Threadbolt Rods
Threadbolt rods are produced by the hot rolling process with large pitch helical-thread shaped shoulders. They are the most versatile bars applied in multiple solutions.
These bars were developed exclusively for the support and reinforcement of soil and rock massifs, increasing safety levels on slopes, tunnels and underground and open pit mine galleries, mitigating risks to employees, equipment and the enterprise itself as a whole.
Description
Related products
Mechanical properties
Check the mechanical properties of the standard ASTM A615:
| Mechanical properties | ASTM A615 Grade 100 |
|---|---|
| Fluency Limit, minimum (kgf/mm2) | 70,3 |
| Tensile Strength, minimum (kgf/mm2) | 80,5 |
| Stretching in 200mm, Mín. (%) | 7 |
Technical Characteristics
ASTM A 615 – GRADE 100
| Minimum Mechanical Properties [kgf/mm²] Grade 100 | Loads [tf] | |||||||||||||
| Limit Loads | Work according to standard ABNT NBR 5629:2018 | |||||||||||||
| Threadbolt Rods | Nominal Diameter [mm] | D0 – External Diameter [mm] | Core [mm] (*) | Area [mm²] | Linear Mass (*) [kg/m] | Flow Limit | Breakage Limit | Drain Load | Burst Load | Rehearsal | Permanent | Provisional | Load test | |
| Dimension A | Dimension B | |||||||||||||
| THB 16 (**) | 16 | 19,7 | Perfil Circular | 244,0 | 1,92 | 52,7 | 70,3 | 12,9 | 17,2 | 11,6 | 6,6 | 7,7 | 9,6 | |
| THB 19 | 19 | 20,9 | 17,7 | 17,9 | 276,0 | 2,13 | 70,3 | 80,5 | 19,4 | 22,2 | 17,5 | 10,0 | 11,6 | 14,6 |
| THB 22 | 22 | 24,0 | 21,8 | 21,0 | 390,0 | 3,06 | 70,3 | 80,5 | 27,4 | 31,4 | 24,7 | 14,1 | 16,5 | 20,6 |
| THB 25 | 25 | 26,8 | 24,0 | 23,5 | 475,0 | 3,73 | 70,3 | 80,5 | 33,4 | 38,2 | 30,1 | 17,2 | 20,0 | 25,0 |
| THB 32 | 32 | 37,1 | 32,2 | 31,8 | 804,0 | 6,87 | 70,3 | 80,5 | 56,5 | 64,7 | 50,9 | 29,1 | 33,9 | 42,4 |
| THB 36 | 36 | 38,0 | 34,8 | 31,6 | 998,0 | 7,85 | 70,3 | 80,5 | 70,2 | 80,3 | 63,1 | 36,1 | 42,1 | 52,6 |
(*) Linear mass is for reference only.
| Normal ABNT NBR 5629:2018 | |
|---|---|
| Maximum test load | = 0,90 x flow load |
| Permanent workload | = test load / 1,75 |
| Temporary workload | = test load / 1,50 |
| Load proof or short-term loads | = test load / 1,20 |
Splice Glove
| System | External Diameter D [mm] | L gauge [mm] |
|---|---|---|
| THB 16(*) | 34,92(*) | 100,0 |
| THB 19 | 38,1 | 110,0 |
| THB 22 | 38,1 | 115,0 |
| THB 25 | 48,3 | 145,0 |
| THB 32 | 60,3 | 175,0 |
| THB 36 | 60,3 | 210,0 |
(*) Hex Profile
Anchor Nut
| System | External Diameter D [mm] | Length L [mm] | Key Dimension C [mm] |
|---|---|---|---|
| THB 16(*) | 34,92(*) | 40,0 | 34,9 |
| THB 19 | 38,1 | 55,0 | 36,0 |
| THB 22 | 38,1 | 60,0 | 36,0 |
| THB 25 | 48,3 | 60,0 | 46,0 |
| THB 32 | 60,3 | 90,0 | 56,0 |
| THB 36 | 60,3 | 110,0 | 70,0 |
Concave Anchor Nut
| System | External Diameter [mm] | Height H1 [mm] | Height H2 [mm] | Key Dimension C [mm] | Mass [g] |
|---|---|---|---|---|---|
| THB 16 | 42,0 | 32,0 | 18,0 | 32 | 160 |
| THB 19 | 43,0 | 36,0 | 20,0 | 32 | 180 |
| THB 22 | 48,0 | 54,0 | 38,0 | 38 | 300 |
| THB 25 | 48,0 | 54,0 | 38,0 | 38 | 250 |
| THB 32 | 70,0 | 70,0 | 45,0 | 48 | 520 |
| THB 36 | 100,0 | 100,0 | 65,0 | 67 | 2200 |
Degree Ring
| System | Diameter D [mm] | Angle a [Degree] |
|---|---|---|
| THB 16 | 48,3 | |
| THB 19 | 48,3 | 5°/ 10° / 15° |
| THB 22 | 48,3 | 20° / 25° / 30° |
| THB 25 | 63,5 | 35° / 40° / 45° |
| THB 32 | 63,5 | |
| THB 36 | 96,5 |
Anchoring Plate
| System | Dimensions L[mm] X L [mm] | Thickness and [mm] |
|---|---|---|
| THB 16 | 150 X 150 | 9,5 |
| THB 19 | 150 X 150 | 9,5 |
| THB 22 | 150 X 150 | 9,5 |
| THB 25 | 150 X 150 | 9,5 |
| THB 32 | 150 X 150 | 9,5 |
Concave Anchor Plate
| System | Dimensions L[mm] X L [mm] | Thickness and [mm] |
|---|---|---|
| THB 16 | 150 X 150 | 9,5 |
| THB 19 | 150 X 150 | 9,5 |
| THB 22 | 150 X 150 | 9,5 |
| THB 25 | 150 X 150 | 9,5 |
| THB 32 | 150 X 150 | 9,5 |
