Sort:  

Yes factor of safety first , lot of test is done to check the durability in designing like shear analysis, maximum load capacity test..etc etc, all calculations are some then weak points will be supported when everything is all secure then manufacturing is done.

Coin Marketplace

STEEM 0.09
TRX 0.32
JST 0.031
BTC 108800.39
ETH 3913.70
USDT 1.00
SBD 0.61