Laserfiche WebLink
i -CONSTRUCTION_ASSEMBLY <br /> Page_133R <br /> Project Title . . . . . . . . . . Boyett Residence Date. . 03/20/02 10 :56 :40 <br /> _ MICROPAS6 v6 . 00 File-BOYETT TWth-CTZ12S92Program-FORM 3R <br /> User#-MP0837 User-SKW & Associates Run-Boyett Residencey <br /> ---- I <br /> --------------------------------- Parallel Path Method <br /> Reference Name . R.38 . 2X4 .24 <br /> Description . . . . Roof R-38 2x4 24oc <br /> Type Roof <br /> R-Value . . . . . . . . 38 Hr-sf-F/Btu <br /> Framing <br /> Material FIR.2X4 <br /> Type . . . . . . . . . Wood <br /> Description . . 2x4 fir <br /> Spacing . . . . . . 24 inches on center <br /> Framing Frac . . 0 .07 <br /> --------------------------------- <br /> Sketch of Construction Assembly <br /> LIST OF CONSTRUCTION COMPONENTS <br /> Material Cavity Frame <br /> Name Description R-Value R-Value <br /> ----- -- - <br /> 0. FILM.EX Exterior air film: winter value0 .17 0 .17 <br /> 1 . SHNGL.ASPHLT Asphalt shingle roofing 0 .44 0 .44 <br /> 2 . BLDG.PAPER Building paper (felt) 0.. 06 0 . 06 <br /> 3 . PLY.0 .50 . 0 . 50 in plywood 0 . 62 0 . 62 <br /> 4 . AIR.RF.3 .50 3 .5 in & greater air space : heat flow up 0 .80 0 . 80 <br /> 5 . BATT.R27 .0 R-27 batt insulation 27 . 00 27 .00 <br /> 6c. BATT.RII .0 R-11 batt insul (cavity > 3 . 5 in) 11 .00 - <br /> 6f . FIR.2X4 2x4 fir -- 3 .46 <br /> 7 . GYP.0 . 50 0 .50 in gypsum or plaster board 0 .45 0 .45 <br /> I . _ FILM. IN.RF Inside air film: heat flow straight up 0 . 61 0 .61 <br /> - <br /> Total Unadjusted R-Values 41 . 15 33 . 62 <br /> FRAMING ADJUSTMENT CALCULATION <br /> Cavity Framing Total <br /> U-Value: (1 / 41 .15 x 0 . 93) + (1 / 33 . 62 x 0 . 07) = 0 . 025 Btu/hr-sf-F <br /> Total R-Value : 1 / 0 . 025 = 40 .51 hr-sf-F/Btu <br /> X <br />