7307 EVERGREEN WAY 2018-01-01 MF Import

j. r f' i' � snc;�n��o:t �;t•rr,�;.vc 3,1 Strucciiral Description Che upper 5[ory wa� meved from n previous locatlon several years ago. It censists of shop-fabricated ).ight wood trusses spanning the entire width of che butiding, supported on the west b�� wood beams and colu�s �td on the eust Uy a irame bearing wall. The center hay does not contain [russes, hut is of rafters spanning between beams which are supported abc,e [wo maln glued laminated beams. The ceiling in this bay is vaulted and is �1so suppor[ed by the ts:o main glued laminated beams. Ttie floor was also moved from a previous location and consists of joist supported b:• timber beams and columna and one frame bearing wall. The north, south and aest walls of the basement are concrete. The east bearing wall is frane construction. 1't�e basement floor is concrete slab on grade. T7�e east and west 51.opea of the roof appear to sag, however this change in pitch ls due [o wedges applied to the tops of the raf[ere near the eaves for architectural reasons. 3•2 btructural Deficiencies This building }�as ttiree major structural deficiencies, which will be explained in detail. The roof structure over the center bay is inadequate to support required snow loade of 25 pounds per. square foot. It appears that thie structure was conetruc[ed without benefit of professional assiatance as four beame are seriously imdersized. The lack of an adequate ridge beam has reaulted in the rafters pushing east and west, allowing the rldge beam to eag vieibly. This thrust has undoubtedly contributed to the movement at the front of the building mentioned below. The vaulted ceiling over the ceii2er bay wss apparently designed to be supported directly on the glued laminated beamv adjacent to thie bay, however tlie joist were blocked tightly at each end and are acting as an arch. The thrust produced by this arching actian ia not betng properly resis[ed and ie causing the front of [hie bay to move outward� resulting in the three center front colimma tilting o�est at the top. Although there is dietress in the plasterboard ceiling ac all four corners of the vaulted part, most of the movement has been concentrated at the weet (front) end where mlecellaneous framing has provided lesa resistance. The primary cause of the east cracke appears to be the diPference in etiffneae betveen the glued laminated beams and the adjacent truases. The lightly-loaded trusses are deep and atiff and deflect very little, wherees the beame are ehallow and deflect more imder their subetantial loa3s. The entire showroom roof has almoet no calculable resietance to lateral forces due to wind ar eatthquakes, This is the most aerioue atructural deficiency in the entire building complex. There is a hi of catastrooic failure in the event of hi¢h win�tp ,,.. ,�e{„�„probab3litv wc recommena evac ot che service en evacuation ia not warning. 3 rn Of courae, ee there ie no j _J(�% (y-IGt_.-.�(�,.LC��i�. ✓ �