Horse Drinking Pool

Horse Drinking
Requirements	Stable Level 20 Rally Point Level 10 Romans only
Required For	None

Prerequisites: Stable level 20, Rally Point level 10, Tribe: Romans, version 3.5 or higher.

It is also often referred to as "Horse Drinking Trough", or HDT for short.

The horse drinking trough of the Romans decreases the training time of cavalry and the upkeep of these troops as well.

The Horse Drinking Trough in detail:

- Accelerates the production time of cavalry units by 1% per level.

- At different levels the HDT lowers the crop consumption of all Roman cavalry units that are stationed within that village.

- Equites Legati consume one less crop at level 10.

- Equites Imperatoris consume one less crop at level 15.

- Equites Caesaris consume one less crop at level 20.

- The maximum level the Horse Drinking Trough can be upgraded to is 20.

Building Costs, Upkeep, and Culture Points

Level							Culture Points
1	780	420	660	540	2400	5	4
2	1000	540	845	690	3075	3	4
3	1280	690	1080	885	3935	3	5
4	1635	880	1385	1130	5030	3	6
5	2095	1125	1770	1450	6440	3	7
6	2680	1445	2270	1855	8250	3	9
7	3430	1845	2905	2375	10555	3	11
8	4390	2365	3715	3040	13510	3	13
9	5620	3025	4755	3890	17290	3	15
10	7195	3875	6085	4980	22135	3	19
11	9210	4960	7790	6375	28335	4	22
12	11785	6345	9975	8160	36265	4	27
13	15085	8125	12765	10445	46420	4	32
14	19310	10400	16340	13370	59420	4	39
15	24720	13310	20915	17115	76060	4	46
16	31640	17035	26775	21905	97355	4	55
17	40500	21810	34270	28040	124620	4	67
18	51840	27915	43865	35890	159510	4	80
19	66355	35730	56145	45940	204170	4	96
20	84935	45735	71870	58800	261340	4	115
Total	385485	207575	326180	266875	1186115	72	115

Building Times for Main Building Levels 1-10

lvl	MB 1	MB 2	MB 3	MB 4	MB 5	MB 6	MB 7	MB 8	MB 9	MB 10
1	0:36:40	0:35:20	0:34:00	0:32:50	0:31:40					0:26:20
2	0:52:30	0:50:40	0:48:50	0:47:00
3	1:11:00	1:08:20	1:06:00	1:03:30
4	1:32:20	1:29:00	1:25:50	1:22:40
5	1:57:00	1:52:50	1:48:50	1:44:50
6	2:25:50	2:20:30	2:15:30	2:10:40
7	3.45.50
8
9
10
11
12									5:31:50
13
14
15
16
17
18
19
20
Sum

Building Times for Main Building Levels 11-20

lvl	MB 11	MB 12	MB 13	MB 14	MB 15	MB 16	MB 17	MB 18	MB 19	MB 20
1	0:25:20		0:23:40							0:18:20
2			0:33:50							0:26:10
3			0:45:40							0:35:20
4			0:59:30							0:46:00
5			1:15:20							0:58:20
6								1:18:10		1:12:40
7								1:36:00		1:29:10
8
9
10
11					3:44:30					3:06:50
12										3:41:40
13										4:22:10
14										5:09:10
15
16										7:06:40
17										8:20:00
18					11:42:40
19
20										13:17:50
Sum

Troop Build Times

Roman Troops

Troop	Horse Drinking Pool Level (Stable Level 20)
	1	2	3	4	5	6	7	8	9	10
Equites Legati	0:03:02	0:03:00	0:02:58	0:02:56	0:02:55	0:02:53	0:02:51	0:02:49	0:02:47	0:02:45
Equites Imperatoris	0:05:53	0:05:49	0:05:46	0:05:42	0:05:39	0:05:35	0:05:32	0:05:28	0:05:25	0:05:21
Equites Caesaris	0:07:51	0:07:46	0:07:41	0:07:36	0:07:32	0:07:27	0:07:22	0:07:17	0:07:13	0:07:08

Troop	Horse Drinking Pool Level (Stable Level 20)
	11	12	13	14	15	16	17	18	19	20
Equites Legati	0:02:44	0:02:42	0:02:40		0:02:36	0:02:34		0:02:31	0:02:29	0:02:27
Equites Imperatoris	0:05:17	0:05:14	0:05:10		0:05:03	0:05:00		0:04:52	0:04:49	0:04:45
Equites Caesaris	0:07:03	0:06:58	0:06:54		0:06:44			0:06:30	0:06:25	0:06:20

Also look here for more details:

http://www.travianhint.com/travian-help-horse-drinking-trough/