How It's Made · SEASON 23

Railway Bridge Ties, Membrane Filters, Hydraulic Post Drivers, Bi-Planes

Episode 4 · 2014-04-24

★ 10.0

How It's Made poster

Season 23Episode 4★ 10.0/10

Documentary

Episode overview

Heavy timbers are cut, drilled and treated for use as railway ties on bridges. Selective membranes are formed and installed in filtration units; hydraulic mechanisms are assembled into machines that drive posts into the ground; and wooden or metal airframes, wings, control surfaces and engines are brought together to build biplanes.

21 minutes

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3. Noise Barrier Walls, Front-Load Washers, Bourbon, Flexible Circuit Boards2014-04-17

4. Railway Bridge Ties, Membrane Filters, Hydraulic Post Drivers, Bi-Planes2014-04-24

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