| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 1<\/td>\n | BRITISH STANDARD <\/td>\n<\/tr>\n | ||||||
| 2<\/td>\n | Committees responsible for this British\ufffdStandard <\/td>\n<\/tr>\n | ||||||
| 3<\/td>\n | Contents <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | Foreword Foreword to amendment A1 Contents <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | Introduction 1 Scope 2 Normative references 3 Definitions and symbols 3.1 Definitions 3.1.1 building element 3.1.2 building component 3.1.3 design thermal value <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 3.1.4 design thermal conductivity 3.1.5 design thermal resistance 3.1.6 thermally homogeneous layer 3.2 Symbols and units 4 Principles <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 5 Thermal resistances 5.1 Thermal resistance of homogeneous layers 5.2 Surface resistances Table 1 Surface resistances (in m <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 5.3 Thermal resistance of air layers Table 2 Thermal resistance (in m <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 5.4 Thermal resistance of unheated spaces Table 3 Thermal resistance of roof spaces <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 6 Total thermal resistance 6.1 Total thermal resistance of a building component consisting of homogeneous layers 6.2 Total thermal resistance of a building component consisting of homogeneous and inhomogeneous … <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | Figure 1 Sections and layers of a thermally inhomogeneous component <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 7 Thermal transmittance <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | Annex A (normative) Surface resistance A.1 Plane surfaces Table A.1 Values of the black-body radiative coefficient <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Table A.2 Values of Rse at various wind speeds A.2 Components with non-planar surfaces Figure A.1 Actual and projected areas <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Annex B (normative) Thermal resistance of unventilated airspaces B.1 General B. 2 Unventilated airspaces with length and width both more than 10 times thickness <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | B.3 Small or divided unventilated airspaces (air voids) Figure B.1 Dimensions of small airspace Annex C (normative) Calculation of the thermal transmittance of components with tapered layers C.1 General <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Figure C.1 Principle of build-up of component Figure C.2 Examples of how to subdivide roofs into individual parts C. 2 Calculation for common shapes <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | C.2.1 Rectangular area C.2.2 Triangular area, thickest at apex C.2.3 Triangular area, thinnest at apex C.3 Calculation procedure <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Annex D (normative) Corrections to thermal transmittance D.1 General D.2 Correction for air gaps <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | D.3 Correction for mechanical fasteners Table D.2 Values of coefficient a D.4 Correction procedure for inverted roofs D.4.1 General <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | D.4.2 Symbols and units D.4.3 Correction due to water flowing between the insulation and the waterproofing membrane D.4.4 Correction to thermal conductivity <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | Annex E (informative) Examples of corrections for air gaps <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | Annex ZA (normative) Normative references to International Standards and corresponding European publications <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Building components and building elements. Thermal resistance and thermal transmittance. Calculation method<\/b><\/p>\n |