These "C" pieces had holes drilled in the ends for 1/4" carriage bolts
that will extend though the wooden grips.
As shown in Drawing 2, mount the plywood seat to the bottom of the bucket with the 3/8" carriage bolt
, 11 washers and a 3/8" nut.
Place the purlin pipes on the inside of the hoops, secured with the smooth heads of 1/4-inch-diameter-by-4-inch carriage bolts
Place the purlin pipes on the inside of the hoops, secured with the smooth heads of quarter-inch-diameter-by-4-inch carriage bolts
8 screws in each brace-to-leg joint and two 3-inch carriage bolts
, washers and nuts in each short skirt-to-leg joint.
This draft slide is held in place by six carriage bolts
With the waste valve tension bolt completely loose and the carriage bolt
stop completely up out of the way, let go of the waste valve spring which may or may not open on its own.
The front legs and back support are held to the back leg-seat support with galvanized carriage bolts
Position the remaining pair of bike hooks just high enough to get your bikes off the floor, and bolt them in place using 6" carriage bolts
and putting the spacers (E) between the uprights.
These screw-heads will be hidden by the carriage bolt
Drill through the apron into the leg and then, in order, insert the carriage bolt
, a washer, the leg, another washer and the nut.
My main principle for achieving this is using reverted 10x24 carriage bolts
and a thin hi-carbon, channel-shaped 3/64" steel plate.