Heating and ventilation of dwellings / by the Heating and Ventilation (Reconstruction) Committee of the Building Research Board of the Department of Scientific & Industrial Research.

Date:
1945
Catalogue details

Licence: Public Domain Mark

Credit: Heating and ventilation of dwellings / by the Heating and Ventilation (Reconstruction) Committee of the Building Research Board of the Department of Scientific & Industrial Research. Source: Wellcome Collection.

    195/232 (page 193)
    HEAT TRANSMITTANCE COEFFICIENTS is severe, and deducted for sheltered sites. Many of the figures given have been taken by permission of the Institution of Heating and Ventilating Engineers from a booklet entitled The Computation of the Heat Requirements for Buildings, where more detailed figures giving allowances for exposure and orientation may be found. THERMAL TRANSMITTANCE U (B.Th.U. per sq. ft. per CONSTRUCTION hr. per deg. F. difference of air temperature) WALLS BRICKWORK Solid, unplastered 44 in 0°64 be) > 9 be] 0°47 9? 39> 133 be) O37 Solid, plastered 44 ,, O57 ” » 9 » 0°43 » > 13% 4, 0°35 ' Solid partition walls, plastered both sides 43 ,, 0°46 > - ” ” 9 ” 9 9 » 0°36 Cavity, plastered (unventilated) eee 0°30 > 5 15 2p 0°26 - is (ventilated) BON. 0°34 » 29 9 D525, 0°29 CONCRETE Ballast | Slee 0°64 OF oy 0°54 ey 0°47 Foamed slag (light mix) O48 0:16 Partition walls, foamed slag (light mix) Aes 0°27 ‘SG ie ecHnker Pa oh 0°46 LINED CONSTRUCTIONS g-in. foamed slag concrete, with 4-in fibreboard O14 Do. with 1-in fibreboard O'12 4-in foamed slag concrete partition wall, with 1-in. fibre- board 0:16 44-in brick, 2-in. cavity, 3-in. foamed slag concrete 0°24 Do. with 4-in. fibreboard 018 Do. with 1-in. fibreboard o'l4 ¢-in. asbestos cement sheets, 2-in. cavity, 4-in. foamed slag concrete 0°24 Do. with 4-in. fibreboard 0-18 Do. with 1-in. fibreboard O14 g-in. solid brick wall, with 4-in. fibreboard on battens O22 Do. with 1-in. fibreboard on battens Or rT II-in. cavity (unventilated), with 4-in. fibreboard on battens o'18 Do. with 1-in. fibreboard on battens Or15 II-in. cavity (unventilated) ; 2-in. wood wool O'15 ¢-in. asbestos cement, 4-in. cavity, 2-in. wood wool, plastered d OE SHEET CONSTRUCTIONS t-in. asbestos cement sheet 0:89 Corrugated asbestos cement sheet E25 Pp iron 5/5 in. 1°20 Woop Exterior, 1 in. 0°50 Interior, I in. O'4I GLASS Single glazing Double glazing