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Hello. I have added sister joists 3 feet long coming off load bearing wall. The tank is 2 feet from load bearing wall towards middle of room so the sister joists expand past the tank. I then bridged between the joists. I’m wondering if I need to add a 4x4 across the 3 joists and jack up then keep the jack in place. I would prefer not to do that so there isn’t a floor jack in the middle of basement. Tank is 140 total gallons on load bearing wall.