Where's your proof?

I don't need to prove your claims. You need to prove your own claims.

So where's the proof that the towers have a height difference of 36mm due to the curvature of the earth?

Actually the height was not what was different Tom, it was that the tower were not parallel and that the difference in the distance between towers at the top and bottom of the towers was 36mm.

Like this:

The difference in Diagram 1 between A and B would be 36mm (for the bridge). Where as, if it was on a Flat Earth, there would be no difference in the distance as shown in Diagram 2.

The distance can be measured in several ways.

- The easiest would be to use a laser range finder and this uses the time it takes light to travel from the source, to the destination and then get reflected back to the receiver. You could also use an ultrasonic range finder, but it wouldn't work as good.
- Another would be the just use a tape measure.
- You could use triangulation using the edge of one tower as a base line
- And so forth

When building the towers, for the bridge, it would have been necessary to know the size of the gaps between the top and bottom of any two towers so that they had the correct lengths for the Suspension cables. For a bridge this size variations of 36mm would be disastrous. The engineering tolerances for such large constructions is extremely tight. If the cables are too long then too much sway will occur and the bridge will collapse. If the cables are too short, then they won't connect properly (or if forced to they will put too much stress on the towers) and the bridge will collapse.

In certain parts of the bridge, tolerances of this could be accommodated, but for the gaps between the towers, this kind of variation is far too great.

Do you know anything about engineering?