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<br /> <br />Where jacking cannot be used to raise the <br />manufactured home to the required elevation, the <br />use of a crane should be considered. <br /> <br />Utility Service <br />Water, sewer, and gas services enter manufac- <br />tured housing under the floor and originate from <br />grade beneath the home. To connect the manufac- <br />tured home to these services, utility pipes must <br />extend from grade to the floor of the manufactured <br />home. This location makes them extremely <br />susceptible to flood inundation (leakage) and <br />damage from floating debris. To minimize damage <br />to these pipes, they should be placed in waterproof <br />risers which are located adjacent to the elevated <br />foundation members on the downstream side of <br />the flood flow as shown in Figure 4.56. <br /> <br /> <br />,10 <br /> <br />Figure 4.56 Utility Service Protection <br /> <br />Underground telephone and electric service <br />should also be enclosed in a waterproof riser and <br />protected as above for other utility service. If elec- <br />trical and telephone service is supplied from <br />overhead lines, the service connection to the <br />manufactured home must be located above antici- <br />pated flooding as shown in Figure 4.57. <br />Applicable codes and regulations must also be <br />followed when designing and instaliing utility ser- <br />vice. These provisions may also require water- <br />proofing of all connections, backflow preventors <br />on water and sewer service, and the use of cer- <br />tain specific waterproof materials in and for these <br />services. <br />Propane and fuel oil tanks used to supply <br />energy for heating or other services should be <br /> <br /> <br />Figure 4.57 Overhead Utility Service <br /> <br />located in a waterproof enclosure or elevated <br />above the anticipated flood level. <br />Methods to support these tanks above grade <br />include separate elevated foundation systems or <br />support from a platform built off the manufactured <br />home foundation system. To minimize the poten- <br />tial for debris impact and damage, tanks and their <br />supporting foundation should be located on the <br />downstream side of the manufactured home. <br />Figures 4,58 and 4.59 show suggested methods <br />of elevating utility service tanks. <br /> <br />~ <br /> <br /> <br />- <br /> <br />Figure 4.58 Separate Utility Service Tank <br />Foundation <br /> <br />Mechanical Systems <br />Heating and air-conditioning equipment in- <br />stalled inside the manufactured home will gen- <br />eraliy be located directly under or on the floor. <br />Elevation of the manufactured home above poten- <br />tial floods will, therefore, eliminate their being <br /> <br />69 <br />