To simplify rack structure in which loading platforms are arranged between a pair of right and left strut units for reducing cost.

The rack is composed by arranging the loading platform 3 between the pair of right and left strut units 2A and 2B. The loading platform 3 has truss structure composed of a pair of front and rear beams 8a and 8b parallel with a length direction of the loading platform and at least two sub-beams 9 and 10 arranged diagonally in mutually opposite directions for connecting both the beams 8a and 8b. The pair of right and left strut units 2A and 2B are connected by at least two braces 4 which are inclined in mutually opposite directions along a vertical surface on the back side of the loading platform 3.