Construction

Construction is a building skill. You build frames, doors, gates, arches and other big parts from planks, blocks and metal. Many places on the map need these parts to be rebuilt. You also get Construction XP every time you hand over materials to rebuild a place.

How to train

Start with Build timber frame at level 1. New activities open as you level up: see the table below.
Tool: Pine mallet (+15% speed, made with Carpentry). Better ones: Iron mallet (+20%), Cobalt mallet (+30%).

Activities

Materials and parts

Level	Activity	Makes	Materials	Sells for
1	Build timber frame	Timber frame	1 × Pine plank, 1 × Fieldstone block, 1 × Copper bar	30
4	Build a door	Door	4 × Pine plank, 12 × Nails, 2 × Hinges	30
6	Build a sandstone arch with mortar	Sandstone arch	1 × Sandstone block, 1 × Mortar, 1 × Tin bar	42
6	Build sandstone arch	Sandstone arch	2 × Sandstone block, 1 × Tin bar	42
8	Build a well-winch	Well-winch	1 × Timber frame, 1 × Rope, 1 × Hinges	35
10	Build a gate	Gate	1 × Timber frame, 4 × Pine plank, 2 × Iron bands	60
12	Build a roof truss	Roof truss	2 × Timber frame, 1 × Pine plank, 8 × Nails	50
12	Build limestone arch	Limestone arch	2 × Limestone block, 1 × Iron bar	67
14	Build a wheel	Wheel	3 × Oak plank, 1 × Iron bands	40
22	Build a bridge span	Bridge span	3 × Timber frame, 2 × Pitch, 2 × Mortar, 2 × Rope	120
30	Build granite arch	Granite arch	2 × Granite block, 1 × Silver bar	117
42	Build marble arch	Marble arch	2 × Marble block, 1 × Gold bar	142
68	Build porphyry arch	Porphyry arch	2 × Porphyry block, 1 × Electrum bar	192
82	Build onyx arch	Onyx arch	2 × Onyx block, 1 × Orichalcum bar	217
95	Build moonstone arch	Moonstone arch	2 × Moonstone block, 1 × Star bar	242

Goods

Level	Activity	Makes	Materials	Sells for
20	Build slate arch	Slate arch	2 × Slate block, 1 × Coal bar	92
55	Build basalt arch	Basalt arch	2 × Basalt block, 1 × Cobalt bar	167

"Sells for" is what one action's items sell for, at the level the activity opens, before bonuses. Every skill uses the same XP table: see Levels and XP.

Mastery

Each of the 17 Construction activities has its own mastery level, from 1 to 99. Every completed action gives that activity mastery XP, and higher mastery makes the activity better (table below).

A quarter of that mastery XP (half once Construction is level 99) also goes into the Construction mastery pool, which holds up to 15,725,000 XP. You can spend pool XP on any Construction activity: 1 pool XP gives 1 mastery XP. See Mastery for the exact numbers.

Each activity's own mastery

Activity mastery	Adds to that activity
10	+5% chance to spare materials (or arrows)
20	+5 points high-quality chance
30	+5% chance to spare materials (or arrows)
40	+5 points high-quality chance
50	+5% chance to spare materials (or arrows)
60	+5 points high-quality chance
70	+5% chance to spare materials (or arrows)
80	+5 points high-quality chance
90	+5% chance to spare materials (or arrows)
99	+10% sell price on the items it makes, +10% chance to spare materials (or arrows)

Pool checkpoints

While the pool is filled to a checkpoint or above, its bonus counts for every Construction activity. If you spend the pool below a checkpoint, that bonus stops until the pool fills up again.

Pool filled	Pool XP	Adds to every activity of the skill
10%	1,572,500	+5% mastery XP
25%	3,931,250	+10% XP
50%	7,862,500	+5% speed
95%	14,938,750	+10% chance to spare materials (or arrows)

Gear for this skill

Plumb line — +8 points high-quality chance
Carter's gloves — +8% speed
Builder's book — +15% XP
Pine mallet — +15% speed
Iron mallet — +20% speed
Cobalt mallet — +30% speed, +1 item per action

Gear only helps while it is equipped. A high-quality piece gives 1.5 times the bonus, rounded down. See also every boost for Construction.

Places that need this skill

You need this level to find and rebuild the place. Some places accept another skill instead.

The flooded mill — level 10 (or Carpentry 12)
The capital — level 15 (or Smithing 20 or Mining 30)
The high beacon — level 30 (or Masonry 45)
The high stoneworks — level 40 (or Masonry 60)
The kings' tomb — level 45 (or Masonry 65)

Story

Build timber frames, stone arches, doors and gates. Rebuilding places on the map trains it too.