#arch bridge

[pointandshooter]

Genesse railway arch bridge, New York

photo: David Castenson

[huariqueje]

Gaardbrug , Blue Hour - Willem van der Hofstede , 2023.

Dutch , b. 1957 -

Oil on canvas , 80 x 80 cm.

[malioli]

What Holds the Silence

Beneath the bridge there is no hurry.

Concrete curves remember what water forgets. Light stays a little longer, and silence learns how to stand.

Some structures are not built to impress, but to last.

[famousinuniverse]

Le Pont Neuf, Paris, France: The Pont Neuf is the oldest standing bridge across the river Seine in Paris, France. It stands by the western point of the Île de la Cité, the island in the middle of the river that was, between 250 and 225 BC, the birthplace of Paris, then known as Lutetia and, during the medieval period, the heart of the city. Wikipedia

[architectureforsuicides]

EO (Jerzy Skolimowski, 2022) Lake Bystrzyckie Dam Bridge Lubachów, Lower Silesian Voivodeship (Poland) Bridge over Lake Bystrzyckie Type: arch bridge.

[wgm-beautiful-world]

Pont Valentré - Arch bridge in Cahors, FRANCE

[autistobrat]

Infodump of the day bc why not

when you hold your necklace loose

and flip it so it's like the picture on the right

it is the same with the arc on the bridge

When you hold a necklace loosely, it naturally hangs into a catenary curve. When you flip it vertically, you get the same shape as a suspension bridge arch, or even better, a catenary arch.

A bit detailed explanation incoming:

A hanging chain like a necklace forms a catenary, from the Latin catena, that means chain.

Mathematically, this curve is:

y = a cosh (x/a)

where cosh is the hyperbolic cosine.

When you flip the necklace vertically, you get the inverted catenary.

And it is the shape that perfectly distributes compressive forces.

In bridges or arches, that is the best structure it can have.

If you want a self-supporting arch, it should be in the shape of an inverted catenary, because it makes all forces compressive.

[supplyside]

heavy duty