Have you unlocked core wood? You can find it on (some) structures in the meadows pretty early, otherwise there is metric tons of it in your closest black forest. Sounds like you are at the early stages of building. Core wood is heaps stronger than regular wood when you need to do any kind of house framing with beams, you can build taller & wider than you can with regular wood, so probably worth mentioning, might help. (at least until you unlock buildable stone & Iron beams later on). Good luck with your build.

You need the bronze axe for harder wood or cut other trees and hope they break it. Or find a troll to break them. The Meadow area has birch and oak which is fine wood. Hardwood is pine so far that I found. Black Forest has pine but grey dwarves and trolls are a pain at times.

I have flat ground, first floor is blue, second floor green, third floor yellow, roof now is orange/red. I lowered the roof a bit and change angle. Old way was 2 roof at 45 with 1 roof 26 then top. I now have 1 roof at 45 with 2 roof at 26 plus top. Changed a third floor by adding more beams in all directions which I have no issues so far. Strange that 45 degree gave issues while 26 degree held up. Wondering if height was the issue.

Originally posted by Mharr:

A-frames work well because the diagonal wood beams transfer stability up almost as effectively as vertical ones. For an abstract system it's pretty good at pushing you towards historically accurate building shapes.

Now this I agree with. Historically Vikings did not live in huge mansions. I just like building them. More castle I guess then mansion. It is what it is. It is done on purpose and not a bug. AND it does make sense., I still dont like it.. LOL

The building is very fun in this game. I spent many hours not even building as much as testing what I could build.

Originally posted by SilverSpeedy:

I been trying to put roof in on the wooden building. It is 3 wide and the middle turns red then falls apart after a few seconds. I keep trying to reinforce with different beams and still breaks. The rest of the roof has no issues. I did 2 roof 45 degree with 1 roof 26 degree with a 26 degree top. I try to put beams under it from the floor, connect others beams, some are orange while other are red. Cross beams and everything. This should be very strong fame not weak that falls apart. Building bug? I have no stone blocks nor I have it unlocked it.

This may help you a lot.

https://youtu.be/MGnERC_aYRE

Regular wood is really weak. I switched to making all my building frames from core wood and haven't had any structural issues since then for 'normal' buildings. Core wood supports twice as much as regular wood and the log frames look spiffy.

Also use the hoe and some stone to raise the ground if you need more than 1 support beam to reach it. You can shape it into a little pillar with your pickaxe if you want it to look good.

https://steamcommunity.com/sharedfiles/filedetails/?id=2699954361

Here's the current base I'm working on, all bronze age tech so easy and early. You can see it's all supported by core wood with regular wood filling in the walls and floors. I raised the ground where it sticks out way over the water so I only need to use 1 core wood beam to support it. The main structure is elevated to keep it from swamping during storms.

Originally posted by SilverSpeedy:

I been trying to put roof in on the wooden building. It is 3 wide and the middle turns red then falls apart after a few seconds.

I've found that I can only go 2 wide with walls before I need to set a ground support.....3 does stretch it a bit.

I always make a solid 'foundation' first meaning: that they get the blue overlay. Even wooden flooring should pop blue and not just the green. With a strong foundation, I find you can go quite a few units up green until it enters 'yellow/orange' stage, then I completely stop building and support it again.

I also find that stone&iron is really great for beginning a new 'foundation'/blue for further construction. I suggest trying to get to 'stonecutting' as soon as you can, really helps with fortifications. I find the building system really interesting and well thought out, just needs more art/pieces...even with the provided units, some really varied constructions can be achieved. Just follow the 'rulez', lol.....Blue Foundation, Green constructions, keep away from Yellow-->Red overlays. You can get pretty creative with supports/foundations[blue constructions]

It does act strange sometimes: I have an angled beam accent from a X piece at the center of a pass thru. On this angle extension, I have a metal sconce, directly under this is a workbench. I cannot determine what causes the angle beam to become destroyed as well as the sconce. I'll return after some time to find the components sitting next to the bench and the dock?? Thought perhaps a random Dwarf tossing rocks/large ocean swells or something not allowing this construction to stay intact. I can never figure out what is causing it, so I just leave it off??

This has always bugged me. I get the fact that your not gonna have some huge heavy roof unsupported. its gonna fall. But the rule is to defined limiting me. X beams and other methods should allow me to build higher and wider. Solid support beams underneath.

I imagine they did this to keep lag down. But building in this game is good otherwise and very fun. Limiting people 2 a small 2 story structure sux. LOL But I get it. I just dont like it..

A-frames work well because the diagonal wood beams transfer stability up almost as effectively as vertical ones. For an abstract system it's pretty good at pushing you towards historically accurate building shapes.

There's some benefit to having horizontal supports holding a piece from several sides, but in general beams provide no real support to anything above them. It's all about vertical support to the nearest solid ground. You need foundations of the strongest material you have touching the world surface, embedded in it where possible. Iron > Stone > Core Wood > Basic Wood

Note that core wood is confusing to work with. The horizontal beams behave like short, wide sections of wall and have no central snap points.

Are you building near the ground? The parts get more red/less structurally sound the farther off the ground you are. Are you building on top of parts which are on the ground? Is the ground flat under your floor and supporting it? If a floor part is green, it's not on the ground; if it's blue it's on the ground. I think you get greater structural integrity if your walls/supports connect directly down to the ground, not to things suspended above it. But it's hard to tell just from a description!

Originally posted by SilverSpeedy:

I try to put beams under it from the floor, connect others beams, some are orange while other are red. Cross beams and everything. This should be very strong fame not weak that falls apart.

Orange or red means your beams are themselves not adequately supported. (A red structure is already at minimum stability and won't provide any support to anything else.) What's under the floor?

I DEEPLY recommend you watch any of the numerous youtube videos on how building stability works in Valheim. Short answer, it doesn't work like you think it might. Crossbeams don't directly equate to stability. Stability has to do with distance to the ground, straight down, from that piece and the route that takes. The more pieces in that route the less stable things become. Seriously watch a few vids and it'll make some sense, trust me. I had the same question when I first started.