ᐅ Supporting Basement Ceiling with Timber Props – Load Relief?

In my house, completed in 2004/5, I installed two wooden supports under the basement ceiling on top of a 1.00 meter (3.3 feet) high, approximately 2.00 meter (6.6 feet) long, and 12.5 cm (5 inches) thick Poroton brick wall. The supports measure 9 cm by 9 cm (3.5 inches by 3.5 inches) and are 154 cm (5 feet) tall. They are intended to provide additional support for the approximately 28 square meter (300 square feet) and 18 cm (7 inches) thick B 25 concrete slab beneath the living room. I know the exact load after placing an additional piece of furniture, an electric organ weighing 250 kg (550 lbs), but the total estimated load is about 3.6 tons. The weight of the tiled stove is unknown (1.4 tons included in the 3.6 tons estimate, but the stove installer would not give a definitive figure). However, the architect planned a reinforcement of the ceiling in the area around the stove back in 2004; as he is now retired, further detailed inquiries are not possible. So far, there have been no cracks or deformations in the wall, supports, or ceiling.