A method for constructing a picket fence section includes the steps of: inserting a plurality of spring clips into a hollow interior of each of a plurality of hollow pickets. Each spring clip has a first leg and an opposing second leg that includes a locking protrusion that extends outwardly from the second leg. Each spring clip is disposed within the hollow interior of one hollow picket such that locking protrusion extends through one corresponding first hole formed in the one hollow picket. The plurality of pickets are coupled to a plurality of rails with each rail including a longitudinal locking channel and each picket being coupled to the plurality of rails by inserting the locking protrusions into the longitudinal locking channels of the corresponding rails, thereby coupling the hollow pickets to the corresponding rails.