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[LostNumber]

I've never tested these before, so I'll ask here.
1. I've heard tell of aqueduct structures? How do I go about building one? Or is there an easier way to get magma over a brook?

2. Can archers shoot over walls? I know they can shoot through fortifications, but I'd rather not have to suffer unwanted fun if they can shoot over walls, too.

My plan, obviously, is to have an outdoor fun zone, totally safe, with water/magma provided via aqueduct.

[cerapa]

1. Floor over the brook.

2.No.

[LostNumber]

Not even from a higher z-level?

[dornbeast]

1. I've heard tell of aqueduct structures? How do I go about building one? Or is there an easier way to get magma over a brook?

2. Can archers shoot over walls? I know they can shoot through fortifications, but I'd rather not have to suffer unwanted fun if they can shoot over walls, too.

My plan, obviously, is to have an outdoor fun zone, totally safe, with water/magma provided via aqueduct.

Aqueducts:  All you really need for this is a floor surrounded by walls.  The easiest thing is to pave the brook, but if you want one which feels traditional, it should be built at least one z-level above ground.

Archers can shoot over walls, if you mean, "they stand at a z-level above where the wall is and plunk bolts into things, and get shot in return when the goblins bring bows."

I advise building fortifications.

[LostNumber]

My idea is not to make a military stronghold, I just want a place to chop trees vomit without having my dwarves wander past my defense mechanisms.

[Albedo]

Archers sort of need a Line of Sight to their targets. Walls block LOS, fortifications don't.

This will not work:

Archer -> Wall -> target

This will work:

Archer ->  Fort'n ->  target

Note that if you have a "raised wall" that your archers are standing on, at some poin the target will get so close under the "shoulder" of that wall that the archer can no longer see them to fire. 

Archer ->  Fort'n 
.................Wall   (safe target)    valid target

The ratio is about 1:1 - you need 1 additional tile of distance for every z-level your archers are higher up.  Usually a moat or other barrier is used to maintain this distance.

Unless you do away with the fortification and have your archers stand on the very edge of the wall - then it works no prob, but they aren't protected.

[zchris13]

Aquaducts are from the 2-D old school boatmurdered style game.

They are gone now.

[Albedo]

? - well, you can still build them. 

If you can't dig a channel, then you build the equivalent one level up - needs a floor and 2 walls to hold the fluid in.  A top is optional. (How hard can it be?)

[LostNumber]

? - well, you can still build them. 

If you can't dig a channel, then you build the equivalent one level up - needs a floor and 2 walls to hold the fluid in.  A top is optional. (How hard can it be?)

Direct square relationship to how far away it is and how long it needs to be.

[Shoku]

The reason for elevated fortifications with archers behind them is the infamous "if they walk up to the fortification they can shoot right back through it just as easily as your marksdwarves have been shooting out."
Up a level and they have to hit that little target from at least one square away and they usually don't have high enough skill to do that very well.

Anyway, if it's all flat terrain then a single height's worth of walls enclosing your outdoor party zone will keep everyone totally safe from archers. If they have any hills around you will either need more levels of walling, a roof (floor tiles,) or walls on the hillsides.

[Jhoosier]

The reason for elevated fortifications with archers behind them is the infamous "if they walk up to the fortification they can shoot right back through it just as easily as your marksdwarves have been shooting out."

Ooh, I wondered about that.  Gonna have to put a channel outside my fortifications (unless that's gonna eat the bolts).

On my current fort, I saw a goblin fire a potshot up a z-level and through the fortification of my tower.  The goblin was several spaces off and I think he was aiming somewhere else.  Fortunately, nobody was hurt, but it can happen.

[Shades]

Ooh, I wondered about that.  Gonna have to put a channel outside my fortifications (unless that's gonna eat the bolts).

I did that and then figured to fill it was water and have a nice moat around my fort. Didn't occur to me that in winter the goblins could walk right up to the windows and massacre my marksmen then charge through the open gateway to slaughter half the civilians too. Thank Armok for deadly high level miners....

Long story short keep the channel empty if you do this. also the bolts will happily fall to the bottom of the channel so a method to get into it works well.

[LostNumber]

? - well, you can still build them. 

If you can't dig a channel, then you build the equivalent one level up - needs a floor and 2 walls to hold the fluid in.  A top is optional. (How hard can it be?)

A TOP IS NOT OPTIONAL. DEFINITELY NOT OPTIONAL.

[Albedo]

why?

Afraid magma will leap out over the edges and attack? (Or dwarves will find a way to do the reverse?)

[zchris13]

why?

Afraid magma will leap out over the edges and attack? (Or dwarves will find a way to do the reverse?)

I think they mean a traditional wet moat, Albedo.  Horrifying as it sounds, I don't think they realized that the same could be accomplished with magma.  Magma doesn't freeze.