hold each picket 18 vertically and firmly in place at top and bottom note that there is no welding between the pickets 18 and the top bar 12 and the bottom bar 14 except the outermost end pickets and the spacer plugs 22 spacer bar flange 22 a engages tabs 12 b and wall segment 12 cc that acts as a track to slide but retains and interlocks spacer bar 22 in place in inner channel 12 d the method of assembling the railing 10 without having to weld the pickets 18 to the top and bottom bars 12 and 14 while still maintaining the pickets 18 spaced apart rigidly in an integral unit greatly increases strength and reduces the cost of the manufacture of the railing while maintaining a rigid structure the structural integrity of the railing and safety as a guard and barrier is not sacrificed in its construction the perpendicular end faces of the pickets engage the top and bottom bar channel walls 12 cc while the perpendicular end faces 22 a of spacer plugs 22 engage the sides of pickets 18 firmly holding all of the pieces in place fig8 a and 8 b show an alternate embodiment of the invention the railing 100 as shown in fig8 a is mounted on an earth incline relative to gravity and a plumb line such as a hill that may have an angle alpha relative to a flat perpendicular to a plumb line area in this case the pickets 180 are mounted plumb vertically and parallel to the plumb.