Prior to 1966, most aircraft were parked side by side on an open ramp. After the VC airmailed some greeting cards to some of the air bases in 1966, revetments started going up.
Revetments were three sided, built with corrugated steel. The height varied from around 10 to 12 feet high and 24 to 48 inches thick. They were filled with sand as blast protection. The back wall was dirty with exhaust soot as well as the rear part of the revetment
Every fourth or fifth revetment had a conex (a shipping container) used for storage of hyd fluid, oil, etc. Along the wall were spare drop tanks, wheel and tires, or common use items.
Revetments varied in size. Some were single acft revetments and some double acft revetments. The single revetment would have a yellow 10 inch wide line painted in the center for use as a guide for the nose gear track. Where the nose gear was to be parked would be a yellow square. On double revetments there would be two yellow lines for parking of the assigned aircraft, plus a larger 14 inch wide yellow line in the center for parking of larger aircraft.
I have seen the corrugated steel in 1/72 scale only. In 1/48 scale you would have to scratch build it. Several years ago I had plans to build a revetment for use with my 1/48 scale F-4D, but gave up on it when I discovered I would be spending more time building the revetment than time building the aircraft.
Berny
Phormer Phantom Phixer 
On the bench
TF-102A Delta Dagger, 32nd FIS, 54-1370, 1/48 scale. Monogram Pro Modeler with C&H conversion.
Revell F-4E Phantom II 33rd TFW, 58th TFS, 69-260, 1/32 scale.
Tamiya F-4D Phantom II, 13th TFS, 66-8711, 1/32 scale. F-4 Phantom Group Build.