Document a4MXkR0M9RYQmY1vXG2o6z7eX

1956 Guide CHAPTER 9 194 3 4 5 e O s* Cm i `o' X z5 < jOQ 5 oz Z 65 e w s -i Z o 0 1 < fa be O s s zz <es Xs E- S ia _ O S; OI 3 n << H fSSK&H - M m Z JS o 3333 <3000 OOOO Z c S Wood Floor* E s o %%%% 0000 oeoo il 5>3 II I* 5 a| %% -a -- i * *% *p J 3 -> - a *l l 9X eo O 0.076 0.077 0.077 0.076 SSSSS oc?pc? 0000 Ills 0000 0000 mOOO OOOO S3SS. <>009 oo| dodo 0J0 0.097 0.096 0.084 0.13 0.12 0.11 0.097 **S2S 0000 CCa6N> 0000 C$000 z eA 5& 1*1 n o Bu s^ -M " oo . -S o" "Si jril Isa A to - i c - 3 *4 m id 6 li &-s 115"* dc 8 ills C>ooO dodo aooa dood ftCOOQtO ! , 0000 1?> sinn 0000 1 1c S5S3 c$ooo gss^ C$000 woog dodo 0><OC* 00`dd 0000 41000 OOOO OOOO si* 4..-- .73 IS? .l-i 4 st; So o a .2 . =11 g-s-1 fe Jsii. v 2 J3 -S3 .0 O -H~ 509 8. -gs '.a S^5 d: 2|f i 11 p u* o {3 e Id |9 III 5?f o "S ~ta~3 3b2b mi EoSo i ;T8-g "Soil gsSg "s> Oi?m-2- & Ssl! sill ^SDffl -o'can a ^iss 8{ eiss 3 * S g 5^Zoj3 -Tc33 <. s*ii ig T3 -aH *> -I2SOSArd --" 63g iB.. .12 *J o S a .o Z7 t* .a a b-S St % '5 'is Vl 10 *1s ; .1-Sll^ *8* ll gill i H S 'll Hi I H C CO t. A *" 3 - ` -2 ogtf- 2S.% Ta3 3 --* *5~.32 -a2 x*S *o2 i = i-i b i S| l?j si US I 8 8 is g S | p* w t**S Heat Transmission Coefficients of Building Materials 195 13: (17)Table Coefficients of Transmission of Concrete Construction ... Floors and Ceilings* Coefficients are expressed in Btu per (hour) (square /rf) (Fahrenheit degree difference in temperature between ike air on the two sides), and are based on still air (no wind) conditions on both sides. TYPE OF CEILINQ Typ B OF FLOO BING Thickness ' ConOcFrete (Inches) No Flooring (Concrete Bare) Tile or Terraaso Flooring on Concrete H In. Asphalt Tile Directly on Coherete Parquettc Flooring in Mastic on Concrete' Double Bt a Wood a Floor g on .Z Sleepers" No Ceiling............................ ..................... H in. Plaster Applied to Underside of Concrete................................................... Metal Leth and Plaster*--Suspended or Furred........... ..................................... Gypsum Board (% in.) and Plaster^-- Suspended or Furred.......................... Insulating Board Lath (H in.) and Plaster-'--Suspended or Furred___ 3 6 10 3 6 10 3 6 10 3 6 10 3 6 10 A 0.68 0.59 0.50 0.63 0.54 0.46 0.38 0.35 0.32 0.36 0.33 0.30 0.25 0.23 0.22 B 6.65 0.56 0.48 0.59 0.52 0.44 0.37 0.34 0.31 0.35 0.32 0.29 0.24 0.23 0.21 C 0.66 0.68 0.49 0.60 0.53 0.45 0.37 0.35 0.32 0.35 0.33 0.30 0.25 0.23 0.22 D 0.45 0.41 0.36 0.43 0.39 0.34 0.30 0.28 * 0.26 0.28 0.27 0.24 0;21 0:20 0.19 0.25 0.23 0.22 0.24 0.22 0.21 .. 0.1*:; 0.18 0.17 0.19 0.18 0.17 0.15 0.15 0.14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 " Thickness of tile assumed to be 1 in. * See Table 5, Note a. b Conductivity of asphalt tile assumed to be 3.1. * Thickness of wood assumed to be ,He in.; thickness of mastic, Vi in. (k =* 4.5). Col. D may also be used for concrete covered with carpet. d Based on 255a in. yellow pine or fir sub-flooring and J H 6 in. hardwood finish flooring with an air space between sub-floor and concrete. * Thickness of plaster assumed to be H in. Thickness of plaster assumed to be H in. * For other thickness of concrete, interpolate. Table 14. (17)Coefficients of Transmission of Concrete Basement Floors on Ground with Various Types of Finish Flooring P = 0.10* Btu per (hr) (sq ft) (Fahrenheit degree temperature difference between the ground and the air over the floor). * Since authentic data are not available, this coefficient ia sometimes used for concrete floors on ground, ror more recent procedures refer to Notional Bureau of Standards Report BMS-103.1*'u Basement Floor, Basement Wall and Concrete Slab Floor Coefficients The heat transfer through basement walls and floors to the ground is dependent on the temperature difference between the air within and that of the ground, on the material constituting the wall or floor, and on the conductivity of the surrounding earth. The conductivity of the earth 'aq vary with local conditions, and is usually unknown. Tests12 at the AjS.H.A.E. Research Laboratory indicate a heat flow of approximately LO Btu per (hr) (sq ft) through an uninsulated concrete basement floor, with a temperature difference of 20 deg between ground temperature and the air temperature 6 in. above the floor. Based on this result a coeffi cient of 0.10 Btu per (hr) (sq ft) (Fahrenheit degree difference) is recom mended for calculation where it is desirable to allow for the small base ment floor heat loss, e.g., for heated basements. For basement walls the same coefficient may be used, but due to closer Proximity to the surface of the ground, the temperature difference for win-