Cross Beams

Murus Gallicus
... The distinctive features are earth or rubble fill transverse cross beams at approximately 2 ft (60 cm) intervals longitudinal timbers laid on the cross beams and attached with mortice joints, nails, or iron ... Straight beams, connected lengthwise and two feet distant from each other at equal intervals, are placed together on the ground these are morticed on the inside, and covered with plenty of earth ... the same interval may be observed, and that the beams may not touch one another, but equal spaces intervening, each row of beams is kept firmly in its place by a row of stones ...

Traction Power Network - Routing of Traction Current Lines
... In this case, the traction current line is laid on special cross beams of the overhead wire pylons above the overhead line ... Because overhead line pylons possess a smaller cross section than traction current masts, these cross beams have to be quite narrow, so the arrangement of four conductor cables ... for both driving directions are equipped with cross beams for the traction current system (two conductor cables) ...