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CW3 specimen evidence

Specimen record · CW3

CW3 · coupled two-panel CLT wall · cyclic

Source checked

measured data · CLT wall · cyclic loading

Permanent specimen pageBenchmark · academic access
“Source checked” describes the recorded fields and their cited sources. Missing fields remain unknown; it does not establish complete test documentation or model validity.

Geometry and lay-up

Height
3000 mm
Width
2400 mm
Length / span
Not recorded
Thickness
191 mm
Layer count
7
Ordered layer thicknesses
35 / 17 / 35 / 17 / 35 / 17 / 35 mm
Outer-layer grain orientation
Not recorded
Opening type
none
Opening width
Not recorded
Opening height
Not recorded
Lintel depth
Not recorded
Parapet depth
Not recorded
Species
Not specified for the CLT panel in the checked conference report
Grade
V2 (CSA O86); supplied by Structurlam
Moisture content
Not recorded

Test conditions and measurements

Loading direction
in-plane
Loading protocol
cyclic
Protocol details
Quasi-static reversed cyclic, abbreviated CUREE history per ASTM E2126 (2001). Target at 100% set to 60% of displacement at failure in the matching monotonic test.
Gravity load
20 kN/m
Connections and anchorage
2 WHT440 hold-downs at outside edges; 4 TCN200 shear brackets. Conference Section 2 specifies 75 Anker nails per hold-down and 36 per bracket, each nail 4 mm in diameter and 60 mm long. Two 1200 mm panels coupled by a one-sided 25 × 140 mm Douglas-fir plywood surface spline, with Anker nails, each 4 mm in diameter and 60 mm long, at 300 mm spacing; spline spliced at one-third wall height.
Boundary conditions
Base anchored with hold-downs and shear brackets to the test foundation. Lateral load applied at the top through a steel H-beam and pins at each panel midpoint. Superimposed gravity system restrained out-of-plane movement. See source Figure 3.
Displacement measurement
actuator
Force measurement
Signed Lead Actuator Force, kN (source column C). peakLoadKN is the largest absolute measured actuator force across the complete test.
Stress-area basis
not-applicable
Recorded peak load
67.2476875 kN
Recorded stiffness
Not recorded
Stiffness definition
No stiffness value curated. Any benchmark stiffness is calculated separately using its stated definition.

Measured response

4,812 curated curve points are available for benchmarking.

45,145 original measured B/C rows reduced to 4,812 original points in acquisition order. The reducer retains global force/displacement extrema, actuator excursion turning points of at least 0.5 mm, and four extrema per time-index bucket. No coordinate smoothing, interpolation, zeroing or sign changes. Positive and negative global peak force and their displacement coordinates are exactly retained. Download the full CSV for unreduced data.

A displacement measured at an actuator includes the test system response. It should not be treated as wall-top displacement or drift without the corresponding measurement definition.

Failure sequence

A source-linked damage chronology has not been recorded for this specimen. First damage and ultimate failure are not inferred from the force–displacement curve.

Campaign and related reports

UNBC / Fast + Epp nailed single-storey CLT shear walls

Md Shahnewaz; Carla Dickof; Thomas Tannert · 2020

Single- and coupled-panel wall campaign conducted at UNBC. Seven source-matched tests are curated here from the larger campaign; they are solid panels without openings.

Reports are linked to this campaign so that the same experiments are not counted again for each publication. Distinct specimens can be distinct tests while sharing an experimental campaign.

Two linked reports currently recorded: CSCE 2022 and Engineering Structures 2023. This is not an exhaustive publication count. The 2024 proceedings chapter is a published conference version, not another experimental campaign. Dataset is counted separately from publications.

Specimen sources and reuse

Reuse licence: CC BY 4.0 ↗

Record limitations

Actuator displacement is not the independent wall-top string-pot displacement. Outer-grain orientation, CLT species, moisture and individual failure sequences are not source-verified. No openings or VOL labels are inferred. Cyclic curves must not be treated as monotonic curves; stiffness and energy depend on the chosen protocol and definition.