Hansonn
Structural
- May 19, 2010
- 7
Hi people,
In ASTM F2787-09, the serviceability condition requires that the deflection (change in rise and span) under service loads be limited to 2.5% of the nominal rise and span. I am not familiar with ASTM. Questions:
1. What included in the service loads? What modulus of the arch material will be used with each component of the service loads (long-term creep modulus or short-term modulus)?
2. Is there any similar requirement in AASHTO LRFD (for polypropylene arch)?
Your response is greatly appreciated.
In ASTM F2787-09, the serviceability condition requires that the deflection (change in rise and span) under service loads be limited to 2.5% of the nominal rise and span. I am not familiar with ASTM. Questions:
1. What included in the service loads? What modulus of the arch material will be used with each component of the service loads (long-term creep modulus or short-term modulus)?
2. Is there any similar requirement in AASHTO LRFD (for polypropylene arch)?
Your response is greatly appreciated.
