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� DESIGN <br /> STRUCTURAL ENGINEERING <br /> 1409 S. 7th St. HOPKINS, MN 55343 <br /> 935-5550 20�4 06 1� <br /> Jae & Sandv R.auschendorfer <br /> �895 Shoreline Drive <br /> Orono_ Minnesota 55391 <br /> Att: Sandy Rauschendorfer 952-471-9230 w:952-472-6882 <br /> Re: Residence Remodel Str-uctural !�natysis for Bsmt. Beam { V4'R# 298-2} <br /> �' <br /> As requested, we met yesterday at your home. We observed the new triple 13" Larninated tieneer <br /> Lumber (LvL)beam in the living room, spanning 16' supportirzg the upper level bedroom & a <br /> portion of the roof, as weIl as tY�e large beams installed in a 1930 remodel. The major concern u�as <br /> the relocated column load on the Masement beam. We measured the structural members & floor <br /> areas for later analysis, as welt as discussed likely constructi�n requirements. <br /> �H�LYSIS <br /> Using code prescribed live loads of 40 pounds per square foot (psfl and observable dead loads we <br /> performed a structural analysis of the loading line 8 feet in frotn the South side of the house ( where <br /> the stacked LvL's were installed}. The new triple 13" LvL can safely support superimposed loads, <br /> being stressed to 82°ro of capacity� and a mazunum live load defl�etion ratio of span divided by 350 <br /> (= La'350). A historical live load deflection ratio of LJ3601imits plaster cracking. This remodel onl_y <br /> slightly exceeds this limit. The e�stin�Basement Beam consisted of 8 laminations af 1 3/4"x 16" <br /> LvL. The 8-16"LvL beam can safely support superimposed loads, bzing stressed to 75°ro of capacity <br /> and a ma�mum live load deflection rario of L�350. Continuing the vertical load path: the center <br /> basement column is stressed to less than(an acceptable) 30(}psi; and the center footing is loadi� the <br /> soil with 3300 psf(no different than before the latest remodel}. <br /> ��a��n��to�xs <br /> The new triple LvL Living room beaxn must have the end bearing areas rebuilt with the exclusion of <br /> flat lumber ( plates & plywood} from LvL beam to Basement LvL Beam. Shore the beam one end <br /> at a time, remove minimal amount of plate and floor, install bearing siuds, block adjacent to bearing <br /> studs {under king studs) thru floor thickness. The East�all with 3- 2x4 (SPF#1+2) direct bearing <br /> studs, w�th 2x4 king stud each side is adequate to suppart the load. The W est wall with 2- 2�6 <br /> (SPF#I+2) direct bearing studs is adequate to support the load. Solid block 3-2x6 thru floor over <br /> Basement beam. The e�istin� southern 8 foot living room eatension ceiling has a few butt spliced <br /> 2x8 joist. These must be doubled with new lumber. <br /> �%e believe this should address vour immediate needs. If you have any additional concerns, or <br /> questions on our , please call to discuss them. Thank you for the opportunih�to assist you . <br /> � <br /> S' cerely `� �``� <br /> � - <br /> , , <br /> _._,__ _.. _.. <br /> _ ,._ <br /> V,,: C�� ..;�` <br /> t�'arren T�r. Rutledge Y.E. �`��r�3e <br /> �'R Design Structural Engineering <br /> 1409 South Seventh Street <br /> Hopl:ins, Mimiesota 55343-7894 <br /> [mso\_d ata`.295-2msc-ip't.doc] <br />