Seismic Calcs on Pipe Bridge.

[Tinguindin]

Hello;

I am currently working on a pipe bridge that will support a 20" water line. Total weight of combined system is 36kips.

I am working on the seimic part. I would like to know if I can use the ASCE-07 (chapter 15) and consider it as a Nonbuilding Structure.

From Table 15.4-2 Seimic Coefficients for nonbuilding Structures Not Similar to Buildings.

Response Mod. Factor = 1.25
Overstrenght Factor = 2
Deflection Amplification factor = 2.5

Mapped Spectral Response Accelaration: Ss = 2.543 g
S1 = 0.866 g

Spectral Response Coefficient: SDS = 1.695 g
SD1 = 0.866 g

Base Shear : 61 kips ( ASCE-07 12.8-2)




I have attached a preliminary Sketch.

Thanks

 

[Bagman2524]

That seems like a valid application to me. Looks like your usiing the last item in the Table "All other self supporting structures.... I don't see anything other item in the Table that looks like it would apply, so this like the correct one.