Invention of precast pipe in Canada in the year 1920
It has capacity to take load of 21300kg , but as testing mechanism was not developed , they tested like this. To give confidence on strength of pipe . The inventor sat inside the pipe Public load test in Canada, 1920 The test: The inventor conducted a public demonstration to showcase the strength of the new precast concrete pipe. The setup: The pipe was placed on the ground, and a massive weight was built up by stacking heavy sandbags and having several men sit on top. The result: The pipe, capable of withstanding up to 23 tons of pressure, held firm without breaking. The inventor sat inside the pipe throughout the test to show his complete confidence in its durability. The impact: This demonstration was a pivotal moment that helped establish precast concrete pipes as a reliable and strong material for modern water and sewage systems. source: Dr.Abdelhakim Ismail Amer