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I <br /> c�'�c� � �i �t�. � a G-� �� , <br /> Spancrete - <br /> M/dw�st CQ. <br /> ARCHITECTURAL&STRUCTURAL PRECAST CONCRETE•BOX 1360,MAPLE GROVE,MN 55369•(612)425-5555•FAX 425-1277 <br /> C�„�� � <br /> D CRONO <br /> July 24 , 1991 ������ <br /> city of orono ,��L � 5 199�1 <br /> P.O. Box 66 <br /> Crystal Bay, MN 55323 <br /> Attn: Mr. Lyle Oman <br /> Building and Zoning Dept . <br /> Re: 4500 Lb. Point Load On Existing Spancre�te Plank <br /> Betty Roman Residence, Orono, MN <br /> Dear Sir : <br /> Based on the physical description of the Spancrete plank in this <br /> residence that we received from Mr. Dave Harrison, an analysis was <br /> done to determine the ability of the plank to support a point load <br /> of 4500 lbs . located 10 ' -0" from the bearing end. The enclosed <br /> calculations verify that the plank has sufficient capacity to <br /> support this additional loading. <br /> These calculations assume that the original superimposed design <br /> loads required were 20 psf dead tpartition) load and 40 psf live <br /> load - typical criteria for this type of structure. Also, the <br /> distribution width for the new point load was conservatively <br /> restricted to two plank widths ( 6 ' -8" ) to represent a worst <br /> possible condition. <br /> Please call if you have any questions . <br /> Sincerely, <br /> � �. "'���K� <br /> T.R. Behlmer, P.E. <br /> VP/Engineerinq <br /> Spancrete Midwest Company <br /> TRB/maf <br /> Enclosure <br /> CC: Ralph Rattray <br /> Gene Eggersgluess <br /> Betty Roman <br /> AN EEO EMVLOYER <br />