Impregnated wooden cross ties completely correspond to GOST requirements:
-
on geometrical parameters and quality of wood - DSTU GOST 78-2009 “Wooden railroad ties for a wideband railway”;
-
security parameters - GOST 20022.5-93 "Protection of wood. Under pressure impregnation by oily protective equipment";
-
protective tool - GOST 2770-74 "Oil coal for wood impregnation".
Technical characteristics of a cross tie wooden
Wood of coniferous breeds is applied to production of cross ties pine, fir-tree.
- 1 type - for the main ways;
- 2 type - for station and access roads.
The sizes of cross ties
| Cross tie type |
Thickness, mm |
Width, mm |
Length, mm |
Volume, ì3 |
| 1 type |
180±5 |
250 |
2750±20 |
0,1237 |
| 2 type |
160± |
230 |
275020±20 |
0,1012 |
Parameters of security of a cross tie wooden
Wood protection completely meet the requirements of GOST 20022.0-93"Protection of wood. Security parameters"
Preimpregnation humidity of a cross tie no more than 25 %. Humidity of wood is defined in conformity of GOST 20022.14-84 Protection of wood. Definition methods preimpregnation humidity.
Norms of absorption antiseptics, kg/m3
| The name |
Minimum |
Planned |
| Pine and cedar cross ties |
79 |
96 |
| Fur-tree and fir cross ties |
62 |
69 |
Norms of depth of impregnation
| The name
| Depth of impregnation |
| On a sapwood, mm |
High gade and ripe wood, mm |
| Pine and cedar cross ties |
not less than 5 |
not less than 5 |
| Fur-tree, fir and fallacious cross ties |
not less than 5 |
not less than 2 |
Average service life:
| The name |
Average service life, years |
| Cross ties impregnated wooden |
15-20 |
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