HomeMy WebLinkAboutRe: truss modification -.,, �.., „z .,. ...z . ,. , „.. � „ .,z..� .,�.L . � ...� .L....... ,�,,,,,.
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5930 Brooklyn Boulevard
�� RKB� N1inneapolis,MN 55429-2518
i'� =" ('163)843-0420 Fax: (763) 843-0421
ENG(NEERS �
---- --a�-- E-mail: bkbm@bkbm.com
M�ry 12,�:004
Mr. Jeff�)anberrv
Thc Danberry Com��any
4410 Sho reline Dri��e •
Spring P�rk,MN 5'�384 ' �-
RG: 264t3 Keliey��venue
Oro�io,MN
Dc ar Jeffi:
A4�reque:sted we i iave analyzed the truss modification that you propose for the referenced property.
We undc:rstand t iat you propose to remove the bearing wa11 supporting the roof mono-truss and
ac�jacen��hand-fra�ned roof and replace it with a pair of 16" microlams nested in the mono-truss. The
truss will be mod:�fied to allow this nesting of the support beam.
V`7e recommend �:hat the bottom chord of the truss be cut and then attached to the microlam using
fa��e-naiT�ed joist Y��ngers. The vertical end member ofthe truss should be cut to bear on the microlam.
Toenail the vertic;al to the beam. Also provide two 2x6 verticals, one on f;ach side of each truss,
at�tache�to the tc �and the bottom chords and any web members_Use construction adhesive and four
1 f�d nail:,for each connection.These verticals should be placed to abut the m�odified truss verticaC and
the new beam.
Tlie opiriions and recommendations contained in this report are based on infc�rmation provided by you
arid on design-chr:ck calculations performed that were based on that informaX.ion_This report does not
a�ldress any por:ion of the structure other than those areas mentioned. It does not provide any
warrant�i, either ::xpressed or implied, for any portion of the existing structiare.
Sincerel�,
B.AKKF;KOPP B�'.L jOU&McFARLIN,INC.
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John B. 'Cl�iesse,F E. Direct Linc_ (763) 843-0458
Principal
'L'�10I�lT�MGMOS,CO7tR SP,LTC�DANBF_RRYAS-l2-04.11OC
BKBM ENGINEERS
An Equal Opportunity Employer
CHABKA BUILbING CENTER Mark Osfby � ���'�"'� a r � 4 May 200a 8:42 am
350 Eest Highway 212 P.O, Box 89, Chaska, MN. 55318 (952�48-6776
FASTeeam�Englneerinc�AnelYsls�1996-2003 Geor�ia-Paclt�c Corporation Verslon: 4,0
Project:
Mark#: Bsam -Roof
Usage ; Beam {Roo� Repetltive : No Spacfng (in.) : 0.0
Max Defl : LL■U240 TL=L/180 Composlte Actlon : No Slope : 0/12
3.6',695 poi 3.6",565 p9i
i , 19',D"
�OAD3 PrvJect Desipn Loada:R00%Llve�s0 psf,Deed�16 pal,�
LlvetDead Ld(n Llva Ld(L) LDF Loaatlonk
� 8hape �Start �End �9tsrt�End Span# 3tarts Ende Addltlonal InTo
1 Unitorm(pl� 660 480 11696 0 0'0" 18'0"
Unlform(plf) ; 13 0 0 0 18'0" Self Welpht
'Dlmenslons measur�d hom len end when apen#!s 0,otherwise,fYom IeR end or the aasclifed span.
3UPPORTS(lbs)
1 2
Mex R'n 6391 8391
Max 115°Ye 4580 45�0
Mln R'n 1831 1831
Mln 11�y. 4560 4560
DL R'� 1931 1831
Mln Brp(In.) 3.23 3.23 [Baeed on bearing stresa belowlJ
Brp St►(us0 565 595
DESIGN
Va1ua Spen X Oroup Allow LDF Ratio
V(Iba) 5808 1 0'2" 31 10708 115% 0.31
M(ft�{bs) 30358 1 9'e" 31 31774 11a96 0.A6
�tRn(Ibd) 9391 0 0'0" 31 E921 100°k 0.92 See Note#e
RtRn(Iba) 6391 0 19'0" 31 6821 100°� 0.92 See Note p5
LLDefl(In,) 0.90 1 9'B" 31 0.95 L/252
TLD�fI(ln.) �.27 � 9�8° 31 �.a7 L/180
USE: GPLAM 2.OE 1.7'�x14.00"2 Plles Grede�elected by User
0-P LAM tm Deorqla-Paclflc Corp.
NOTES:
!.Gslpnad/n aceordanoe w/fh Natlonal Dea►gn 8p�a1Ne�Hon9 ioi Wood ConabveNon and appl1e�61�Approva/a or Resea�ch Reporta.
2.Prov/ds laMral suppoR ot tl►a baarinp/oeaHon nearost sach end o/l/i�m�mbar. Condnuoua lateral support roqu►nd l�compresafon
adpe.
8,Loada havs b��n Input by�he user end have nof bserr verMsd 6y Ooor+�la-pec/flc Enp!►leered Lumber Tsahnleal Sarvlcea.
�.Dealdn valJd fbr dry uas on/y.
6. Thl:r�aetlon la beaed on the com6/natlon ol/was B dui�don factora that producea the h/gheat aMsss nHo end mey be leaa dhan
max/mum rosallon.Thaafore,when reacNon valuss ars rsqu►rsd,us�Max R'n from 'Supports'secdon abovs.
8.8eailn�lenpth based on desl�n m�rorVai;�uppoR materla!capaNty ahaJl bs v�rlll�al(by othora).
7.Roof UQape:Inatall wl[h minlmum 1/d:12 slop�for adaquate dra(nepe.
8. Wh�n nqulrod by!he bu!!dln�cods,a isglste�sd d.sl�n prof�as/ona/oi bulldlnp o1M1cla!ahould vs�lly fha lepuf loeds and p►vduCt
applkaHon.
8. Th(a en8/nserod lumber produet h��boen slzed for iealdenNa/uss.A cone�nharod load eheck,per the 6ullding eoQe,must ba parionned
for commerclel uaea.
10. V�rlfy th�t/oad la elpp►led et top or equa/y hvm both ald�.
11.Nel!pllea together wlth i6d na0��12'o%alonp bp and bottom sdgss and fhru cant�ar.Nall l�vm eltemate facea,�'trvm sd�as.
12.Mar/M!n reactlona are baasc!on the applleab►�load eomb/nadone oudlned!n the notes, Summ�tfon of max/min reaeNona/or varloua
DOL mey not match�tvtal ma=/min roacBon.
13. Company,product or 6rand namea rofbrona�d�n tradanarks or replatered frademar�s of thslr roaps�tivo owners.
t�toad Combinatlona:10�D,20■D+10046,30=D f 11594,40■D+1?695,00�D+1339�,60■D+10096 t 11556, 70■D+�ppgy+l2s9�G
,80�D+�ppyg+13394, 90=D+10096+116gf+138y,/2, 1p0■D+10056+11594/2+�s996, 110*D+Commerolel Ld(10096)
19.Oroun=Load Combinallon Numb�r+Load Pattern number.lFor almpls apan,Loas p�lt�m�1 fo�LL.0 ior DL),
l ' d EL68 ' oN 3WOH N�SHH� W�OZ � 8 ti00� 'ti ' �FW