1111 80TH ST SW NATURAL FACTORS 2016-01-01 MF Import

-1997 EDITION SECTION 1003 — ON-GRADE SLAB FLOORS Two Fool(or four foot) ,rertical: Insulation is applied 1003.1 General:Table 10-2 lists beat loss coefficients for directly to the slab exterior, extending downward from the heated on-grade slab floors, in units of Btu/•F•hr per, top of the slab to a depth of 2 feet(or 4 feet)below grade. lineal foot of perimeter. . ,. Two Foot directly tour fool) horizontal: lab, and applied directly to the underside of the slab,and nm 1003.2 Component Description: All on-grade slab floors horizontally from the perimeter inward for 2 fat(or 4 aro assumed to be 6-inch concrete poured directly onto the feet). The slab edge is exposed in this configuration. , earth, The bottom of the slab is assumed to be at grade line. Monolithic and floating slabs aro not differentiated., Note: A horizontal installation with a thermal bneak of Soil is assumed to have a conductivity of 0.75 Btulh•R• at least R-5 at the slab edge should use the vertical-case F-fuWrs. 'F. Slabs 2 feet or more below grade should use basement coefficients. Fully insulated slab: Insulation extends from the tap of the slab, along the entire perimeter, and completely covers 1003.3 Insulation Description: Coefficients ate provided the area under the slab. for the following three configurations: TABLE 10-2 DEFAULT F-FACTORS FOR ON-GRADE SLABS Insulation _ e R-0 R-5 R 10 R:1 60 Unheated Slab Uninsulated slab 0.73 ft Horizontal Horizontal No thermal break 0.70 0.70 0.69 4-ft Horizontal No thermal break — 0.67 0.64 0.63 2-R Vertical — 0.58 0.54 0.52 4-R Vertical 0.54 0.48 0.45 Fullv in-elated slab — 0.36 Heated Slab Uninsulated slab 0.84 — — — Fully insulated slab 0.74 0.55 0.44 R-5 Center(With T>erimeter insulation) 0.66 0.62 R-10 Center iCi perimeter insulation) — 0.51 3-R Vertical — 0.78 — 49