Bridges

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A bridge allows for the connection of two land-masses, or even between a house and land or even house to house. A bridge, once complete, will act like any standard terrain, allowing for the crossing of animals, players and land vehicles. A bridge can also be made inside caves and can also be paved (Excluding rope bridges or wooden bridges)

Survey

Survey will give you information on where the other character is standing regarding distance, direction and height difference.

To survey for a bridge two characters are needed. One character must carry a range pole, the other a dioptra. The lowest quality of the two items determines how long a bridge is that you can survey.'

The character with the range pole does not have to do much besides holding the range pole. To do this activate the range pole, click the ground and select Hold from the menu. When the action timer starts face the character with the dioptra.

The character with the dioptra will do the actual survey. Activate the dioptra, right click the player holding the range pole and select Survey from the menu.

The planning process will print messages in the event log

You carefully place the dioptra on its tripod in front of you.
You make sure the dioptra is level.
You point the dioptra at <other player>.
You line up the dioptra with <other player>.
You read the graduations on the range pole and work out the height difference.
<other player> is <x> tiles <direction> of you. Also you appear to be <x> dirt higher than <other player>.
You stop surveying.
You pack up the dioptra.

Building

To plan a bridge two characters are needed. One character must carry a range pole, the other a dioptra.

The character with the range pole does not have to do much besides holding the range pole. To do this activate the range pole, click the ground and select Hold from the menu. When the action timer starts face the character with the dioptra.

The character with the dioptra will do the actuall bridge planning. Activate the dioptra, right click the player holding the range pole and select Plan bridge from the menu. Standing right in front of the other character will create a 1 tile wide bridge. Standing at an offset will create bridges multiple tiles wide.

The planning process will print messages in the event log

You carefully place the dioptra on its tripod in front of you.
looks like bridge would be <'width'x'length'> (East-West)
The tile border to your <direction> is level
You make sure the dioptra is level.
You point the dioptra at <other player>.
You wave at <other player>.
You line up the dioptra with <other player>.
You read the graduations on the range pole and work out the height difference.
The tile border to your helpers <direction> is level
You check the heights of the plan ends.
<Height difference>.
You work out the orientation and width for the bridge.
You check for clearance between the bridge ends.
You check for protruding foliage.
You check for nearby cave entrances and any lava.
You check for any items in the way.
You check that you have permissions to build the bridge.
You check for any bridges that may interfere with this bridge.
You check there would be no buildings under this bridge.
You work out the styles of bridges that would fit.
You start working out the bridge components required.
Planned bridge area is <x> tiles long and <y> tile wide.
(23:ESabFFFFFFFFFFFFFFFBASE)
You stop surveying.
You pack up the dioptra.

When all requirements are met you are presented with list of possible bridges.

Bridge Choices.png

The selection depends on planned width, length, height difference and clearance below the planned bridge.

If you have choosen a flat bridge that is longer than 5 tiles then you have the possibility to change the schematic of your bridge plan.

When you have choosen a type of bridge you can name the planned bridge and select the steepness of the bridge if you've choosen an arched bridge.

Bridge Name Steepness.png

After clicking Finalize a wooden frame for the bridge is constructed.

For each tile of the bridge a bridge segment has to be completed in multiple stages. Those are 'abutments' for the out segments, 'bracing' and 'floating' for stone bridges and 'crown' for rope and wood bridges.

Until the bridge has been completed no other bridge can be started by the character.

Bridge Warnings and Possible Solutions

Your end of the bridge is too close to the water level!

  • Both ends of the bridge need to be at water level or higher.


"The quality of the dioptra makes it too hard to work out the distance." or "You can't read the graduations on the range pole at this distance".

  • Improve both items. Note that the lowest QL of the two will determine the max length of bridge you can plan.


You notice that there is not enough clearance for a bridge to be built here.

  • Remove trees, houses, fences at both end tiles where the bridge should have enough drop off.
  • For bridges from a building, all walls under the bridge must be a solid wall type. Arched, windowed, and doors will not provide enough support.


There are some terrains nearby

  • A cave entrance is one factor. Make sure to build the bridge at least 2 tiles away from the opening.


The (East) tile border in front of you must be level.

  • Level the tile borders where the bridge will connect.


Some terrain is in the way!

  • Possible solution: lower any tiles that height-wise are near the span of the bridge.


You notice that the west bridge end does not butt all to same building all way along.

  • Possible solution: In the diagram below try standing on the letter B for both planners.
  +-----+-----+-----+
  |A   B|     |     |
  |  North Building |
  |C   D|     |     |
  +-----+-----+-----+
W |     |     |     | E
e |     |     |     | a
s |     |     |     | s
t +-----+-----+-----+ t
  |     |     |D   C|
  |  South Building |
  |     |     |B   A|
  +-----+-----+-----+

Skill Requirements

Here is a table of the estimated required skill to plan bridges (by length and material). The person holding the dioptra requires this skill. These numbers are rough, whole-number estimates. You may require slightly more skill in practice.

Required skill by length (tiles) and material
Type/Length 5 tiles 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 Skill used
Wood 10 23 29 34 38 41 44 47 50 52 55 57 59 62 64 66 68 70 72 74 76 77 79 81 83 85 86 88 90 92 93 95 97 99 Carpentry
Rope 10 23 29 34 38 41 44 47 50 52 55 57 59 62 64 66 68 70 72 74 76 77 79 81 83 85 86 88 90 92 93 95 97 99 Ropemaking
Brick 30 40 45 48 51 54 56 59 61 63 65 66 68 70 72 73 75 76 78 79 81 82 84 85 86 88 89 90 92 93 95 96 97 99 Masonry
Marble 40 49 53 56 58 60 63 64 66 68 70 71 73 74 75 77 78 79 81 82 83 85 86 87 88 89 90 92 93 94 95 96 97 99 Masonry
Arched Brick 50 57 60 63 65 67 69 70 72 73 74 76 77 78 79 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 Masonry
Arched Marble 60 66 68 70 72 73 75 76 77 78 79 80 81 82 83 84 85 86 87 88 88 89 90 91 92 92 93 94 95 95 96 97 98 99 Masonry

Note to build any bridge section, the skill requirement is:

Required skill by material
Type Skill
Wood 10 Carpentry
Rope 10 Ropemaking
Brick 30 Masonry
Marble 40 Masonry
Arched Brick 30 Masonry
Arched Marble 40 Masonry

When making the Rope Bridge, how much they sag is based on your character strength with options ranging from 3% to 12% sag.

Rope Bridge sag (3%-12%)
Body Strength Sag %
1 12
10 11
20 10
30 9
40 8
50 7
60 6
70 5
80 4
90 3

Notes

  • Some Bridge info may be found in the week 43 news post here: http://forum.wurmonline.com/index.php?/topic/112518-news-update-work-and-progress-week-43/
  • Bridge material calculator located here: http://forum.wurmonline.com/index.php?/topic/122044-bridge-material-calc/
  • The first level of a house is calculated at 33 dirt. Each additional level adds 30 dirt.
  • Brick/Marble bridges require solid walls directly below, for at least two stories of the building. Example: 3-story house can have a door on the first floor, but must have solid walls for the next two floors on the side with a connecting bridge.
  • Any bridges connected directly to a structure will disappear with the structure. Bridges connecting to the ground in front of a structure will remain.
  • A bridge must be two-lane, part of an existing highway, and not connected to any structures in order to be considered part of a highway.
  • Bridges will only begin to decay after a week of no use.
  • Modifying the terrain after planning a bridge will require re-planning the bridge.
  • You can dig under bridges, with the exception of at the ends or next to supports.
  • Bridges cannot be built over a settlement token.
  • Building Tip: Building 2 or more tile wide bridges can be difficult to plan. As the diagram shows below you must offset your two characters (the A and the B in the diagram) by how many tiles wide you want the bridge to be and make the two characters face each other.
 +-----+-----+
 |A    |     |
 |     |     |
 |     |     |
 +-----+-----+
 |     |     | 
 |     |     | 
 |     |     | 
 +-----+-----+ 
 |     |     |
 |     |     |
 |     |    B|
 +-----+-----+

See also