PURPOSE
verification and calibration of measuring instruments for construction purposes.
FIELD OF APPLICATION
Metrological support of construction
Measure code: МБ1, МБ2, МБ3, МБ4
Strength quality of concrete: В15, В30
Overall dimensions: 50×500×200 mm, 200×500×600 mm
SPHERES OF APPLICATION
metrological support of construction industry.
| Nominal value of thickness of concrete measures MB3, MB4, mm | 200
500 600 |
| Permissible deviations of the thickness of concrete measures MB3, MB4 | ± 2 |
| Permissible deviations of the thickness of concrete measures MB3, MB4 from the nominal value, mm
|
± 3
± 5 ± 6 |
| Deviation from the perpendicularity of adjacent faces,
not more than, mm |
3; 5; 6; |
| Deviations from flatness of working surfaces, not more than, mm | 2 |
| Geometric parameters of artificial flaws of concrete measures MB3, MB4 | 2 |
| – permissible deviation of diameter of holes, mm | 20 |
| – distance from the end surface of B measure to the center of the hole № 1, mm | ±2 |
| – permissible deviation of the distance from the end surface of B measure to the center of the hole № 1, mm | 50 |
| – distance from end surface of В measure to the center of hole № 1, mm | ±2 |
| – permissible deviation of the distance from the end surface of B measure to the center of the hole № 1, mm | 250 |
| – distance from the end surface of G measure to the center of the hole № 1, mm | ±2 |
| – permissible deviation of the distance from the end surface of G measure to the center of the hole № 1, mm | 450 |
| – distance from end surface of B measure to center of hole № 2, mm | ±2 |
| – permissible distance from end surface of B measure to center of hole № 2, mm | 150 |
| – distance from end surface of G measure to center of hole № 2 mm | ±2 |
| – distance from the end surface of G measure to the center of the hole № 2, mm | 300 |
