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2010 Oregon Manufactured Dwelling Installation Specialty Code <br /> (4) Unless specifically allowed by the (1) Masonry block skirting shall be made with <br /> manufacturer's installation instructions, there concrete masonry units, cinder block, <br /> kor shall be no unbalanced fill in excess of 8 in. pumice block, brick, block, or stone, and <br /> supported by prefabricated skirting. Such shall be a minimum of 4 in. thick. Masonry <br /> designed backfill provision may not transfer block skirting is not required to be rated for <br /> any horizontal loading to the manufactured structural strength if it is not being used as <br /> dwelling, and must be supported solely by perimeter support. <br /> the skirting structure. (2) Masonry block skirting shall be supported by <br /> (5) Prefabricated skirting may take the place of and mortared to a concrete footing a <br /> recessed perimeter pier supports if the minimum of 12 in. wide by 6 in. deep, or on a <br /> skirting is rated for a 4,000 pound design footing described in Section 3-6 if used for <br /> load, supported on a minimum 256 square perimeter support. <br /> inch footing, and spaced according with (3) Masonry block skirting shall be mortared at <br /> Table 3-7.4 or a concrete runner or slab. If each joint or dry stacked and filled with <br /> the skirting manufacturer allows unbalanced concrete, or dry stacked and .interlocked <br /> fill in excess of 8 in. to be supported by the when manufactured with an interlocking <br /> prefabricated skirting, the concrete runner or system. <br /> slab shall be installed according to Section (4) Masonry block skirting may support up to 8 <br /> 4-3. in. of unbalanced fill without having to be <br /> (6) Prefabricated structural skirting that retains constructed as a foundation wall or retaining <br /> over 8 in. of backfill must be waterproofed wall. <br /> below grade around the perimeter of the (5) Masonry block skirting may take the place of <br /> home. the recessed perimeter pier supports if <br /> 4-7 Masonry Block Skirting. constructed with ASTM C 90 rated concrete <br /> 4-7.1 Masonry Block Skirting. Masonry block block, capped with a pier cap, and shimmed <br /> 41/ skirting shall be installed according to the up to the bottom of the floor at each location <br /> following and Figure 4-7.1: required in Table 3-7.4. <br /> A1^ VI SIDEWALL <br /> TYPICAL SIDING <br /> CAULKING i YPlpAL FLOOR <br /> 4% ct, <br /> TRIM BOARD- CW15515 <br /> ` Ii, CMU <br /> ,11 Bin. MA%. BpRTINC <br /> - BPCKF6 i12 <br /> OOTING <br /> L 6 in. MIN. <br /> . .� 1ll �� =1[=1f <br /> . . . . . . . . . . . .`III�IA�•\ 12 in. MIN. <br /> „ I I, (FOOTING OR OPTIONAL 3 1/2 in. <br /> 4 + e . \ FIBER REINFORCED 48 i . WIDE SLAB.) <br /> 1� <br /> ii y - 4 . y 4 . - • V • II L�r HOLLOW CONCRETE <br /> Mart. . . . 4 . 4 4 ` 4 . . 11 'I' MASONRY AT UNITS (CMU) <br /> I II If- . A=11 I GROUTED AT JOINTS <br /> I ICI . I II II ONLY BUT NOT FILLED <br /> 24 11 I 111 �Ier=8-411 ®� <br /> 1 II-II1LB= 11-' II� BARRIER MOISTURE <br /> I II'-I I I I I ilad'� IGI BARRIER <br /> '1,8 I II I 1 �IF�1�L. F=1Li I . NOT CMU SKIRTING NOT �i\ <br /> � I I lirl AligiVI1 II INTENDED TO SUPPORT 3•114 <br /> L IIK V,11 -I III'Ill I ANY VERTICAL LOADS. II. `I RABER UNNEREOR STAB <br /> -11y1 - NDIE 8 in. MAXIMUM BACKFILL <br /> `r AGAINST CMU SKIR11NC. <br /> Figure 4-7.1 Concrete Masonry Block(CMU)Skirting Detail <br />