Bar for railroad switch

Bar wooden for railroad switch

• on geometrical parameters and quality of wood – DSTU GOST 8816:2009 " Wooden railroad ties for the switch wideband railway";
• security parameters - GOST 20022.5-93 "Protection of wood. High pressure impregnation by oily protective equipment";
• a protective tool - GOST 2770-74 "Oil coal for wood impregnation".

Technical characteristics of a bar wooden

Wood of coniferous breeds is applied to production of a bar pine, fir-tree

• 1 type - for the main ways
• 2 type - for little used main, reception- dispatch ways and hump yards
• 3 type - for access roads of the industrial enterprises;

The sizes of a bar wooden for railroad switch

Type of bar	Thickness, mm	Width, mm	Length, mm
1 òèï	180	260 ± 20/5	from 3000 to the 5500 with step 250
2 òèï	160	250 ± 20/5	from 3000 to the 5500 with step 250
3 òèï	160	230 ± 20/5	from 3000 to the 5500 with step 250

Bars prepare complete sets (À1, À2, À3, À4, Á1, Á2,) depending on type of rails and mark railroad switches.

The quantity of bars in the complete set makes

Length bars, m	The conditional number Lengths bar	Complete set types
		À1	À2	À3	À4	Á1	Á2	-
		Types of rails
		Ð65	Ð65, Ð50	Ð65		Ð65, Ð50		The cross railroad switches
		Marks of railroad switches
		1/22	1/18	1/11	1/9	1/11	1/9
3,00	1	16	31	16	17	16	17	-
3,25	2	39	16	10	10	8	7	-
3,50	3	21	17	8	8	7	7	19
3,75	4	16	12	7	4	8	5	18
4,00	5	14	11	5	6	4	3	8
4,25	6	12	9	6	5	6	4	8
4,50	7	10	8	7	6	7	7	10
4,75	8	10	9	6	4	5	4	8
5,00	9	11	9	5	4	5	5	8
5,25	10	10	8	6	4	6	4	8
5,50	11	11	7	4	-	3	-	4
In total		170	137	80	68	75	63	91

Volumes of sets of switched  bars, m3

Type of completing bars	Complete set kind
	À1	À2	À3	À4	Á1	Á2	-
1 type	31,62	25,08	14,91	12,11	13,96	11,35	18,11
2 type	27,03	21,44	12,75	10,35	11,93	9,7	15,48
3 type	24,86	19,72	11,73	9,52	10,97	8,92	14,24

Parameters of security of a bar wooden at preservation

Wood protection completely meet the requirements of GOST 20022.0-93"Protection of wood. Security parameters"

Before impregnation humidity no more than 25 %. Humidity of wood is defined in conformity of GOST 20022.14-84 Protection of wood. Definition methods before impregnation humidity

Norms of absorption antiseptics, kg/m3

The name	The minimum	The planned
Pine and cedar bars	79	96
Fur-tree and fir bars	62	69

Norms of depth of impregnation

The name	Depth of impregnation
	On a sapwood, mm	High grade and ripe wood, mm
Pine and cedar bars	not less than 5	not less than 5
Fir-tree, fir and fallacious bars	not less than 5	not less than 2

Average service life

The name	Average service life, years
Bars the wooden impregnated	15-20

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