NEWLITERATURE

Get On Schedule

The Expand-A-Plan Modular Scheduling Systems Catalog is free from Methods Research Corp., Asbury Ave., Farmingdale, N.J. O7727.

Milling About

The Where To Buy guide, listing 17 Western red cedar manufacturers is free from the Western Red Cedar Lumber Association, Dept. A{, Yeon Bldg., Portland, Or.97?n4.

Bridge The Gap Study Plan Book of Bridges and Cupolas with illustrations and designs is $8.50, including postage, from Sun Designs , P.O. Box Zb, Delafield , wi. 53018.

Topping Topic

A polyester roofing membrane booklet is free from Consolidated Protective Coatings Corp., Marketing Div. I, l80l E. Ninth St., Cleveland, Oh.,f4l14.

Guiding Light

A brochure of guidelights for use on floors, steps and handrails is free from Tivoli Industries, l5l3 E. St. Certrude Pl., Santa Ana, Ca. Y2705.

Closed Door Policy

For a free brochure on energy saving entry systems write the Columbia Door Div., Simpson Timber Co., P.O. Box 1336, Vancouver, Wa. 98665.

Revolutionary ldeas

Decorative ideas for wood mouldings in American Colonial style are 500 from Wood Moulding and Millwork Producers, Dept. AC, P.O. Box 25278, Portland, Or.97225.

Sound Off

Copies of Sound Reduction: Design Considerotions for Construction Glass are available for lOc each from the Mer- chandising Dept., LOF Glass Co.,P.O. Box 799, Toledo, Oh. 43695.

Weather The Storm

The Weotherstripping Products Catalog is free from Mortell Co., 550 N. Hobbie Ave., Kankakee, Il. 60901

For Prompt Service

on all New Literature stories write directly to the name and address shown in each item. Please mention that you saw it in Building Producb Digest, Many thanks!

Door Decor

A brochure on decorative screen doors is free from Unique Technology, 2{8 James St., Venice, Fl. 33595.

Panel Handling

A brochure showing application ideas for paneling is free from Ostermann & Scheiwe U.S.A., P.O. Box 668, Spanaway, Wa.9E387.

Floorlng Facts

Uscs of color, pattern and tqture in resilient flooring are explained in a free lGp. brochure f1e6 llfennington Mills, Inc., P.O. Box !X), Salem, N.J.(B079.

A Book For The Roolless

GAF Corp. has updated literature on its asphalt roofing shingles, free from Building Materials Div., 140 W. 5l St., New York, N.Y. 10020.

A Proper Installation

A 32-p. guide on the installation of aluminum replacement and storm windows is free from the Aluminum Action Center , 438 W. 37th St., New York, N.Y. 10018.

Pining Away?

A brochure on hcart pine wood products is free from Legacy Pine Limited, Inc. , P.O. bx 5X14, Atlanta, Ga. 30355.

Hitch A Lift

Practicd information on critical lift truck components is in a fr,oe booklct from Eaton Corp., Industrid Truck Div., I l0O0 Roosevelt Blvd., Philadelphia, Pa. l9l 15.

Breaking The Code?

Code Contorming Wood Daign, a guide to building codes, is $15 from the American Wood Council, 1619 Massachusetts Ave. , NW, Washington , D.C. 2[p36.

Weatherstripplng Gatalog

A catalog d€scribing thresholds and weathcrstripping items and a mcrchandising brochure of p.o.p. display units are free from Pemko, P.O. Box 37fl), Ventura, Ca.93m6.

Laminate Literature

A brochure on Re,posal decorative laminates is free from The Diller Corp., 5210 Madison Ct. , Morton Grovc, n. 6m53.

Gel Wired Right

A lGp.wiring guide for thed-i-yer is available to retailers from the Wiring Device Dept. of General Electric Co., Warwick, R.I.02886.

Purchasing Guide

The Thomas Regional Directory, a I,fiD page industrial purchasing guide, is free from the Circulation Dept., 330 W. 34th, I,lew York, N.Y. tflDl.

Chlmney Gatalog

A catalog of all-fuel, triple wall chimney systcms is free from Air-Jet ltc' ducts, General Products Co.,P.O. Bor T38T,Fredericksburg, Y a. 22M,

Balsa At The Core Of Fiberglass Boats

(Continued from page l4)

3/16 in. to 2 in. thick are glued to a loosely woven fiberglass scrim.

Not only does this 24- by 48-in. drapable balsa blanket conform to the compound curves frequently found in boat hulls. but also because the grain is perpendicular to the plane of the core in a laminate, it means that any moisture accidentally reaching the core layer because of trauma to the hull will not migrate throughout the core to weaken the overall laminate structure.

Balsa, which is actually classified as a hardwood although soft to the touch and easily workable, has a number of unique characteristics that make it ideal as acorein the composite construction of plastic boats. In its end-grain form, it has great compressive, flexural, and shear strengths which substantially increase the stiffness, rigidity, and impact resistance of fiberglass hulls and decks while decreasing overall weight of the laminate and the entire boat.

Balsa also provides excellent thermal and acoustical insulation properties to the laminate and contributes about 55 lbs. of positive flotation to the boat for every cubic foot of balsa used.

Thanks to balsa and its properties, wood has not disappeared from boatbuilding, as some may have surmised. It is simply not as evident at first glance because it lies at the very core of so many of today's fiberglass boats.

0URAELE blanket ol drapable balsa is applied inside the hull mold of a boat between the outer and inner layers of fiberglass. During World War ll balsa was used in the Mosquito British attack bomber, the U.S. Navy PBY Catalina patr0l bomber, lifejackets and life rafts.

CONTINUOUS. infinite l-beam structure is formed when an end-grain balsa core with the grain running perpendicular to the f langes is sandwiched between two fiberglass skins, ouler and inner. Approved worldwide by marilime societies. the material has a compressive strength of about 1,200 psi.

This article was excerptedfrom moteriol which oppeored in the Forest Products Journol, July, 1981.-ed.