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American Society of Heating and Ventilating Engineers Guide, 1934 Table 4. Conductivities (k) and Conductances (C) of Building Materials and Insulations Tests Conducted at Armour Institute of Technology, by J. C. Peebles.P Insulation Tests Based on Samples Submitted by Manufacturers Material Description Density (Lb. peb Cu. Ft.) Mean Temp. (Deo. Fahb.) ConDuotivitT (i) Conduc tance (C, AerocreteAerocrete-- Aerocrete-- Aerocrete-- ArboriteAsbestos shingles___ Asphalt shingles____ Balsam Wool4__ Beaver Insulating Board__.. Calicel. Cellular concrete_ Cellular concrete--. Cellular concrete-- Cellular concrete______________ ______ Rigid insulation made from wood pulp Chemically treated wood fibre between plain paper__ _ Cane fibre commercial thickness H in. Granular fill insulation made from 40.0 50.0 60.0 70.0 15.2 65.0 70.0 3.62 13.8 75 75 75 75 75 75 70 75 1.06 1.44 1.80 2.18 0.33 6.00* 6.50* 0.25 0.33 Celotex____ Cincrete Block. 8 imHoUow Concrete. Concrete_______________ Donnacona Board................ Dry Zero Blanket*_________ combined silicate of lime and alumina________ Rigid insulation made from sugarcane fibre......... ...................................___ Treated cinder aggregate concrete... StoneCinder........................ ............................... Rigid insulation made from wood fiber Pliable slab form of insulation made 4.2 _13.5 ...._ 145.0 110.0 15.9 72 70 .. 75 75 72 0.24 0.33 0.33* 6.30 5.20 0.33 Dry Zero Blanket*_____ from ceiba fibres.. Pliable slab form of insulation made 1.9 75 0.23 Dry Zero Blanket*_____ from ceiba fibres-......... -........... ........ Pliable slab form of insulation made 1.6 75 0.24 Flax-li-num*_____ `_____ Glass Wool.................... from ceiba fibres. Flax fibre--. Fibrous material 25 to 30 microns in 1.5 12.1 75 70 0.24 0.30 Glass Wool................ Haydite--Concrete- Homasote- diameter made from virgin bottle glass............................................ Ditto. 2 to 3 microns in diameter. Heat-treated clay aggregate standard blocks 8x8x16 in. Made from wood and other vegetable 1.5 0.85 73.0 75 75 __ 0.27-- 0.25 1.62 Inso Board....... ..... Insulating Plaster-- fibres chemically treated..... Rigid insulation made from wheat straw] 25.0 17.0 75 68 0.375 0.33 Insulating plaster. 9/10 in. thick, ap Insulite.. Keystone Hair*____ Lith plied to H in- plaster board base....... Rigid insulation made from wood pulp.. 54.0 16.5 75 70 1.07* 0.34* Hair felt between layers of paper; yi in. thick.--.................................... . Rock wool, flax and straw pulp with 11.0 75 0.25 LinoboartL. Maftex.___ binder..............-.............. --................. Slab form of insulation made from rock wool and vegetable fibres| Rigid insulation made from licorice 14.5 9.9 11.5 75 72 72 0.38 0.296 0.311 Maizewood_ Maple Flooring___ Masonite_________ roots................--.....................-......... . Rigid insulation made from cornstalks Across grain..... ............................. .......... Rigid insulation made from exploded 16.1 15.0 40.0 * 81 70.5 75 0.34 0.325 1.20 Plaster Board.. Pyrocell or Insulex______ Pyrocell or Insulex........... Red Top Insulating Wool- Roofing__ Temlok.. Therm-A-Pad*..,, Thermatex____ Thermax.. Thermofil____ Thermofil___ Thermasote "A'* Insulating Board.... Torfoleum___ ._______ Weatherwood_____ __ wood fibre-------------------------------- ....... Gypsum between layers of heavy paper Cellular gypsum--dry------- ---------------Cellular gypsum--dry. Fibrous material made from dolomite and silica................................. ........... Composition or prepared------------------ Rigid insulation made from wood fiber Flexible insulation made from jute....... Rigid insulation made from wood fiber Made from shredded wood and cement Dry. fluffy, flaked gypsum. Dry. fluffy, flaked gypsum--------------Made from wood fibre, chemically treated................................ ......... ............. Peat moss compressed into sheet form Rigid insulation made from hard wood 19.8 62.8 30.0 12.0 1.5 15.0 6.7 8.5 24.2 24.0 18.0 20.0 11.0 75 0.33 70 1.41 75 75 0.92' 0.40 0 75 0.27' 75 6.50*' 70 .0.33 75 0.25 72 0.294 72 0*.46 75 0.48 75 . 0.34 70 0.355 70 0.28 Wood Lath and Plaster* Yellow Pine___ _________ fibres. Lime plaster---___ Across grain--....... 15.2 ,, . 70 . 75 0.32 2.0* 1.00 In addition to the conductivity values for the authorities listed^considerable work of importance pertaining to the bea i) transmission of various types of construction and materials has been done by the late Prof. John R. Allen and tne late Pt A. J. Wood of the Engineering Experiment Station of Pennsylvania State College. *For thickness stated or used in construction, not per 1 in. thickness. *Not compressed. *Thickness of lima plaster and wood lath from back of lath to face of plaster, about % in. vSee Chapter LX. by Chas. H. Herter of the Report of the Insulation Committee,' AJS.R.E., Annual Meeting, 1922 Revised to 1924, entitled. Heat Transmission of Insulating Materials for a more comprehensive collection of heat transmission data relating to building and inflating materials. 78 Chapter 5--Heat Transmission Table 5, Conductivities (k) and Conductances (C) of Building Materials and Insulations Based on Tests Conducted at the University of Minnesota, By F. B. Rowley P Material Description Density (Lb per Cu Ft) Mean Temp (Deg Fahr) CONDUC-TIVITY (k) OR ` Conduc tance (C) Concrete----------------- ------------Dry Zero------ ------------- -- Stone 1-2-4 mix... Pliable slab form of insulation made from ceiba fibres-------- .------------------ Fir sheathing and building FirthMthirig7building paper and pine lap siding---- Fir sheathing, building paper and stucco.----------------------Gypsum Tile---------------------GIjyyppssuutmu T* ile--.. -------'-- Gypsum Fibre Concrete-- Solid__ Solid____ 87gypsum and 12H% wood chips Lath and H !** P^ateT-----Masonite--.-------------- -- Total thickness H inRigid insulation made from exploded wood fibre----- -------------------------- Pine lap siding and building paper-------------------------------Plaster. Sheet Rock Pyrofill Roofing. 2>4 in- thick------.------------ Lap siding 4 in-, wide Thickness H in..______ ______________ Plaster board, gypsum fibre concrete and 3-ply roof covering________ ___ 143.0 51.8 75.6 51.2 17.9 52.4 68.8 30.0 20.0 20.0 69.9 75.9 74.4 70.0 77.6 15.5 73.0 76.0 9.46 0.23 0.71* 0.50* 0.82* 1.66 2.96 1.66 2.50* 0.32 0.85* 8.8* 0.58* In addition to the conductivity values for the authorities iisted/considerable work of importance per taining to the heat transmission of various types of construction and materials has been done by the late Prof. John R. Allen and the late Prof. A. J. Wood of the Engineering Experiment Station of Pennsylvania State College. *For thickness stated or used in construction, not per 1 in. thickness. eSee Chapter LX. by Chas. H. Herter of the Report of the Insulation Committee, A.S.R.E., Annual Meeting, 1922. Revised to 1924, entitled Heat Transmission of Insulating Materials for a more compre hensive collection of heat transmission data relating to building and insulating materials. The coefficients in these tables were determined by calculations similar to those shown in Example 1, using Equations 2, 3, 4 and 5 and the values of k (or C),fi,f0 and a indicated in Table 7. In computing heat trans mission coefficients of floors laid directly on the ground (Table 15), only one surface coefficient (/i) is used. For example, the value of U for a 1-in. Table 6. Miscellaneous Conductivities (k) op Materials** Expressed in Btu per hour per square foot per degree Fahrenheit per inch thickness Material Description Mean Temp. (Deg Fahr) Conductivity (h)t Authority Alfol Concrete Concrete Concrete Ten Test Stone 1-2-5 mix Cinder 1-2-4 mix Various ages and mixes Rigid insulation made from wood fiber 115 95* 122 201 52 0.24 to 0.27 6.27 2.35 11.35 to 16-36 10.37 0.33 G. B. Wilkes. Mass. Inst, of Technology C. L. Norton. Boston, Mass. C. L. Norton, Boston. Mass. A.S.H.V.E. Research -Laboratory Lees and Chorlton E. A. AUcut. Uni- versity of Toronto In addition to the conductivity values for the authorities listed, considerable work of importance per taining to the heat transmission of various types of construction and.materials has been done by.tbe late Prof. John R. Allen and the late Prof. A. J. Wood of the Engineering Experiment Station of Pennsylvania State College. *Hot side of plate. *See A.S.H.V.E. Research paper entitled Conductivity of Concrete, by F. C. Houghten and Carl Gut- berlet (A.S.H.V.E. Transactions, Vo). 37. 1931). *See Chapter LX. by Chas. H. Herter of the Report of the Insulation Committee. A-S.R.E., Annual Meeting, 1922, Revised to 1924, entitled, Heat Transmission of Insulating Materials for a more compre hensive collection of heat transmission data relating to building and insulating materials.