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Seismic Calcs on Pipe Bridge.

Seismic Calcs on Pipe Bridge.

Seismic Calcs on Pipe Bridge.

(OP)
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

 

RE: Seismic Calcs on Pipe Bridge.

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.

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