17, and the ladies annual luncheon at the Flagstaff Country Club on May 18. They also participated in the Southwest barbecue and 'ivere cordially invitied to sit in on any and all of the business sessions at the armory this year.

The resolutions brought out at the convention included those on fire insurance rates, establishment of a degree of B.S. or B.A.-light construction, itinerant truckers, Glen Canyon dam, 3/o tax on transportation (which it urged. to be discontinued), housing legislation, extension of the Davis-Bacon act (which it opposed as proposed), and retention of the retail exemption in the rvage-hour larv.

Hoo-Hoo-Ettes Heqr lrqniqn

Los Angeles Hoo-Hoo-Ette Club No. 1 met at Rodger Young auditorium May 14 for their monthly meeting, with dinner being served at 6:39 p.m. Guest speaker for the evening was Dr. Amiri, a native of Iran norv studying larv at USC.

Elsie Stirling gave an interesting revier,v of the accomplishments of the Educational Seminar which was concluded the second rveek in N{ay. She stated that the following Hoo-Hoo-E,ttes deserved much credit for their time and effort devoted to the Seminar, lvhich was a success in every way: Agnes McIntyre, Evelyn Fryrear, Mildred Abbott, Ann Murray, Ilessie Stervart and Geraldine Howe.

Here's q new 'besl sellert for your conlroclor cuslomers

Plywood lndustry Announces New One-piece Combi notion 5u bflooring-Underlcryment

You can make money rvith a single thickness of fir plyrvood serving trvo rlses-structural subfloor and underlayment. So says Douglas Fir Plyrvood Association, which has just announced a ne\\r structural panel called 2.4.1., engineered to function as a solid one-piece base over supports on 48-inch centers for everything from thin vinyl tile to oak strip flooring.

The announcement follou.s t\\'o years of development involving intensive engineering research and field experience rvith builders. One contractor using a framing scheme specifically designed to utilize all the advantages of this method estimates that his total savings top $500 a unit.

Not all btrilders will be able to realize similar economies, but the idea offers solid advantages in terms of time, cost and quality of floor. Among them:

Crews hendle ferver pieces and framing goes in faster.

You get a stifier floolrvith a substantial feeling under heavy traffic depending upon framing used.

When girders are framed into the foundations, you can decrease the height of the rvalls a foot or more with all the contingent savings in time and materials this implies.

Since the \\'a11s can be carried directly on the foundations, you eliminate all troubles that stem from shrinking joists in conventional construction. T.hese include costly and troublesome call-backs resulting from sticking doors and rvindows and cracks in plastered walls.

Panels can be tacked into place and subsequently picked up by electrical and plumbing subs to get at the rvork. This clininates delays, and one plumbing sub-contractor figures he saves about 2l days on jobs where this Result-lower bids. possibie

With a crawl space it is adaptable to plenum heating since register holes require no edge framing. Also, because of the warm air space, insulation is not needed on heating ducts.

In homes with basements, you get an attractive, cleanbeamed ceiling.

Here are the specifications for the new panel. It is unsanded |-l/B-inch seven-ply panel manufactured under the association's quality supervision program, rvith Interior type mold-resistant glue line conforming to the U. S. Comme:cial Standard. The face is made up of C-repaired veneer. This means it has no open defects larger than r/a-rnch by l-inch.

Douglas Fir Plyu'ood Association recommends an adaptation of the framing scheme worked out by the man who originally conceived the idea, Kenneth Larsen, president of Continental l{omes, Inc., Seattle, Wash.

Under this scheme, 4x4 posts are placed inside the footings on four-foot centers one way and on eight-foot centers the other. These support 4x6 girders on 4-foot centers with. 2x4 blocking under panel edges on the same spacing. Main fECO Trip-l-Grip ioisl honger fot 2x4 blocking under ponel edges in 2.4.1 subfloor underloyment shown dt left (lefr phoro); blocking con be toe-noiled but solid support like fhis mqkes for better con3lluciion. In the pholo ot the righf, four types of finish f,oor hqve been opplied directy to o one-piece 2.4.1 ba:e: woll.to-woll cdrpeting, %-inch ook, linoleum ond resilient flooring tile. girders can be tied to concrete or masonry foundations several ways. Depending upon local FHA requirements, the girders can be set into pockets in the foundations flush with the top of the sill or supported on posts adjacent to the foundation.

THE NEW STRUCIURAL PANE[ se]ving iwo uses in one thickness, colled 2,4.1, is onnounced by the Douglas Fir Plywood Associqtion. The ponel, shown qt left in pholos ocross fop of this poge, servcs qs solid one-piece bcsc over supports on 48-inch centers for oll kinds of 0ooring from thin vinyl tile to ook sirip. 2.4.1 rcquires fewer pieces for f,oor froming; in top cenler scene moin girders rest on posts inside foundotions. In top right photo. moin girders ore 4x6 set on posts with 2x4 blocking ot ponel edges.

PHOTOS AT BOTIOM OF OPPOSIIE PAGE show (left) how cny kind of finish flooring con be loid directly on 2,4.1 6r plywood. Center photo shows box sill con3lruclion of Billings, Monr., builder Glenn Thorpe using ideo of rhick ponels on 48-inch centers for basemenl houses. In focomc iob ot for righr, blocking is rupported wirh lumbar strips olong lower side of f,oor girders.

NEW 2,4.1 combinqtion subf,oor underloymenl ponel goes down on floor frcming fost (rop lefi, obove), provides righr, solid one-piece bose for ony kind of ftnish f,ooring. Ponel con be tacked into ploce lemporqrily lo provide solid working plotform (center); then pcnels csn be removed by subs to provide plenty of working spcce, New onepieca plywood subf,oor-underloy. ment is ideol bose for wall.to-wqll corpeting (rop righl).

Some builders hove lowered height of wolls wirh 2.4.1 ponel by sct ting girders into pockefs in foundqlions so top of girder is f,ush with plote (lefi in photos or righr). In homes with bosements (fqr right), use oi 2.4.1 over supporl3 on 48jnch cenfers provides c clecn oppoqronce in bosemenl ceilings.

The 2.4.1. fir plywood panels should be nailed with face grain running across the main girders so the edges are supported by the 2x4's. The panels can be brought out flush with the outside edge of the sill so the plate is nailed over the plyrvood or the plate can be placed directly.on the sill. The association recommends that the plywood be nailed with ring shank or helically threaded nails spaced six inches on all bearings.

If the foundation is planned to a module of four feet as done by truilder Larsen, only starter panels need one straight cut across the center.

Th.e idea has been used by builders and architects in Seattle, Tacoma, San Francisco, Southern California and Billings, Montana. Several FHA regional offices have accepted it. Most questions on acceptance are the result of the framin,g rather than the plywood, and builders seeking acceptance from building offices or FHA should detail their framing system carefully.

Larsen has built about a dozen homes in the $12,000 to $20,000 class using th,is system. He feels that it gives him, in addition to the dollar savings he realizes, a very stiff high quality floor construction.

Glenn Thorpe in Billings, who has used the system on about 40 homes, estimates his dollar savings at about $300 a house. In Southern California, George Stacey, a general contractor wh,o builds about 2O homes a year, estimates his savings in terms of six cents a sq. ft.

"Even so," he says, "the biggest value we see in the system is the elimination of shrinking that normally occurs in conventional joist construction. This has cut our complaints and call-backs resulting from sticky doors and windorvs to just about nothing. We'd recommend the idea to eny builder."

Architects, too, are highly pleased with the results they've had in their first attempts to use the method in custom-designed homes. James W. Bickford, AIA, Seattle. specifies it in every design he has.

During the development stage on the product, one of the primary problems was lack of supply. Seventeen west coast mills are now planning volume production. Builders should ask their usual sources of supply for price quotations.

The association does not have product literature available at this point. Ifowever, a specification sheet showing recommended details and nailing schedules is available to the trade. Association field men stand ready to be of help in gaining acceptance by regional FHA offices and local building inspectors. For specifications and engineering data, if desired, 'ivrite Douglas Fir Plywood Association, Tacoma 2, Wash,ington.