in a preferred embodiment the fastening means comprises expansion anchors well known to those skilled in the art however any suitable fastening means e g screws may be used first and second l shaped rail supporting brackets 16 are affixed one above the other to the upright column 12 as shown to provide supporting means for wooden guard rails not shown a retaining flange 17 spaced apart from the upright column 12 is affixed to the baseplate 14 of the guard rail support 10 in order to receive and secure a kick board not shown in position the rail supporting brackets 16 and the retaining flange 17 have bores 19 formed therein for receiving fasteners to secure wooden guard rails within the rail supporting brackets 16 and the retaining flange 17 an angle brace 20 is affixed between the upright column 12 and the base plate 14 in the manner shown to provide for structural stability of the guard rail support 10 finally a fall protection or safety tie off ring 22 is affixed to the lower end of the upright column 12 and to the base plate 14 preferably the l shaped rail supporting brackets 16 and retaining flange member 17 are dimensioned to accommodate two adjacent overlapping wooden rails which may be secured to each other and within the brackets 16 and retaining.