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Permit No. <br /> ��',' `��' F � C 5 ; �(' 3 ri nf I ,t 4 .f� t � f �v n� j } �«� �' Zh'+.,F'�1 ff t�G.�sT i `���.,.�� � <br /> �l . .. ,,:. F j:. . ,... ,..., t . <br /> �� _� Heat source: ELECTRIC (except heat pumps), Zone 1 �, =a;\�� ; <br /> lnstructions EffeCtive July 1, 1991 <br /> Overvlew The Chapter 5 Approach allows any combination of building envelope components as long as the <br /> collective heat loss doesn't exceed a maximum limit established by code. The calculations on the lower part of this <br /> page may be ignored 'rf betow grade wall insulation will either be R19 on the interior or R10 e�lerior, or K the <br /> basement wili not bo a habitahle space and unheated, and the (loor above is insulated. <br /> Page 2, Base Case Dwelling Calculatlon Compute areas using outer surtaces(or walls, caiiings (less skylights), <br /> and floors. Use t.ie iough iramed opening areas (or doors.The giazing area is derived by m�ltiplying a constant <br /> value (.15) by the sum of the conditioned floor areas(Don't fnclude unheated attached garages, etc). <br /> Page 2, Proposed Dwelling Calculation Compute areas using outer surtaces torwalls,coilings, and floors. Use the <br /> rough iramed opening areas lor doors and glazing. Since there are only tour boxes on ih? form for glazing,combine � <br /> the areas ot units with the same Uo value into a sinc�le entry. WSEC, Chapter 10, default values must be used tor all <br /> walls, ceilings, floors, unlested doors/glazing, and to determine below-grade walUslab UA. <br /> The Proposed Dwelling complys If the the Proposed UA doesn't exceed tha Base Case UA. <br /> Transfer wall, CeUing, tloor; glazing, and doorvalues (R and U) to the Check Iist. <br /> Method A (below-gr�dr� wa1!/slab heat-loss fradeoffs) � �� <br /> L For each wall that diifers in depth,periorm a seperate calculation using Steps 2& 3. Sum the totats. <br /> 2.°Deterrpine wall arQa'from the slab s rta0e �o the top oi the mucJ ili. Exdude dpor and giazing areas and insen <br /> them mio3he designated bozes be�ow tor ooth Base case and �roposetl healloss: <br /> 3: Fmd.ihe �pp ropriate wall depths in Tab1e t and insert the corre gpondingwail values into thP 8ase case box(os). <br /> Multiply 'tttA corresponding wall U-value by the area derived in Slep#1. : <br /> 4..Meas�U re the�erim�t�r disfance ln lin�,er feet for each slab under a wail with a diflerert Table 1 deplh Insert the <br /> slab F-value rom a le 1 correspon mg to each wallJisied in Step n3. <br /> BASE C�SE HEATLrJSS � " <br /> ' B.G.wall#1 (Ft2) x U_ = Table 1 (Below grade wall/slabs) <br /> ` B.G. slab#1 (L. Ft) x F_ _ . Itlsulated InteNor wall Vaiues <br /> r B.G. wall#2 (Ft2) x U_ = 2'depth: wa!!s U.043 <br /> B.G. slab#2 (L. Ft) x F_ = slab F.69 <br /> 3.5'depth: walls U.041 <br /> ' TOTAL COLUMN --1• slab F.64 <br /> ' ; 7'depih: walls U.037 r' <br /> PROPOSED HEATLOSS slab F.57 <br /> Use Chupter 10, page 81, U & F-values for this caiculation �/atad rxt rlor wall <br /> ' and the same BASE CASE area/L. ft. measurements. <br /> 2'depth: walls U.070 <br /> ' B.G. wall#1 (F12) x U_ = slab F.60 <br /> ' B.G. slab#1 (L. Ft) x F_ = 3.5'depth: walls U.064 <br /> slab F.57 <br /> B.G. wall #2 (Ft2) x U_ = 7'depth: walls U.056 <br /> ' slab F.42 <br /> B.G. slab 112 (L. Ft) x F_ _ <br /> ('Depth'indicatos iho total concrote wall depth <br /> „�`.� °"r,:N�'t",i°"t"9, TOTAL COLUMN including not more than �• of above gradc <br /> Page 1 _ -- <br />