I went on R&R with the guys from that place in April 68. Heard first hand what happened up there. You’ll notice the construction of the bunkers being so thick. Rockets were an issue, but the real issue was the 152mm howitzers over in the Co Roc Ridge in Laos. They had close to a mile more range than our 155’s, and the trajectory of the 175’s at the Rockpile didn’t work out well. In a sandbag wall, that 152mm round will probably do four to five feet.
gary
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Corrugated Roof and sides covered dugout .
Apoxie sculpt is still wet ,this can be fit into any trench section or whatever .
That’s all for today .
PS
Under the sandbags ,is just tape for easy removing the the top part (not a tarp)
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Amazing work.
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More great work!
Even though it wasn’t your intent, I might try making a trap from tape. 
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never saw one made that well! The metal culverts we used were about six foot long by four foot wide. Dug a hole and placed the culvert over it. Then took the dirt and filled sand bags. Two layers being about right.
gary
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Look awesome, where can I send funds. My Khe Sanh Marines need a bunker.
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Hi Piet,
Just keeps getting better, an inspiration to us all in attention to detail and reality, …but do you have nightmares about epoxy sandbags, 
.
Cheers, 
,
G
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Adapt and Overcome! 
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Not about epoxy ,but other building materials 
where did you find the metal culverts? I could use at least a dozen or more maybe
gary
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Here is one way to make your own.
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Real easy ,
I bought some from Juweela,
But when i started gently bending them they break !
I tried a hairdryer it didn’t work, i used the mirco wave still no luck, hot water they started to warp in all the wrong directions!!
Gave it al up and went another direction .
So… i rolled out some Apoxie sculpt ''real thin ‘’
Dusted the Juwella corrugated parts with talcum powder
and laid the thinly rolled apoxie sculpt on corrugated parts
and gently pressed down on to the part… let is cure for an hour.
Then gently cut it to shape when that was done i laid the apoxie sculpt on a tube with the desired diameter and let them fully cure… that was it .
An easer way is probably this way, but i hadn’t lead foil thick enough .
Here some i made earlier, Still need to clean and some lightly sanding.
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That a nice tool to have .
According to the website they have many different scales to meet modelers needs.
Piet , simply beautiful !!
I think I know you well enough to say , I wouldn’t want you to turn a labor of love to just a labor .
Yet I think if you go retailer/manufacturer route you could sell a lot of these and more offerings .
I think the marketing of this era would really sell .
These brother are the Piet/YuFan of structures !!!
Like I said , I think I know you and I don’t think you really want to turn your hobby/art/love into a chore , … but you really should share , lol .
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Thanks Brother appreciated it .
If you decide to make these corrugated culvert sections as “stand alone” items, you might want to consider adding some additional details to them.
The type that appears to be the most commonly used by US forces in Vietnam is called a “side flange, nesting, corrugated pipe section.” The side flange type is not so common nowadays, but is still manufactured and used.
Here are a couple of shots of the side flange corrugated pipe during the war. The first shows the flanged edges and the method of construction for use as actual culvert pipes. The second shows the advantage of the nesting method of shippment where a pallet load of the pipe sections can be easily sling loaded. The third shows an example of how these sections were not just used as roofing structure for bunkers, but were also turned on edge and used a revetting for circular shaped fighting positions.
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Interesting detail that would be easy if they are made from lead foil thanks for posting
Now i have to order some lead foil…
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