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Guardrail
Prevents derailing of vehicles, driving in the opposite lane, and protects pedestrians.
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Steel median strip
Compared to existing concrete median strips,the outstanding shock absorbing effect makes it better for preventing injury to people involved in a car crash.
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Rock fall safety net
It effectively blocks rocks from falling on the road, so it guarantees the safety of drivers and passengers, and prevents damage tovehicles.
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Rock fall prevention facility
High efficiency in maintenance, limits thedamage from rock falls
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Bridge rail
A 3 level parallel rail is used to prevent vehicles involved in collisions from falling and to encourage vehicles to continue in the proper direction
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Expanded metal Gabion
GABION eco-friendly expanded metal Gabion
Guardrail
Characteristics
- Prevents vehicles from derailing, driving the opposite lane, and protects pedestrians
- Attracts attentionto encourage conscious, more pleasant driving
- Can be installedin areas withdifferent radius of curvature; guardrail is also installed fordrivers’ safety.
PIPE TYPE - Elevation & topview
PIPE TYPE - Detail of guard rail
Steel Median Strip
STEEL MEDIAN BARRIER TYPE - Features
Compared to existing concrete median strips, the outstanding shock absorbing effect makes it better for preventing injury to people involved in a car crash.
- Rock fall barrier and rock fall safety net
- It effectively blocks rocks from falling on the road, so it guarantees the safety of drivers and passengers, and prevents damage tovehicles.
- Open and shut rock fall collapse prevention facility
- High efficiency in maintenance, limits thedamage from rock falls
- Recyclability of refuse materials
STEEL MEDIAN BARRIER (SMB750)
High Standard Guardrail - Features
- In the Thrie-beam guardrail system, the number of bolts fastened into pillars is increased from 1 to 2, and the peak of the middle curve of a total of 3 curve points is made smaller than the peak of the upper and lower curves, so that initial rigidity islessened.
- Shock absorber(waste tire + EPDM rubber) is attached between guardrail and post to double the shock absorbing capacity
Material table
| Product Name | Dimensions | Unit | Quanity | Note |
|---|---|---|---|---|
| Guard Rail | 4330x450x3.2T | EA | 1 | Zinc hot dip galvanization |
| Support | 139.8x4.5Tx2,200 | EA | 1 | Zinc hot dip galvanization |
| L Shape Fixture | 139.8 | EA | 1 | Zinc hot dip galvanization |
| Shock Absorben Plate | 85 X 67 | EA | 2 | Waste Tiles + EPDM Rubber |
| Fixed B/N | 19x230 | EA | 2 | Zinc hot dip galvanization |
| Connected B/N | 16x33 | EA | 12 | Zinc hot dip galvanization |
Rock Fall Safety Net
Features
- Rock fall barrier :effectively preventsrock falls caused by washoutorother weather conditions, thus guaranteeingthe safety of drivers and passengers and preventing vehicle damage
- Rock fall safety net :It can be installed in danger areas for falling rocks such as national highways and motor ways, embankments, sections of road where average driving speed is high, or areas where secondary, andtertiary accidents are anticipated
Rock Fall Prevention Facility
Features
- High maintenance efficiency
- Limits damage from rockfalls in localsurroundings
- Convenient removal of rock-fall build-up using equipment and human strength
- Localized replacement is possible when damaged
- Exterior is beautiful and installation is convenient
Comparison between open and shut rock fall collapse prevention equipment and basic rock fall barriers
| Category | Existing basic rock fall prevention | Open and shut rock fall collapse equipment |
|---|---|---|
| Installation Site | For places with an extended cut slope where rock fall may occur due to heavy rain Places where it can be a direct hazard to the road user Install at the lowest part of the cut slope where rock fall may occur |
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| Energy absorption | The rock fall energy of a relatively small rock fall prevention barrier(50kj) is equivalent to a 0.4 tonstone free falling from a height of 12.5M. |
Effectively designed to absorb rock fall energy. Through test loads, it has proven to be stronger than 58.6kj of rock fall energy |
| Maintenance | If thick layers of sand sediments are built up in the rear, we cut the wire rope and wire net to remove the sand and reinstall it |
The open and shut system is attached to both ends of the fence for convenient removal of rock fall sediments |
| Exterior | Scenery is ruined by standardized products | Depending on the installation site, the number of gated types can be chosen (degree 1 ~ degree 4) and its beautiful form contributes to the road side aesthetics |
| Constructability | Work is not possible during theready-mixed concrete curing period occurring in the process ofconstruction. | A shortened construction timeis possible because ready-mixed concreteis deposited after the entireinstallation of the rock fall collapse prevention facility |
| Economics | Initial investment cost is low, but in the long term, maintenance cost is high. | Initial investment is required, but is cheaper than existing products in terms of maintenance. |
Detailed diagram of open and shut rock fall collapse prevention facility
Bridge Rail
Features
- A 3 level parallel rail is used to prevent vehicles involved in collisions from falling and to encourage vehicles to continue in the proper direction
- A shock absorber is attached tothe lower rail for shock absorption where a crashed vehicle makes first contact
- Maximum consideration for economics and safety
- Outstanding fall prevention due to comprehensive behavior of pillars and rails
- Convenient installation and replacement due to the adoption of a coupling device that prevents the coupling errors of pillars and rails
- Minimizing construction costs due to reduction of weight compared to concrete rails –decrease in floor plate construction moment (by about 7%)
Expanded Metal Gabion
Features (Utility Model Patent case number 0206354)
Eco-friendly and natural form.
By constructing the form with a box filled with natural stones (rubble)and debris,of road and railway, 보광토식옹벽, andNatural erosions ofearth slope surfaces are preventedrock falls are prevented, and the self-purification capacity of water is enhanced when using river face of slope. This is an ecological construction method whichmaintains a natural ecological system because of smooth natural flows of storm water. It is constructed in a way that fits the environment and conditions of the area by cutting along the diagonal line of a diamond on the site.
Outstanding durability and safety.
This product is easy to assemble because it is manufactured with zinc type 5 wire -- hexagonal twisting, welding mesh type, diamond shaped mesh 강판망.
It is economical because the segments of the road and draining system aremaximized without procuringthe lot.
Gabion construction method is conducive to a shorter construction time with lower cost than 보강토R.C 콘크리트옹벽, 호안부럭, 돌붙임, 석축, 전석쌓기시공시보다, winter construction is possible. It is economical because natural stones on the construction site, as well as muck and debris near mines are used. The surface is covered with ready-mixed concrete and permeable cement concrete so it can be used as a walking trail, bicycle road orfarm road. It is economical because it cuts down the negotiation time and money necessary to secure land needed for draining and the road.
Eco-friendly mattress construction method.
stone veneers that are used for sand slopes and streams, or elliptical, mattress type gabioncan be constructed with eco-friendly mattress gabion. If 돌채움 is constructed with equipment, construction time is shortened and cost is reduced, erosion is prevented, and the exterior looks appealing and suitable for vegetation in sand slopes and ecological waters.
Comparison to existing products
| Diamond (expanded metal) | Square (expanded metal) | Square (expanded metal) | |
|---|---|---|---|
| Material | Steel plate | 아연도금 경강철선 | 아연도금 연강철선, PVC 코팅선 |
| Durability | Overall hot dip galvanizing after the completed product is finished. (zinc coating weighingmore than 550g/m2) |
Used galvanized iron wire(type5) Welded area in welded mesh is vulnerable (아연부착량 230g/m2이상) |
Used galvanized iron wire(type5) Twisted area in twisted mesh is vulnerable (아연부착량 230g/m2이상) |
| Road industry area 23 years Rural area 46 years Coastal area 19 years |
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| Safety | 강철판을 일체형으로 다이아몬드 망목형성 강성이 유지되어 구조적 안정성 탁월하여 시공성이 양호함. |
Electricity resistant Galvanizediron hot wire was twisted into hexagonal mesh |
PVC coated wire isvulnerable to heat and ultraviolet rays. |
| Economic feasibility | Structural stability is secured, eco-friendly development is possible, supply price is equivalent to that of existing products. | ||
| Conclusion |
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Detailed diagram of eco- friendly expanded metal gabion
