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<br />.' <br /> <br />-' <br /> <br />" <br /> <br />-' <br /> <br />e <br /> <br />Foundation: <br /> <br />Due to the lack of information regarding the <br />existing foundations for the anchors and tower <br />basel we are not able to comment on their capacity <br />at this time. Further subgrade inspection is <br />required to determine their capacity. It is <br />the tower owners option and responsibility to <br />complete this subgrade inspection. <br /> <br />t:omments <br /> <br />The 700' Rohn 80 guyed tower located at Arden Hills, MN does <br />not meet the specifications of TIA/EIA-222-F considering 80 <br />mph wind and 1/2" ice with reduction allowed. This is based <br />on all information as supplied to EEl being correct and <br />current. If tower loading is changed or altered in any way, <br />we SUggest an additional analysis be completed. <br /> <br />Some of the stress rations outlined in this report are large <br />enoUgh that permanent deformation to some of the tower <br />members could occur if the analysis conditions were encoun- ~ <br />teredo Due to the large degree of overstressing we feel ,.., <br />modifications are not feasible nor recommended to accommo- <br />dii.f'll the ice loading. <br /> <br />It is our opinion that if the subject tower must have ice <br />included in the analysis, we suggest the tower ei,ther, be <br />replaced of shortened to a height where it can safety sup- <br />port the antenna loading and have ice included. <br /> <br />~ gQ recommend !bAt ~ tower owner excavate adiacent ~ <br />1b& existino anchor shafts 1Q insoect fQX excessive rust. <br />pleas~ ~ ~ shafts should ~ insoectedAll 1b& ~ ~ <br />1M RPint ~ 11. enters ~ concrete. Caution ~ ~ <br />disturb ~ shaft Hi1h mechanical eouioment ~ ~ A <br />~ ~ would ~ 12 reiterate ~ imoortance ~ <br />, shafts should ~ ~ first ~ Ql concern before ADY 21 <br />~odifications ~ comoleted QL ~ oroDosed antennas &An <br />installed. <br /> <br />~ <br />1hil <br />1M <br />~ <br /> <br />There are some criteria we feel you should be aware of when <br />reviewing our analysis and report. Due to the tubular <br />construction of this tower, it is difficult to tell the <br />a.aunt of rUst or deterioration that may have developed in <br />t:tie'" tower members. ' <br /> <br />The tubular tower members can be ultrasonicallY tested to e <br /> <br />3 <br />