This is a simple project that should only take a couple of hours to complete.
Supplies: You will need 2 - 12' 2x4's (uprights) 2 - 8' 2x3's (rungs) Exterior wood glue 36 - 2-1/2" Deck Screws
Tools: 4 Clamps Measuring Tape Square Pencil Circular Saw Drill with countersink and screw bit Hammer Chisel
Start by clamping two 12' - 2x4's together with top edge and ends flush. Stand them on edge. The rungs are notched into 2x4 upright 1-1/8" so we need to mark out notches. The top and bottom rungs are 8" from ends, place a mark at 8". This is top of upper rung and bottom of lower one. Offset these marks 2-1/2" (the width of 2x3 rungs).
Now measure out for rest of rungs. Lay your tape measure on 8" mark made earlier and measure 16" increments. These marks represent center of intermediate rungs. Offset these marks 1-1/4" on either side.
Using your square, square off marks you have just made down face of 2x4 uprights 1-1/8" deep. Square your marks across top edge of uprights as well.
Now it is time to cut notches. Set depth of your circular saw to 1-1/8". Start by making cheek cuts of notch then proceed to make a series of cuts about a 1/4" apart through rest of notch. Do this for all notches.