There are a bunch on the DLS if you filter for grain bin and grain silo. THe first two are built-in to my TRS19 platinum, then here are some by Dave Snow. The 30ft looks like your picture:
<kuid2:50567:27001:1> MFM grain bin
<kuid2:56603:21021:1> New grain bin
<kuid:101046:100321> Attachment Pipes for Grain Silos DES
<kuid:101046:100316> Grain Silo, 30 Ft. High DES
<kuid:101046:100317> Grain Silo, 52 Ft. High DES
<kuid:101046:100318> Grain Silo, 72 Ft. High DES
<kuid:101046:100975> Grain Silo, GSI 2 DES
<kuid:101046:100976> Grain Silo, GSI 3 DES
<kuid:101046:100730> Grain Silo, GSI DES