Guard rail assembly

A guard rail assembly for mounting a guard bar having a vertical body element, a guard face which extends laterally from said body element and a horizontal foot which extends laterally from said body element comprising:

• a guard rail plate;
• a support bracket affixed to said guard rail plate having a front shelf adapted to mount a guard bar, a horizontal hook support, a front surface which faces said guard bar, a rear surface which faces away from said guard bar and a rear shelf adapted to receive a support block;
• a hook having a front end adapted to engage one of a lower horizontal foot and a vertical front surface of the guard bar, a bottom surface adapted to engage said horizontal hook support and a fastener receptacle at the rear end thereof;
• a support block having a bottom surface adapted to engage said rear shelf, a first vertical surface adapted to engage a body portion of an elastic fastener, a second vertical surface adapted to engage a toe end of said fastener and a rear surface which faces said rear surface of said support bracket;
• and
• the elastic fastener having a first end adapted to be received in said fastener receptacle of said hook, a second body portion adapted to contact said first vertical surface and said toe end adapted to contact said second vertical surface of said support block to simultaneously draw said hook and said guard bar toward said front surface of said support bracket.