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DIN 21531-2:1990-07
Arch supports; arches B 21,7 to B 63
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Summary
This standard applies to multi-section support arches for mining and tunneling, made from mining GI-profiles as per DIN 21541 for useful cross-secktions ranging from 21.7 m2 to 63 m2 (cross-sectional sizes B 21.7 to B 63). Dimensions, designations, and materials are specified.
Technical characteristics
| Publisher | Deutsche Institut für Normung e.V. (DIN) |
| Publication Date | 07/01/1990 |
| Page Count | 4 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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