Section 1335.5 - Load Bearing Support Systems Without Manufacturer's Installation Instructions(a) MH-units manufactured prior to October 7, 1973, or MH-units for which the manufacturer's installation instructions are unobtainable, shall be supported in accordance with this subsection or on a foundation system in accordance with section 18551 of the Health and Safety Code. MH-units installed in areas exceeding a thirty (30)-pound roof live load, or to different requirements than prescribed in this section, shall have support systems designed and approved by an architect or engineer. The MH-unit shall be supported as follows: (1) Main chassis beam supports spaced not more than six (6) feet apart longitudinally, as determined from table 1335.5-1,(2) Ridge beam support systems as determined from table 1335.5-2, and(3) wall supports under each end of a side wall opening that is forty-eight (48) inches or more in width, and under the perimeter walls at eight (8) foot intervals with footing sizes not less than two hundred seventy-five (275) square inches. TABLE 1335.5-1 |
MH-unit Section Widths |
|
Width of MH-unit Section | Footing Area |
| 8 ft. wide | 175 sq. in. |
| 10 ft. wide | 217 sq. in. |
| 12 ft. wide | 259 sq. in. |
| 14 ft. wide | 303 sq. in. |
| 16 ft. wide | 346 sq. in. |
TABLE 1335.5-2 |
|
Span in feet | Unit Section Width |
Between | 10 Foot | 12 Foot | 14 Foot | 16 Foot |
Ridge Beam Locations | Load in Pounds Per Square Foot |
| Up to 5 | 1250 | 1500 | 1750 | 2000 |
| 6 | 1500 | 1800 | 2100 | 2400 |
| 7 | 1750 | 2100 | 2450 | 2800 |
| 8 | 2000 | 2400 | 2800 | 3200 |
| 9 | 2250 | 2700 | 3150 | 3600 |
| 10 | 2500 | 3000 | 3500 | 4000 |
| 11 | 2750 | 3300 | 3850 | 4400 |
| 12 | 3000 | 3600 | 4200 | 4800 |
| 13 | 3250 | 3900 | 4550 | 5200 |
| 14 | 3500 | 4200 | 4900 | 5600 |
| 15 | 3750 | 4500 | 5250 | 6000 |
| 16 | 4000 | 4800 | 5600 | 6400 |
| 17 | 4250 | 5100 | 5950 | 6800 |
| 18 | 4500 | 5400 | 6300 | 7200 |
| 19 | 4750 | 5700 | 6650 | 7600 |
| 20 | 5000 | 6000 | 7000 | 8000 |
| 21 | 5250 | 6300 | 7350 | 8400 |
| 22 | 5500 | 6600 | 7700 | 8800 |
| 23 | 5750 | 6900 | 8050 | 9200 |
| 24 | 6000 | 7200 | 8400 | 9600 |
| 25 | 6250 | 7500 | 8750 | 10000 |
(b) Multi-section homes manufactured prior to October 7, 1973 or multi-section homes for which the manufacturer's installation instructions are unobtainable, shall be interconnected as designed and approved by an architect or engineer or as follows: (1) Floor connections shall be made with a three-eighths ( 3/8) inch diameter lag bolt or equivalent, of a length sufficient to ensure a tight connection as determined by the enforcement agency at the time of inspection. The lag bolts shall be installed twenty-four (24) inches on center. The lag bolts shall be staggered on alternating sides located where the multi-section floor lines meet.(2) Roof connections shall be made with a three-eights ( 3/8) inch diameter lag bolt or equivalent, of length sufficient to ensure a tight connection as determined by the enforcement agency at the time of inspection. The lag bolts or equivalent shall be installed twenty-four (24) inches on center. The lag bolts shall be staggered on alternating sides where the multi-section rooflines meet.(3) End wall connections shall be made with a number eight (8) screw or equivalent, of length sufficient to ensure a tight connection as determined by the enforcement agency at the time of inspection. The screws shall be installed eighteen (18) inches on center. The screws shall be staggered on alternating sides where the multi-section end walls meet.Cal. Code Regs. Tit. 25, § 1335.5
1. Renumbering and amendment of former section 1342 to new section 1335.5 filed 9-8-94 as an emergency; operative 9-19-94 (Register 94, No. 36). A Certificate of Compliance must be transmitted to OAL by 1-17-95 or emergency language will be repealed by operation of law on the following day.
2. Renumbering and amendment of former section 1342 to new section 1335.5 and amendment of NOTE refiled 1-18-95 as an emergency; operative 1-17-95 (Register 95, No. 3). A Certificate of Compliance must be transmitted to OAL by 5-17-95 or emergency language will be repealed by operation of law on the following day.
3. Certificate of Compliance as to 1-18-95 order transmitted to OAL 3-31-95 and filed 5-12-95 (Register 95, No. 19).
4. Amendment of section heading, section and NOTE filed 7-6-2004; operative 7-6-2004 pursuant to Government Code section 11343.4 (Register 2004, No. 28).
5. Amendment of section heading and amendment of Table 1335.5-1 within subsection (a)(3) filed 2-19-2013; operative 4-1-2013 (Register 2013, No. 8). Note: Authority cited: Section 18300 and 18613, Health and Safety Code. Reference: Section 18613, Health and Safety Code.
1. Renumbering and amendment of former section 1342 to new section 1335.5 filed 9-8-94 as an emergency; operative 9-19-94 (Register 94, No. 36). A Certificate of Compliance must be transmitted to OAL by 1-17-95 or emergency language will be repealed by operation of law on the following day.
2. Renumbering and amendment of former section 1342 to new section 1335.5 and amendment of Note refiled 1-18-95 as an emergency; operative 1-17-95 (Register 95, No. 3). A Certificate of Compliance must be transmitted to OAL by 5-17-95 or emergency language will be repealed by operation of law on the following day.
3. Certificate of Compliance as to 1-18-95 order transmitted to OAL 3-31-95 and filed 5-12-95 (Register 95, No. 19).
4. Amendment of section heading, section and Note filed 7-6-2004; operative 7-6-2004 pursuant to Government Code section 11343.4 (Register 2004, No. 28).
5. Amendment of section heading and amendment of Table 1335.5-1 within subsection (a)(3) filed 2-19-2013; operative 4-1-2013 (Register 2013, No. 8).