the beam end spacer 140 is slightly recessed in elevation from the flat bottom section of the i beam 110 a coiled spring 120 is disposed between a beam end slider spacer 150 secured into position by a rivet 130 and the beam end locking slider 114 the coiled spring is advantageously bounded on the sides by i beam 110 fig2 a is a side view of the improved decking beam end piece in a partially mounted position fig2 b is a side view of the improved decking beam end piece with the slider in the depressed position in accordance with one embodiment of the present invention referring to fig1 2 a and 2 b to attach the decking beam end piece to the track 210 attached to a wall 200 the slider pin 122 is pushed in the axial direction as indicated in the arrows 116 to move the spring loaded beam end locking slider 114 away from the wall 200 once the beam end locking slider has been depressed and the receiving slot 160 has been placed into the bottom of the track 210 the i beam 110 can be brought to a substantially horizontal direction as shown in fig2 b and the slider pin 122 can be released the coiled spring 120 causes the beam end locking slider 114 to move in the direction towards the wall 200.