A strongback is a
beam
Beam may refer to:
Streams of particles or energy
*Light beam, or beam of light, a directional projection of light energy
**Laser beam
*Particle beam, a stream of charged or neutral particles
**Charged particle beam, a spatially localized grou ...
or
girder which acts as a secondary support member to existing structure. A strongback in a staircase is usually ordinary two-by
dimensional lumber attached to the staircase stringers to stiffen the assembly. In
shipbuilding, a strongback, known as a
waler is oriented lengthwise along a ship to brace across several frames to keep the frames square and plumb.
In
formwork strongbacks (typically vertical) reinforce typically horizontal walers to provide additional support against hydrostatic pressure during concrete pours.
Some rockets like the
Antares (rocket)
Development
The NASA COTS award was for and Orbital Sciences expected to invest an additional $150 million, split between $130 million for the booster and $20 million for the spacecraft. A Commercial Resupply Service contract of $1.9 bil ...
, the
Falcon 9 and the
Falcon Heavy use a strongback to restrain the rocket prior to launch. This structure reclines several degrees away from the rocket to clear the launch, either at the moment of launch or in some case a few minutes before.
Building materials
Construction
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