Meanings of intersect beams in English

The roof was low, and seemed lower still by heavy intersecting beams, which I might have touched with my lifted hand.

Next came the designs of the steel framework, known as a diagrid because it's made of diagonally intersecting beams, and the lightweight facade.

The net of intersecting beams lay so close together that the passage between was exceedingly narrow and compressed, barely admitting the diver's body.

Viewing through their sensors, he observed survivors clinging to the intersecting beams within the station ring, but now there were only a few of them.