In a 30-foot boat, you will want to strengthen the overall structure with at least four other longitudinal frames running bow to stern.

They were to have incorporated longitudinal frame stringer steel construction, and would have been primarily welded.

Barns of this type were based on a longitudinal frame, with two rows of posts connected by arcade plates.

The design incorporated a number of innovations, including a new longitudinal frame system in the hull, the development of which delayed construction by three to four years.

The tarantass is a four-wheeled horse-drawn vehicle on a long longitudinal frame, reducing road jolting on long-distance travel.

Maintenance drones were inching along the longitudinal frames, inspecting individual struts for fractures, supplementing and refining the data from the sensors, filling in the true status of the black zones.

The longitudinal frames at the sides fit into notches cut into the transverse frames, while the ones near the bottom of the ship are sometimes made continuous between traverse bulkheads.

The new rules adopted in the 1997 annexes to the SOLAS convention focused on problems such as reinforcing bulkheads and the longitudinal frame, more stringent inspections (with a particular focus on corrosion) and routine in-port inspections.