Big / CORRUGATED ASBESTOS ROOFING ann SEEDING fml@laena Nel lh mao, SVB ING CORRUGATED ASBESTOS ROOFING AND SIDING Copyright 1928, Eternit, Inc. iE RIN el line woORKs—St. Louis, Mo. St. Louis Philadelphia Houston Jacksonville New Orleans SALES OFFICES IN Eternit Bzg-Seven Corrugated Asbestos Sheets on skeleton-framed buildings are weather- proof, fire-proof, permanent, free from maintenance COSTS GENERAL MANAGER WHAT DOES THE? Opveratine Ofrficiar DESIGNING ENGINEER demand of industrial roofing and siding? The General Manager The Operating Officzal The Constructzon Engeneer THE carrying charges on unnecessarily expensive buildings increase production costs to a far greater degree than is generally realized. Fixed costs and maintenance costs of buildings afford opportunities for savings often far in excess of any possible labor economies. The materials used for roofing and siding determine to a very large extent the type and the cost of any building, and consequently its effect on production costs. An overbuilt plant, either as regards capacity or type of con- struction is extremely hard to operate at a profit. Unnecessarily heavy brick or concrete buildings with high fixed charges may nullify the best effort of the operating departments, while the factor of obsoles- cence frequently wipes out the bulk of an industrial investment. On the other hand, too cheap a construction will not meet operat- ing necessities and will add the burden of excessive maintenance costs. The reasonable operating requirements are that a building shall ‘be weather-proof, fire-proof, free from condensation, resistant to winter cold and summer heat, and economical to maintain. Pleasing appearance, too, 1s an asset. But, above all, these qualities must be permanent and enduring. Materials that require frequent painting, corrode, or break under load or vibration are expensive handicaps to the operating department— expensive in lost time, ruined products and costs of replacements. Besides these qualities, the engineer demands ease of application, and excellence of engineering detail, and he must be shown that the ability of materials to meet plant requirements is based on very solid facts: That is why the inherent qualities of Eternit are receiving such general recognition in the soundly popular field of skeleton framed industrial construction. Page 3 The only two ingredients of Eternit Corrugated are Asbestos and Portland Cement Water-tight Permanent Strong Paces permanent fire-proof water-ti ght Eternit Big-Seven Corrugated Asbestos Sheets are absolutely water-tight, due to the cement content and method of manufacture. The permanence of a roofing material is determined by the basic qualities of 1ts components. Asbestos is the product of some millions of years of heat-treat- ment, at temperatures and pressures beside which the fumes and stresses of industrial service are a small thing. Platinum, perhaps, but certainly no common metal approximates the enduring qualities of asbestos. And no engineer need be told about the enduring qualities of Portland cement. Excellent concrete has been found in the oldest aqueducts of Rome. The strength of Eternit Big Seven Sheets, more than adequate for good construction when first made, increases with the slow ageing of the cement rather than diminishing under the forces of corrosion. Fzre-proof Insulation No Condensation No Damage From Punched Holes Wide Range of Ap plication 100% Salvage Value Made entirely of Portland cement and asbestos, both absolutely impervious to fire, Eternit Sheets are fire-proof to an absolute degree. The low thermal conductivity of Eternit Sheets keeps the build- ings they cover remarkably cool and comfortable under a blazing sun; protecting perishable materials that might be spoiled by high tem- perature and contributing to greater efficiency of labor in the summer time. Because of the nature of this material, and its high resistance to heat transfer, condensation does not form on the under side of roofs. Eternit Sheets are securely fastened to purlins and girts without the necessity of punching holes through the sheets. The special Eternit fastener takes care of this, and the elimination of holes through the material unquestionably makes a more efficient covering. Holes through any material are weak points. Eternit Corrugated Asbestos Roofing and Siding is suitable for covering all sizes and types of steel and wood skeleton framed in- dustrial buildings—the only building type that meets all of the re- quirements of low cost, quick construction, and ease of application. Eternit Sheets are easily sawn into new shapes and thus may readily be removed and re-applied in new construction. Because of this flexibility and because punched holes are un- necessary, Eternit Sheets after years of service are re-usable at exactly their full value as building materials. Page 5 Big Seven’s sceentafic design greatly increases STRENGTH without increasing weight Why Corrugated ? The Big Seven Corrugation Light-Weight Big Seven Sheets Support Over 250 Lbs. per Square Foot on a 45” Span Page 6 The corrugated section is the ideal structural form for industrial roofing and siding. Corrugating a flat sheet greatly increases its strength and rigidity, thus making it adaptable to application over widely spaced supports. The interlocking corrugations form efficient, water-tight laps and the many gutters formed by the corrugated troughs give a ‘‘scouring velocity’’ to rain discharge that washes the roof clean of dirt. Eternit Big Seven corrugations are nearly three times as wide and twice as deep as ordinarily used 1n competitive materials. Thus, without increasing the weight of the material, its strength and rigidity are increased many times, for as is well known among en- gineers, the strength of a beam section increases as the square of its depth, while its ‘‘stiffness’’ increases as the depth cubed. Because their scientific design gives Eternit corrugated asbestos sheets remarkable strength, it is possible to make them exceptionally light in weight, thus permitting economy in designing the support- ing structure. Eternit costs IL JOSS TEI YEA. oh AONE VARS: GOS ey dave Oinlhir CONE ae The Least Expensive Non-Corrodzble Covering No Mazntenance— By Far the Cheapest Covering Per Year Eternit Big Seven Sheets are cheaper than any other material of even approximately comparable qualities. As compared to other types of permanent coverings, or as compared to many semi-permanent types, Eternit simply offers much more value, actually for less money. As compared to corrugated galvanized iron, the cheapest covering ordinarily used, Eternit usually costs from one-third to one-half more per square, unless the job is affected by some unusual conditions. This refers to Colonial Gray color, and assumes a reasonably complete job of painting the corrugated iron. Only under the most favorable conditions may this painting— both inside and out—be omitted. One extra painting that you pay for but cannot keep, makes a thin steel covering cost more than Eternit. To paint corrugated iron coverings efficiently, each sheet must be painted on both sides before erection, otherwise, no paint will protect the sheets where they lap—a most vulnerable point for rust attack, and a point which is obviously impossible to protect by re-painting. Four dollars a square is a moderate price for inside and out re- painting. If a lot of damaged paint and rust must be removed, this cost will be doubled. It is easy to see how two or three extra paintings affect costs on a large building. And when you add to these paintings a complete replacement of cheap coverings, as you must in ten years of even reasonably severe service, then their use becomes economically absurd. Page Appearance is an zmportant factor Big Seven Sheets are just as suitable for siding material as for the roof. This illustration gives an idea of the clean-cut effect of a Big Seven industrial building cov- ered on both roof and Sides. Page 8 SSeS The sheets are applied directly to the purlins as shown in the above illustra- tion. No decking is necessary. Right—Note how this Big Seven roof reflects light. It was selected for this building because a maximum of lighting efficzency was required in the interior of the building. Big Seven can be used to meet various climatic conditions. There zs no condensation. The rugged Spanish tile effect of Big Seven makes industrial buildings more attractive This large roof illustrates the Spanish Tile effect of Big Seven Corrugated As- bestos Sheets. Note the absence of the protruding bolts and fasteners. Side laps are not noticeable. In the illustration at the left, Big Seven Sheets are applied on a comparatively small roof area. No roof area is too small for Big Seven. Right—Two types of corrugated asbestos are pictured — Big Seven and the small corruga- tion sheet. Notice the pleasing Spanish Tile appearance of the Big Seven Sheets at the left. The side laps are not noticeable. The corru- gated asbestos with a small corrugation may be seen on the roof area in the extreme right of the picture. Big Seven is adaptable for use on buildings where traveling cranes are in- stalled. Big Sex ate applied low Here is the workman about to lay the sheet over the fasteners. There are no holes to drill. It 1s not a questi sheets alone. Them portant thing. The a factor that must | Unskilled labor Sheets. The special eners eliminate the special fitting. Scat ry. The fasteners at and the sheets ate The sheet is slipped into head lap is determ: place just as easily as lowering the hood on an automobile. Application cost prisingly low. Left—Bi, Sheets ¢ ST fitted aro1 . em — SG oplening s | ee AEN windo R Scaffoldiny ts not necessary. re To insure absolute safety, s the workmen should use ¢ either planks or chicken- n ladders. fi Page 10 n Sheets ipidly and at COST Oietne price,or thie lied cost is the im- st of application is carefully considered. in apply Big Seven ternit patented fast- rilling of holes and ding is not necessa- olted to the purlins sped into place. The d by the fastener. n Big Seven are sur- — Corner not neces- 5 the large gation a tight r roll at > corner. It is possible to apply any number of panels at the same time. Big Seven Sheets are self- aligning. Unskilled labor can be used in the appli- cation. The special Eternit fast- eners insure that the proper head lap will be secured automatically. The side lap on Big Seven Sheets is one-half corruga- tion, or 3%", which is guaranteed to be absolutely weather-proof and water- tight. It is impossible for the workmen to make a mis- take in lapping the sheets. Facer n 214” for 4” Thick Sheet 238" for '/,” Thick Sheet SPECIFICATIONS Standard Sheets: 383” wide; thicknesses: 4” (weight 1s 4 lbs. per square foot) and 7” (weight 3 lbs. per square foot). Corrugation: 7” center to center; height 2%” and 2%”. Lengths: 3’, 36”, 4’, 4’6”, 5’, 6, 7’, 8’, , 10’. Other special lengths can be furnished. Colors—Colonial Gray and Indian Red. Purlin spacing depends essentially upon factor of safety desired. For ease of application and to eliminate necessity of holes in sheet, purlin spacing of 48” center to center, with sheets 54” long, is advisable for +” thick material. For a wider spacing, 3” thickness 1s recommended. 3814” Weather Exposure—35” Lap 3%" or % Corr : 2 2 : 2M for 4" 238 for 3/5” Thick Sheet | DIMENSIONS (O°-E- ClO°RERSUCG VAST ESDES Heletaias Monztor Main Roof and Siding BGiBgieeBgeg Types of Sheets Used on Roof Shown Above TYPICAL LA Y°OCVU ET) OFF | GORPR UsG7A IER D ee Sere eee Steel Washer’ Hook for — yy ~~ Lead Washer Steel Purlins aay Detail of Fastener with Clip No. 2 pee ote re NeE Reo ee beOeRe wesel, EEL, (GsH AN: N°EE «PUR EPNS See Above for Ridge FASTENERS FOR MISC EL DA Noe OcU- See URS ENS ‘an 4 -Angle Girts Lead Flashing = Channel Girts Wood Girts Fasteners for Bottom Sheets Pom ebeNeh Reser OTR C1O RE ReUG AT ED. S I DAN G Baus seiiee Purlin DIR VAM EO Sa g Y Z Gable Flashing Flat Type Eave Filler Sections 49” Long Vx, Bolt One Led 7” Lap at Ends One Steel Washer “T° Bolt—One Lead About 8" High One Steel Washer a About 11” Wide Eternit Apron Flashing MISCELLANEOUS ETERNIG FURASH UNG Dit ae | Ss Cap Flashing Lead Base Flashing Fastener Form Flashing Into Corrugations Section Through Stack Standard Fastener Channel Girt Detail of Window Bx Anglen| Welded Welded a GP? Ie —One Steel Washer ig Js xX ge Angle 3” Clearance Eel SERN le beh AS Hal NeG 9D E-TAcle LS Corrugated asbestos is the ideal covering for roof and sidewalls of airplane hangars—fireproof, permanent, economical.