Thinking about it, the angle iron, if attached to the concrete block away from the edge, would likely have the strength itself to support the pan, thereby not putting any structural stress on the fire bricks.
2022 - 5 pan block arch - 109 taps, 73 on 3/16 lines, 36 on drops into 5 gallon pails.
930 gallons boiled, 109 L (28.8 gals) of delicious syrup made.
DYI Vacuum Filter
2023 - 170 taps, mostly on lines, 1153 gallons boiled, 130 L (34.34 gals) of delicious syrup made, on a 2x4 divided pan and base stack, 8 pipe, on a block arch that boiled at a rate of 13 gallons per hour.
2024 - made 48 L, December to March, primarily over two fire bowls.