Abstract: Provided is a construction support, a length of which can be precisely and easily adjusted to a floor-to-floor height between upper and lower floor slabs, capable of supporting the load of the upper floor slab in a more stable and firm manner and performing dismantlement in a more convenient manner. The construction support includes a first pipe, a second pipe, an inner stopper, an outer stopper, and an outer cap.
Abstract: A pressure bulkhead for an aerospace fuselage includes a bulkhead main portion having an approximately flat shape in unloaded state; and a frame supporting and connecting said bulkhead main portion to the fuselage; wherein said bulkhead main portion includes an airtight structure having a reticular component.