Page 949 - 2018_IRC

APPENDIX R

3
1
2. Horizontal stabilization shall be installed at not more sions: / -inch (19.1 mm) bamboo, / -inch (12.7 mm)
2
4
than 24 inches (610 mm) on center and in accordance fiberglass rod, 1-inch (25 mm) wood dowel or nomi-
with Figure AR103.2.4(1), AR103.2.4(2) or nal 1-inch by 2-inch (25 mm by 51 mm) wood.
AR103.2.4(3). Horizontal stabilization shall be of any
of the following with the stated minimum dimen-
TABLE AR103.2.3
REQUIREMENTS AND PROPERTIES OF LIGHT STRAW-CLAY MIXTURES a
Minimum
Density Straw Subsoil Water Min.% clay clay: silt Subsoil testing Max. wall R-value
(pcf) (pcf) (pcf) (gal/cf) b in subsoil method c, d thickness, inches (hr/F°/cf/BTU/inch)
ratio
10 6.7 3.3 1.55 70 3.5:1 A 15 1.80
12 6.7 5.3 1.63 46 1.7:1 A 15 1.72
13 6.7 6.3 1.67 40 1.33:1 A 15 1.69
15 6.7 8.3 1.74 35 0.95:1 A 15 1.63
20 6.7 13.3 1.93 30 0.60:1 A 12 1.48
30 6.7 23.3 2.31 NA NA B 12 1.22
40 6.7 33.3 2.70 NA NA B 12 1.01
50 6.7 43.3 3.08 NA NA B 12 0.84
©Douglas Piltingsrud and StrawClay.org. Used by permission.
a. Interpolation permitted. Extrapolation not permitted.
b. Water mixed with subsoil equals clay slip.
c. Subsoil Testing Methods:
A.Lab test for percent of clay, silt and sand via hydrometer method.
B. Ribbon Test or the Figure 3 Ball Test in the Appendix of ASTM E2392/E2392M.
d. Trace amounts of organic materials are acceptable.

DOUBLE TOP PLATE
VERTICAL SOLID BLOCKING DOUBLE TOP PLATE
FLAT SOLID BLOCKING
FLAT SOLID BLOCKING
LADDER (LARSEN) TRUSSES MADE
WITH 2x4s AND GUSSETS PER WOOD METAL STRAP BRACING (LIB)
SECTION AR103.2.4, ITEM 1 PER TABLE R602.10.4 WHERE
APPLICABLE PER SECTION R602.10
GUSSETS: /8″ x 3″ PLYWOOD OR 1x4
3
FASTENERS: 4-4d NAILS OR 4- 1¾″
STAPLES 2X STUDS PER
SECTION AR103.2.4, ITEM 1
WOOD OR METAL STRAP BRACING
(LIB) PER TABLE 602.10.4 WHERE 1x1 CLEAT CENTERED ON EACH STUD
APPLICABLE PER SECTION R602.10 FACE BETWEEN HORIZONTAL
STABILIZATION
LIGHT STRAW-CLAY INFILL
HORIZONTAL STABILIZATION OF
HORIZONTAL STABILIZATION OF LIGHT STRAW-CLAY PER
LIGHT STRAW-CLAY PER SECTION AR103.2.4, ITEM 2
SECTION AR103.4, ITEM 2
LIGHT STRAY-CLAY INFILL
ANCHORAGE PER SECTION R403.1.6
ANCHORAGE PER SECTION R403.1.6
2X SILL PLATE 2X SILL PLATE
CONCRETE OR MASONRY CONCRETE OR MASONRY
FOUNDATION PER SECTION R401 FOUNDATION PER SECTION R401
FRAMING FASTENERS FRAMING FASTENERS PER
PER TABLE R602.3(1) TABLE R602.3(1)

FIGURE AR103.2.4(1) FIGURE AR103.2.4(2)
LIGHT STRAW-CLAY WALL WITH LARSEN TRUSSES LIGHT STRAW-CLAY WALL SINGLE STUD WIDTH

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