See, this is the problem with always going with the lowest bidding contractor.
Actually … the fact that any of the upper third of the dome is still standing, despite that gaping hole? Suggests a lot of terrifying things about the aliens’ materials science.
Bet you dollars to donuts something blew OUTWARD, from inside the dome – not the opposite.
Easy to guess who blew. But their motivation is – the secret
But the dome is to keep out a gas, not bullets.
Perhaps its a simple polymer and aluminum frame would work, or a hard plastic frame?
Design weight may be small. But the dome is high and the area is empty. The load of the wind would be enormous. Therefore, the dome must be very strong.
This looks like a What-if question.
I didn’t think of wind. But this is even scarier. The perspective is off. The whole city seems to fit in a dip in the cand, the beginings of a cove.
The city, it’s been SHRUNK!
Yeah; see above. Even 1cm-thick silica aerogel would mass in the “hundreds of millions of kilograms” range.
And I didn’t even go into wind load – I’m not an architect myself, so I wouldn’t have any clue how to show any numbers.
1 cm glass will weigh 25 kg/m^2. Huge sheets of glass will not withstand its weight. But the polymer of the future at the same weight may well survive.
Wind load. If this is the ocean, then at the height of 20m will be close to the load of 150 kg/m^2. And at a height of 100m – 250 kg/m^2. This becomes a problem if the dome as big as it seems.
I guess 1000m diameter dome. I guess the height of 500 m dome (this is not true, but it’s easier to count). The area of the dome 1570750 m^2. Dome weight (without farms) 39269 t. The length of the circumference of 3142 m. The load on the foundation of 12,5 t/m (strange, that’s not a lot).
Wind load on the side view of the dome of about 109600 t. But I’m not a good architect. I know that the load distribution on the dome will be difficult. But I can not say how. There will be a tension zones and the compression zones. Not important what the load will fall on the foundation. It is important the maximum effort will arise in rods farm.
Why am I doing this?
I think you misunderstand.
It doesn’t matter what the dome was supposed to keep out, or not. What matters is, the dome has to support it’s own weight. Domes normally do this by dint of simply being an arch, across any vertical cross-section you could fancy selecting.
Even so, to build a dome whose peak is higher than a rather substantial looking high-rise tower _with radio masts atop it_ …. just there, just to hold itself up, that is an insane level of material strength there. We couldn’t do it today. I doubt we could do it even a hundred years from now. I’m honestly not sure the materials to build such a structure will EVER exist outside of science fiction.
Now factor in that a great big swath of the dome is simply gone. MOST vertical cross-sections of the dome are NO LONGER INTACT ARCHES. That bit directly over the center of the city? It’s only supported on one side. It’s probably been hanging there since the aliens left Earth behind.
We couldn’t do that for 1/10 as long, with a damaged dome 1% the size of that one. Literally, right now, that would be an engineering impossibility.
Thought experiment time: let’s say those panels are made of some sort of Aerogel – but with a closed-porous and hydrophobic surfacing treatment. That means it weighs little more than air itself.
Silica aerogel (Carbon and Graphene aerogels are much too porous, and would let the exterior in far too easily) has amass of 1,99g per cubic meter; if we presuppose a 1cm-thick pane (ludicrously thin, really), that’s about 1,900g per hundred square meters. Air itself weighs 1,200g for the same volume.
Based on the buildings, I’m going to guess at the dome being roughly a half-sphere, 1km in diameter (it’s not, it’s a bit flattened, but let’s keep the back-of-napkin math on the simple side, please!). That gives it a surface area of 1.26×107m^2 – or, 12,600,000,000 square meters.
Exclusive of any braces, struts,or other primary structure that means the panes collectively represent 126,000,000 cubic meters of material. That collectively weighs 239.4 million kilograms. To put that in perspective, a Nimitz class nuclear aircraft carrier has a displacement of roughly 92.2 million kilograms … a bit over one-third the weight of this dome.
An actual dome that size, made of the best and strongest silica aerogel we could manage, would collapse under it’s own weight … and do so long before it was completed as an actual dome.
It certainly wouldn’t leave a panel that must measure at least 300m on a side, dangling in the air, supported only along one edge, for a century or more.
So, like I said: the fact that the majority of the dome is still there at all – beyond, say, the lowest 20% around the perimeter of it – is testament to some Godlike-Amazeballs material strength. Maybe not Niven’s “Scrith” … but certainly closer to it than we can do aught but _dream_ of, ourselves!
Dome’s weight is big, but not monstrous. Hydroelectric dam it is monstrous. It can withstand pressure of cubic kilometers of water. Its length is greater than 2 kilometers.
The dome is difficult to deliver. Until he closed need good struts inside. Once it is closed load very well distributed over the farm. You can then put the glass and he will be even stronger.
But if one is damaged the only one rod at the bottom or in the middle, it is a problem. If the dome formed such a huge hole, which means that there is a rod, which accounts for compression of 2-3 times larger than normal. And there is a rod that has been compressed. And now it will be extended with a force of 2-3 times higher than normal.
Let’s just say, Mindy meant to paint the whole back side of the dome as being intact.
Are Julia Shumway and “Big Jim” Rennie under the dome?
I do not know. But it looks as if the Nameless Hero has got out.
DUUUUUUDDDDDEEEEE!!! I love this! Gorgeous work!
Couldn’t help but draw parallels to the domes in my universe here… snort! Post Apocalypse for the win!
Thank you! :3
I love how this turned out, especially the dome and the water.
Is this … the future of the city wren is in right now? or, another one, that’s already been destroyed? I remember that most of them didn’t survive…
Different location! Those are more of the Herald’s tents.
haha oh good!
Unless things are very different in the future, I don’t think that that hole is supposed to be there.
Also, nice ship/jet/craft/thing.
Ditto on the aircraft!
Now we’re getting somewhere.
Aircraft exceeds the technical level of all that we have seen so far in the 50 years. Perhaps more sophisticated technologies are only Wren and Tilla.
Different locations across the world have different levels of tech, different access to resources and such. :3
Different groups of Herald have different access to technology? Hebe’s squad was equipped very modestly.
This dome doesn’t belong to the Herald. The tents do, and the plane is Gideon’s.
Be it ever so humble there’s no place like dome.
So, have they gotten rid of John Travolta’s character yet? (Battlefield Earth)
Lol! Never saw that movie, heard too many terrible things about it. Although some think it’s so bad it’s awesome.
It wishes it was bad enough to be Sharknado.
It’s certainly no “Attack of the Killer Tomatoes”
Worth the wait. This page is glorious. Pallette, lineart, perspective… all so great. The world you’ve created manages to carry a lot of beauty in it’s bleakness. I can’t wait to know more of the context surrounding the place.
The ship reminds me of some of the art on the covers of Orson Scott Card’s books.
Thank you so much! XD I really tried to up my game this time around, lol.
“Someone go back and get a shitload of duct tape.”
Am I crazy or are those tents in the foreground HUGE?
Yeah, my perspective is a little fucked up. Should I post perfect pages or should I post regularly? Cuz you guys don’t get both.
That’s totally understandable. I didn’t mean to call you out or anything, I was just wondering if I should be taking that “literally” or not. Wouldn’t put it past you to have actual giants in this story.
Lol! Paramilitary giants, that’s pretty terrifying!
Annnnd officially caught up! Darn it. I’m running out of comics. By the way, Lawler is the most adorable character ever and I love him. And Wren, but that might just be because I have a thing for cats. Same for Winter. Telekinesis. Awesome.
So Ashton-guy probably lives in there, huh? Near the sea? Or maybe he did…it doesn’t look like the nicest place to live anymore…
Welcome to the comic! A fan of Lawler, are ye? His army grows ever larger. (ha, good timing considering the next scene!)
This is a brand new location. I probably should have put a caption on there to that effect, make it less confusing. :/ Ah well. Ashton lives in the same city Wren’s in now!
Oh, really? I probably should have figured that out. Oh well. I never claimed to be smart.
Been awhile and damn did i come back to something awesome.