Oliver Residence CSS Letter 2019.05.291 of 2
LONGITUDE
ONE TWENTY°
ENGINEERING & DESIGN
STRUCTURAL ENGINEERING SERVICES - CSS
Document created as of the 291h day of May, 2019
Project Name: Oliver Addition Project Number: S190226-3
Project Location: 19806 80th PI. W, Edmonds, WA
Client's Name: Richard and Sarah Oliver (Owner)
Client's Address: 19806 80th Pl. W, Edmonds, WA
To whom it may concern,
L120 was contacted to revise the connection framing of the (plan) east -west running 8-3/4"x10-1/2" Glulam beam.
These revisions were requested to eliminate all exposed connection plates to promote the aesthetics of this
exposed beam.
The connection on the (plan) west end of the beam is critical as it pulls lateral loads from the roof diaphragm into
the adjacent shear wall. L120 has required that a HDU2 Holdown be installed with a S/8" x 10" lag screw into the
end grain of the beam. Please refer to the attached SSK-01 for clarification.
The connection on the (plan) east end of the beam is a gravity connection only and requires only a positive
connection to the bundled studs below. This has primarily been achieved by toenails from the bundled studs
below and the perpendicular wall framing into the side of the beam with a full height stud attaching directly to the
beam. To further tie-in this connection, the contractor shall install (3) %" x 6" SIDS screws, driven at an angle
(toenailed) from the face of the bundled studs below into the bottom of the beam. These screws shall be placed a
minimum of 2" below the top of the studs and shall be fully embedded into the beam above. Contractor to ensure
that splitting of the wood does not occur with the installation of these screws. No additional clips or hardware are
required for this connection.
Please let us know if you have any questions.
Sincerely,
♦•4� i �1ii.9�•♦
♦. S�ONAL �N. •
Mans R. Thurfjell, P.E.
L120 Engineering & design
mthurfiell@1120engineering.com
Carl M. Harris, P.E.
L120 Engineering & design
charris@1120engineering.com
LONGITUDE
ONE TWENTY
ENGINEERING & DESIGN
PROJECT
SUBJECT
BY
2of2
PROJECT NO. SHEET NO.
S190226-3 SSK-01
Oliver Addition
Concealed Glulam Connections
CMH
DATE 05/29/2019
HDU2 HOLDOWN W/ (1) 5/8"
nIARA u 1(1" I nr Qr'QQ\A/ INTO
/I BEAM
AN
')TUDS
L120 ENGINEERING & DESIGN