Installed an Atlas BP8000 (8K capacity) in a standard 2 car garage with 8.5ft height (open joists). Drew up some plans to create an 8ftx17ft at 10ft height tray opening in ceiling (not an engineered truss system). Ran the plans through a couple of construction forums and also my cousin, a 30yr professional framer. Removed 3 ceiling joists, added 3 rafter ties, boxed each end with a steel beam. Double sistered the perimeter joists (3 total). The steel beam bolts to the sisters. Welded joist hangers to the beam and nailed the joist stubs to the hangers. Design:
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10ft height works great for cars, but the Rebel is a handfull. Can get the Rebel about 3 1/2ft into the air, tight squeeze on my rolling stool but workable. As others have opined, concrete is the key. My case, std 3 1/2" slab (plus/minus), not nearly suitable. Cut two 4ftx4ft sections centered on post positions. Excavated to 15", undercut existing slab, installed rebar cage, and poured 4000psi concrete mix.
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Cured 30 days, then drilled 1" holes using post baseplate as template. Lift came with standard wedge anchors, but I opted for Wej-it Power Sert epoxy anchors. One other thing...recommend a quick disconnect close to and ahead of the power unit. These type push button electrical contacts have been known to fail closed, that is, welded together to create runaway condition.
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