Document kmXDy3YmM529OnryQNRr2rdRE

~ J* . , Johns-Manville Marinite is an insulating sheet mate rial composed of asbestos fiber, diatomaceous silica and an inorganic binder. Because it is both a struc tural and an insulating material, it offers major eco nomic advantages in the construction of ovens, driers and other process equipment requiring a housing for the retention and control of heat. Marinite is the only insulation available that can be erected without the metal sheathing necessary when mineral-fiber type similar insulating materials are employed. Marinite combines great structural strength with light weight and excellent thermal properties. It is fire proof and has j low thermal expansion coefficient. Marinite is completely non-corroding and will not disintegrate after prolonged immersion in water. Marinite is furnished in three densities: 23, 36, and 63 pounds per cubic foot. Marinite-36 is the best combination of structural strength, surface hardness (comparable to yellow pine) and insulating value and is recommended for most applications. Marinite23 offers the best thermal insulating characteristics. It is recommended where strength and hardness are of secondary importance, in areas not subject to di rect abuse or where the material serves as a core for veneering. Marinite-65 is recommended where struc tural strength and surface hardness are of primary importance. All three densities of Marinite are Supplied in two types. A and li. Tv pc A sheets, with a plain sanded -fnrrsfr on""both sides, are recommended for interior use where painting is not required. Type B sheets are also sanded on both sides, but in addition have an inorganic, factors-applied surface hardening and im pregnating treatment. They are recommended where a somewh.u harder and more dust free surface is de <*) sired and should always be used when subsequent painting or veneering is to be done. Developed to help prevent fires at sea VC'hen the American cruise ship Morro Castle caught fire and was beached on the New Jersey coast with a large loss of life in September, 1934, laws designed to prevent the recurrence of this appalling tragedy were speedily enacted. These laws required the con struction of firescreen bulkheads at specified inter vals along the length of all passenger vessels, as well as the enclosure of all staterooms, passageways, offi ces and similar areas, with incombustible material. This fire-proofing requirement for passenger ships built to sail under American registry led to the de velopment of Johns-Manville Marinite. - " Marinite successfully passes the rigid Coast Guard B-15 bulkhead requirement which specifies that bulk head panels shall be so constructed that, if subjected to the standard fire test reaching I400F in 15 minutes and 1550F in one-half hour, they shall be capable of preventing the passage of flame for one-half hour. In addition, the requirement specifies that the insu lation value of each panel must be such that the tem perature of the unexposed side will not rise more than 250F above the original temperature within 15 minutes. Sufficient proof of the excellence of Marinite is the fact that commencing with the construction of the 55 America. it has been installed on every American flag passenger vessel built since the early l<MO's-- as well as the majority of all American cargo ships built during the same period. For details see J-M brochure IN-20 > A. Johns-Manville Marinite Asbestos Joiner Panels. RS-10039 y . . Coaling tow*r,' 41 'feet high, built and imulated with Johns-Manville Marinite by Electro Technical Products, Nutley, New Jersey. savesmo ney aw ays ccsJs less o erect --Large, easy-to-handle sheets can be applied as quickly and easily as plywood. i l f" i1 ' las L. .| --Solid, uniformly textured material eliminates costly "hot spots" often caused by settling or sagging of ordinary insula- i Gif6r nSQt COnf.rOl tions. Staggered-joint construction with no through-metal keeps i " insulating effectiveness high. ,,, requires no maintenance --Inorganic and not affected by moisture, will not rust, rot or corrode... lasts indefinitely. MARINITE IS EASY TO ERECT Marinite can be readily worked without special tools or costly equipment. It can be cut or machined to any de sired shape, and will take screws and nails like lumber. The ease of cutting and drilling this versatile material permits observation holes, ports, etc., to be readily in corporated in the equipment during construction. Regardless of the size of the job, Marinite can be han dled and applied by your own construction staff with out special training. Because Marinite is strong and rigid, and comes in large sheets*, the angle-iron fram ing supports can be widely spaced and reduced in num ber. This speeds construction, keeps labor costs at a minimum, reduces the time required to put the equip ment into active service. Where desired, Marinite can be prefabricated to your own drawings at our factory, or by one of the many local Johns-Manville contractors. 'See table of Sizes and Thicknesses on page 15. MARINITE REDUCES HEAT LOSS In the usual type of oven or drier constructed of sheet metal and mineral-fiber type insula tion, there exists a large amount of throughmetal which tends to increase heat losses to the extent that the benefits resulting from the insulation are, to a large de gree, nullified. By "through-metal" is meant metal which extends from inner to outer door, wall or ceiling surface, and which provides an easy path for heat to escape. The use of Johns-Manville Marinite with broken-joint panel construction eliminates practically all through-metal and provides uniform temperature con trol throughout the equipment. More over, because it is an homogeneous material,Marinite never loses its insulating qualities through settling or sagging ... RS-10041 Thii small, goi-fired testing oven employs double-layer, staggered-joint Marinite construction. Because of Morinite's excel lent thermal properties the oven can be operated at 650F all day tong without becoming hot on the outside. - j* MARINITE REQUIRES NO MAINTENANCE prevents the occurrence of local-'-hot spots." The method of installing Marinite panels in a band type oven is clearly illustrated in the photograph below. In this picture (a detail close-up of the illustration on page 9) it will be noted that angle-iron framing is erected on the outside of the insulation to reduce the thermal expansion of the metal. Where the panels join, a staggered-joint, with no framing between, is used to insure a tight seal against the escape of heat. Panels are units built up of multi-layers of Marinite bolted to gether and fastened to the framing with a minimum number of key bolts. Where sheet metal panel construction with min eral-fiber type insulation is used for building ovens and driers, the inner faces of the metal walls, i.e., the faces in contact with the insulation--difficult or impossible to keep properly coated with pre servatives--are particularly susceptible to corro sion as a result of moisture condensation during cyclic shut-downs. This results in high mainte nance and replacement costs, and is the source of much trouble. Such a condition never occurs with Marinite because moisture will not cause Marinite to rot or corrode. Marinite requires no protective painting or coating under normal conditions, and it leaves no voids to collect water. The completely inorganic composition of Marinite renders it immune to decay and unattractive to vermin and rodents. It will not support the micro-organisms that cause mold growth. Marinite retains its attrac tive appearance without special care, requires only^. an occassional wiping or dusting with a clean cloth, and will last indefinitely. Bond type drying oven Si constructed of multi-loycr Morinite panels bolted together and secured to angle-iron framing. Staggered joints reduce through-metal to a minimum, keep insulating effec tiveness high. RS-10043 - Jt temperotures maintained in this modern Marinite bakery oven. PLASTICS -- Plostics manufacturer whose maintenance force built this Marinite drying oven reports: "No specialized skills or tools were needed." APPLIANCE -- Restaurants require modern equipment thot turns out prop erly cooked food every time. This Marinite restaurant oven does just that. How to use :X' -4.5&T* '.*5. V*'-` Recommendations on handling and fabricaHrig * The following procedure is recommended in order that work may progress smoothly and efficiently: .. .. - - Detailed sketches should be prepared by the carpenter, superintendent or 1 engineering department to permit cutting and drilling of the Marinite prior to fitting in place. This will minimize cutting and scaffolding (where it is necessary) at the point of erection. 2 3 Power-cutting equipment should be used on the job to effect maximum con struction savings. The use of untrimmed* Marinite sheets, furnished ap proximately 1" over-size in length and width but unsquared, will also effect savings. The extra material (approximately Vi" on both dimensions offer squaring) will reduce losses due to saw kerfs. Marinite sheets should be piled convenient to the cutting equipment. 4 Wherever possible, templets should be used for drilling, especially where duplicate pieces occur. (See illustration on page 11.) 5 Only bolting or screwing should be required at the actual point of appli cation or erection. Hand sawing and fitting should be reduced to a minimum. * Available on special order. HANDLING OF MARINITE Marinite is amply strong for the service intended, but the nature of its composition is such that it should be handled with a little more care than more common structural ma terials to avoid marring or breaking. For example, when removing sheets from piles: 1 Slide the top sheet at a slight angle to allow for a hand hold. Then lift at each corner (two men to a sheet are sufficient) taking care to prevent a corner from ripping across the face of the next undersheet. 2 3 Turn the sheet edgewise and carry in this position. This is not only more convenient, but will minimize whipping of the sheet and eliminate a source of possible fracture. Reverse these operations when laying a sheet on a truck, pile, or finishing table. 4 Avoid sliding the faces of Marinite sheets over one another whenever pos sible. Do not walk on sheets, and avoid dropping heavy objects on them to prevent marring of the finish. RS-100*5 Mechanics assembling a bakery oven with prefabricated Marinite panels. Note staggered joints and absence of through-metal as wed as minimum angle-iron framing. PILING OF SHEETS r Piles can be carried to any desired height without af fecting the material, provided the base is true and level. Otherwise the lower sheets will be deformed, the amount of deformation being dependent upon the height of the pile. For convenient unloading of the pile, however, its height should be limited to 5 feet. If sheets are piled on 4 x 4's, or similar bases, spacing should not exceed 24" on centers. Where possible, Marinite should be stored under cover, out of the weather. If necessary to store out doors, the sheets should be completely covered with water-proof tarpaulins and supported free from ground water to avoid possible discoloration. most successful. If some cutting is necessary at the point of application or erection, either a carpenter's While water has no effect on the chemical compo hand saw or a portable power saw can be used. Allow sition or strength of the material, it will make cut ting more difficult and add to the weight of the sheet. Also, Type B (surface treated) material must be thoroughly dry before priming and paint ing or peeling of the paint film may result. ances must be made for the saw kerf in all cases when figuring the number of pieces to be cut from a sheet. If sufficient quantities of Marinite are to be cut, an investment in proper equipment will pay for itself. Both circular and radial saws have been used success WORKING OF MARINITE General -- Marinite can be cut with an ordinary car fully. The circular saw is recommended because it more readily permits the collection of dust from cut ting by means of an exhaust located beneath the table. penter's hand saw, or power saws (equipped with Also, the cutting wheel can be fitted with a satisfactory wood-cutting steel blades) of the circular, radial, band guard and tends to carry the cutting refuse away from or jig type. However, since the composition of the ma the operator. Marinite should always be dry-cut; it terial tends to dull steel saws quickly, the use of carbide- should not be fed into the saw too rapidly or binding f ""tipped saws or abrasive wheels on floor or bench type and overheating, with consequent shortening of the power saws, or portable heavy-duty saws, has proved life of the wheel, will result. RS-10046 JcpritinuedXIvv POWER SAW CUTTING (Floor or bench type circular saw) for stationary power cutting A floor or bench type circular taw equipped with a carbide-tipped taw or abrative wheel located beneath the table it recommended. Such ma chine! will generally permit cutting at the rate of 300 to 500 linear feet of I" thick Marinite-36 per hour, including time to handle the material on and off the machine. The table should be equipped with an adjust able guide capable of being clamped rigidly in place for cutting differing widths. A wheel guard should also be provided. An auxiliary metal-faced table top (can be constructed of wood) placed at the far end of the power saw, and a roller table placed at its side will provide support and permit easy sliding of the 4' x $' sheets when cut ting. These tables should, of course, be level with the top of the saw table. 3 Some means for removing the dust from cutting operations should be provided. Many of the floor type circular saws are equipped with a spout within the base for connection to a dust-collecting system. PORTABLE POWER SAW CUTTING for small jobs Where small quantities of material are to be cut, a portable heavy-duty power saw, equipped with a car bide-tipped saw or an abrasive wheel, is recommended. It is suggested that with this type of equipment, a res pirator be worn by the operator, and that an air hose be attached to the frame to blow dust away from the operator. DRILLING AND BEVELLING ---------- - - -- Electric power drills equipped with steel-working drills render drilling of Marinite effortless, 3nd should be used whenever available Where extensive drilling is required, power drills should be considered a necessary investment which will save both time and labor. Bev elling and similar cutting can be done w ith wood-joiner tools, or with special width abrasive wheels SCREW SECUREMENT When using screws in Marinite, preliminary holes should always be drilled. Sheet metal screws are rec ommended in preference to wood screws. Where Type A sheet metal screws are used, the recommended drill sizes are as follows: To prevent stripping of the thread in the material, screws should not be turned after they have been screwed "home." A round-head. No. 10" x 7/a" Type A sheet metal screw correctly turned in a properly pre-drilled hole will withstand a pullout load of ap proximately 130 lb in Marinite-23, 240 lb in Marinite36 and 460 lb in Marinite-65. PAINTING MARINITE Marinite Type A, as generally used for the construc tion of ovens, driers, and other industrial equipment, is not intended for painting. If external painting is desired for appearance purposes, Marinite Type B (surface treated ) should be used. In general, the same finishing systems that are used for painting plaster or masonry surfaces are suitable for Marinite Type B. The following types of paints have been found satisfactory: Interior oleoresinous or synthetic resin paints, such as the alkyd type, consisting of wall primer-sealer followed by one or two coats of a flat, semi-gloss, or gloss paint. Latex paints or water-thinned emulsion paints of the polyvinyl acetate, styrene-butadiene rubber, or ac rylic types. These are self-priming and used as a two-coat finish. Rubber-base solvent type masonry paints made with chlorinated rubber or rubber resin applied directly as a two or three coat finish. The common aluminum paints may require prelimi nary application of a clear sealer coat. Alkyd-base aluminum paints of heavier body can generally be used directly. Paints of the above types are made by most of the major paint manufacturers who may be consulted for the desired finish. For certain conditions where considerable mois ture is present, such as in a moist-heat oven, the paint selected for the exterior should be a flat, breathing-type paint in any of the categories listed RS-10048 JOHNS-MANY! LLE IJSSI PRODUCTS TYPICAL 4* FOREWORD Constructing a dryer or oven out of Johns-Manville Marinite is essentially quite simple. However, to insure proper operating efficiency and long life, several design details should be kept in mind: Marinite will expand slightly when first heated to temperatures up to 250F. As tempera tures rise higher than 250F slight shrinkage occurs. In order to compensate for this movement bolt holes should be drilled at least V4" oversize as shown in drawings of sidewall and ceiling designs on page 13. Nuts should be hand-tightened only, and then backed off one-half turn. The following table gives the minimum total wall thicknesses of Marinite necessary to limit the effects of warpage resulting from expansion and shrinkage: largest panel dimension, feet 3 4 -6 8 10 100 to 200 1 1 1 1 1 201 to 300 1 1 1 1 2 Operating temperature--F 301 to 400 401 to 500 *501 to 600 *601 to 700 Minimum total wail thickness, inches 1 1 22 I 2 23 2 3 34 23 45 34 56 *701 to 800 3 3 4 6 7 *801 to 900 3 4 5 6 8 *At lntprofvrcs above 5Q0F, only mvttipti laywri of I" tUicknes* ihoutd be used Framing members for panel support should not be spaced on greater than 4' centers. To insure highest thermal effectiveness, staggered joint construction is recommended where 2 or more layers of Marinite are used in forming panels. In 1 -layer construction, joints should be covered with Marinite battens. The following drawings illustrate some of the recommended construction methods: > RS-10049 CONSTRUCTION DETAILS O CONSTRUCTION CONSTRUCTION Marinite sidewall and ceiling designs. 1-LAYER CONSTRUCTION 2-LAYER STAGGERED-JOINT CONSTRUCTION Marinite corner designs 3-LAYER STAGGERED-JOINT CONSTRUCTION RS-10050 TYPICAL CONSTRUCTION DETAILS continued ................................ i Marinite Sliding Door > SECTION A-A 2-layer Staggered Joint Construction ^u o SECTION A-A 3-Layer Staggered Joint Construction Ii I_ SECTION A-A SECTION A-A 2-layer Staggered 3-layer Staggered Joint Construction Joint Construction Marinite Observation Port RS-10051 o Marin ite-73 Mariflite-JC Marinitt-SS Density (Dry), f k/cii Moisture Content (Nsrnul). % *1 4rr veitht Transverse Strength (Ory), psi (Modulus of Rupture) After 24-hr soaking heat at indicated temperature Modulus et Elasticity (Ory). osi (From Transyerse Test) Consolidation (Normal), in./in. ( Load, psi 500 2000 4000 6000 8000 10000 12000 23 S 550 450 (900F) 0 20 x 10* 0 0? 0 45 0 62 0 65 0 68 0.71 0.74 36 5 900 900 (900F) 0.36 i 10* 0 02 0.1$ 0.38 0.S1 65 5 1500 1500 (800F) 0.65 x 10* 0 01 0.07 0.18 0 26 0.31 0.35 0.39 Compressive Strength (Normal), psi Charpy Impact Resistance (Normal), in. lb (ASTM 0256-54T. Method B-4" span. 5" * V?" * Yz~ unnofched samples) 14000 1.4 7000** 16 16000 3.4 Screw Holding Strength (Normal), lb-screw (WithWdrawPa.lenloqalrdatfioonr Type A, No- 6-12 Sheet-Metal Screws) Vs* penetration 35 80 180 130 240 460 Orinnell Hardness No. (Ory) (10 kg load, 10 mm bail, 10 sec) (SO kg load, 10 mm ball, 10 sec) 0,5 1.8 4.6 Dimensional Change Oue to Moisture, in. in. Shrinkage - Normal to dry expansion - Normal to 90% RK expansion - Ory to saturated 00.00000081 0.0010 0.0011 0.0001 . . . . 0.0013 00.00000017 0.0009 Thermal expansion, in./in./F (Avg over temperature range indicated. Detailed information for special cases furnished on request.) `2.3 i 10'-* (up to 200F; shrinkage thereafter) (U1P.3tox 10** 250F; shrinkage thereafter) 2.9 x 10-* (up to 250F; shrinkage thereafter) Maximum Service Temperature, F (For Continuous Service) 900" 900* 800* Fire Hazard Classification (listed under Underwriters* Laboratories, Inc Label Service Guide. No. 40 U8.13) Flame Spread 0. Smoke (Developed 0, and Fuel Contributed Negligible Thermal Conductivity, Btu in. sq ft/F/hr ( [1 Mean Temperature, F < I V 100 32A0O0 ^ 500 600 0.55 0 57 0.58 0.60 0.61 0.63 0.76 0.77 0.78 0.79 0.80 0.81 1.50 1.56 1.62 1.68 1.74 1.80 *S. pose 12 far labia of minimum total wall thickness*! neciory. NOTE: The figures given in the above table are average values (unless otherwise) v depending on panel dimentions and operating temperature, to limit specified) obtained in accordance with accepted test methods. Strength figures effects of warpage resulting from expansion and shrinkage. must be modified by applytne adequate factors of safety to arrive at working *For J layers of I" thick moferiof. One inch Ihicfcness alone shows no clearly defined failure up to 13,500 psi. values, M0ry" refers to oven-dried samples; "Normal," to normal conditions of 7SF and 50% R.H. Standard Sizes and Thicknesses Dimensional Tolerances (Inches) Material Thicknesses 3' r 8' Marinite-23 r 1 Vz~ r* V/ V Marinite-36 v2". v'\ w, r ivy\ *2" V w. w Marinite-65 v*", r 1 MT. 2" V V * Subject to 8 to 10 weeks delivery. Sheet Sizes 3W x 8' V' V' V V' V 4' x 8' >/ V V V V V V V 4' x 10' v V V v Marinite-23 Marinite-36 Marinite-65 Length & Width Thickness Squareness, maximum deviation per linear yd 1/32 1/32 1/16 I'16 1'32 1'16 1 16 1 32 1/16 HEAT TRANSMISSION BTU per square foot per hour Thickness, Inches Mannite-23 1 l1-? 2 3 4 5 6 Marinite-36 - - - 1 2 3 4 5 6 100 25 10 6 7 63 5 98 4 17 3 19 2 59 2 18 13 4 7 84 6 09 4 29 3 50 2 96 Marimte $S-furnished on request. | 200 | 300 Operating temperature-F | 400 | 500 | 600 | 700 | 800 Difference between operating temperature and ambient air temperature--F 1 125 1 225 1 325 | 425 i 525 j 625 j 725 539 99 2 146 195 .. __ ,, 38 9 71 2 105 139 -- -- 30 4 55 5 81 5 108 136 164 -- 21 1 38 6 56 6 75 0 94 0 114 133 16 2 29 8 43 4 57 5 72 0 86 8 102 13 7 24 0 35 2 46 6 58 3 70 4 82.6 11 1 20 2 29 6 39 2 | 49 0 59 2 69 5 68 2 125 184 246 ---- 39 4 72 2 105 139 174 209 -- 28 0 50 8 74 0 97 6 122 146 171 21 6 39 2 57 1 75 3 93 7 112 131 17 6 32 0 46 5 61 3 76 2 91 5 107 14 9 27 0 39 2 51 7 64 3 77.0 90 0 | 900 j 825 .... -~ -154 118 95 3 SO 1 x-- - 196 151 122 103 RS-10052 You'll also be interested in these additional J-M sheet materials developed for a variety of industrial uses 4* J-i-I YSA^ISiTl the original asbestos-cement sheet with the reputation to maintain For more than thirty years J-M Transite--in both flat and corrugated sheet form--has been widely specified for such industrial applications as coke quenchers, cooling towers, drying ovens, cable spacers, paper machine hoods, etc. Made of portland cement bonded with tough asbestos fibers, and formed under tremendous pressure into dense, monolithic sheets, Transite possesses a host of valu able properties. Write for brochure IN-184A. J-M ASBESTOCITE t- serving industry 101 ways indoors and out J-M Asbestocite is a strong, flexible industrial sheet material especially developed for use wher ever severe operating conditions call for outstand ing strength and permanence. Asbestocite is equally stable indoors or out. It is ideal for use as a protectise facing over insulation, as well as for fume hoods and ducts, cooling towers, etc. U"r/7e for brochure IN-17 S.d. Johns-Manville General Headquarters: 22 East 40th Street, New York 16, New York OFFICES IN ALL LARGE CITIES Canadian Johns-Manville Company, Ltd. Montreal - Ottawa * Toronto Winnipeg Vancouver Johns-Manville International Corporation New York - London Mexico City Buenos Aires Sao Paulo Havana * Lima