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post-tensioned pvc duct wobble coefficien
post-tensioned pvc duct wobble coefficient
i am trying to determine what wobble and friction coefficients i should be using for a 2" pvc duct. does anyone know where i can find this information? find a job or post a job opening 16th edition of aashto lfd section 9.16. |
| 所有的时间均为北京时间。 现在的时间是 06:16 PM. |