Document 15MO5Qe7gzGjzB7oRdr6dkMJK
American Society 0/ Heating and Ventilating Engineers Guide, 1935
........
(T able 9. Coefficients of T ransmission U) of Concrete Construction Floors and Ceilings3
Coefficients ore expressed in B tu Per hour per square foot Per degree Fahrenheit difference in temperature between the a ir on the two sidest and are based on s till a ir (no w ind) conditions on both sides.
T Y P IC A L CONSTRUCTION
T ype of Ce ilin g
.T hickness op
Concrete
( Inches)
1
i
6
25.
|
1
No Flooring (Concrete Bare)6
TY P E OF FLOORING
. Yellow Pine
Flooring* on Wood Sleepers
Embedded in Concrete*1
Maple or Oak Flooring* on Yellow Pine Sub-Flooring*
on Wood
Sleepers Embedded in
Concrete
Tile or Terrazio/ . . . Flooring o n .. . Concrete
K *m.
Battleship Linojeum D ire c tly
on Concrete
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N o C e llin g
H in. P la s te r A p p lie d D ire c tly , to U n d e r S ide
of-C oncrete
. -.................. ...............................-
Suspended o r F u rre d M e ta l L a th and P laster (%in .). C e llin g
0.59
1
I 0.54 0 .5 0
l 0.45
108
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.
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.
QC
Suspended o r F u rre d C e llin g o f P la ste r Board (H in.) a n d P la s te r (H inO ,
P la s te r (H in.) o n C o rk b o a rd (1 H in.) S et in C e m e n t M o rta r (H in.) o n C o n cre te
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1
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