Specifications - Lord and Son Construction, Inc.

carrier type. The carrier shall provide the necessary means of mounting the
fixture, with a foot or feet to anchor the assembly to the floor slab.
Adjustability shall be provided to locate the fixture at the desired height
and in proper relation to the wall. Support plates, in lieu of chair
carrier, shall be fastened to the wall structure only where it is not
possible to anchor a floor-mounted chair carrier to the floor slab.
3.3.5.1 Support for Solid Masonry Construction
Chair carrier shall be anchored to the floor slab. Where a floor-anchored
chair carrier cannot be used, a suitable wall plate shall be imbedded in the
masonry wall.
3.3.5.2 Support for Concrete-Masonry Wall Construction
Chair carrier shall be anchored to floor slab. Where a floor-anchored chair
carrier cannot be used, a suitable wall plate shall be fastened to the
concrete wall using through bolts and a back-up plate.
3.3.5.3 Support for Steel Stud Frame Partitions
Chair carrier shall be used. The anchor feet and tubular uprights shall be
of the heavy duty design; and feet (bases) shall be steel and welded to a
square or rectangular steel tube upright. Wall plates, in lieu of flooranchored
chair carriers, shall be used only if adjoining steel partition
studs are suitably reinforced to support a wall plate bolted to these studs.
3.3.6 Backflow Prevention Devices
Plumbing fixtures, equipment, and pipe connections shall not cross connect
or interconnect between a potable water supply and any source of nonpotable
water. Backflow preventers shall be installed where indicated and in
accordance with at all other locations necessary to preclude a crossconnect
or interconnect between a potable water supply and any nonpotable
substance. In addition backflow preventers shall be installed at all
locations where the potable water outlet is below the flood level of the
equipment, or where the potable water outlet will be located below the level
of the nonpotable substance. Backflow preventers shall be located so that
no part of the device will be submerged. Backflow preventers shall be of
sufficient size to allow unrestricted flow of water to the equipment, and
preclude the backflow of any nonpotable substance into the potable water
system. Bypass piping shall not be provided around backflow preventers.
Access shall be provided for maintenance and testing. Each device shall be
a standard commercial unit.
3.3.7 Access Panels
Access panels shall be provided for concealed valves and controls, or any
item requiring inspection or maintenance. Access panels shall be of
sufficient size and located so that the concealed items may be serviced,
maintained, or replaced. Access panels shall be as specified in Section 05
50 13 MISCELLANEOUS METAL FABRICATIONS.
3.3.8 Traps
Section 22 00 00 Page 40