American Concrete Institute
ACI 445B Subcommittee
Structural Wall Performance Database: Data Schema.
Beta Version.
General Information
Contributor:
who made entry (including email)
Checked/feedback by:
who checked/corrected entry (including email) (list of names
and emails separated by semicolons)
Author:
Author(s) of report or paper separated by semicolons.
Vetting Status:
Vetted or not vetted by committee
Levels of vetting:
Level 0:
No checking has taken place.
Level 1:
Information entered once, and checked by a second person.
Level 2:
Enter information twice by two independent persons.
Reference:
Citation to report, journal, or conference paper (in End-Note
format)
Source:
Link to report, paper, or abstract (if source is copyrighted).
Specimen Label:
Label of specimen used in original report or paper.
Units:
US U.S. customary [in, kip, ksi]
SI S.I. [mm, N, MPa]
Overall Geometry
Wall Height:
Wall Length:
Vertical distance to top load
Total length of wall in the direction of the applied load
Aspect Ratio:
Ratio of wall height to wall length
Wall Width:
Dimension (in direction perpendicular to the load) of rectangle
encompassing the cross section at the base of the wall.
Ag:
Area of gross cross section
Number of stories:
Number of slabs or beams framing into the wall along its
height
Web thickness:
Minimum thickness of wall web(s)
Flange thickness:
Minimum thickness of wall flange(s)
Shape of section:
R (rectangular)
I (barbell)
Other shapes –resembling letters– (direction of loading
parallel to vertical segments of designating letter)
H
C
L
T
O
U
n
Z
N
G (general shape)
Basic dimensions (for R and I Sections only)
S1
S2
S3
S4
(depth of boundary element, flange, or full section)
(width of boundary element, flange, or full section)
(depth of web)
(thickness of web)
Cross-sectional dimensions (all sections other than R, I, G sections) or coordinates of
vertices (G sections):
S1; S2; S3; etc. (Figure 2 – dimensions numbered starting at
outermost fiber subjected to compression during first loading)
or, for G sections (geometry is specified using coordinates of
vertices):
X1, Y1; X2, Y2; X3, Y3;… X1, Y1
Concrete Properties
Age:
age of concrete at testing (in days after cast)
t1;t2;t3;t4… (Age of concrete at testing of different levels, begin
from the pedestal to roof)
Type:
Compressive
Strength:
N normalweight
L lightweight
FS1 fiber (S: steel, # for % in volume)
fc1’, fc2’…; fc(specified );fc1(28),fc2(28),fc3(28)…
Compressive strength at age of test(from the pedestal to roof,
separated by commas); specified compressive strength;
compressive strength at 28 days(from the pedestal to roof,
separated by commas)
(Entries separated by semicolons)
Type of coupon:
A 100-mm cube
B 150-mm cube
C 6x12-in. cylinder
D 4x8-in. cylinder
E cube of unknown size
F cylinder of unknown size
Reinforcement Properties
Type of reinf.
layout:
0
1
Reinforcement
Depths/Coordinates
(to vert. bars):
Format 0
D1, A1; D2, A2; D3, A3; etc. (list of depths and areas measured
and numbered from outermost fiber in compression during
first loading) .
Format 1
Yield stresses of
vertical bars:
X1, Y1, A1; X2, Y2, A2; etc.
fy1; fy2; fy3; etc. Yield stresses of vertical bars at locations 1, 2,
3, etc. (defined in field for depths/coordinates)
Ultimate stresses of
vertical bars:
fu1; fu2; fu3; etc. Ultimate stresses of vertical bars at locations
1, 2, 3, etc. (defined in field for depths/coordinates)
Fracture strains of
vertical bars:
Yield stress of
horizontal reinf.:
Ultimate stress of
horizontal reinf.:
Fracture strain of
horizontal reinf.:
eu1; eu2; eu3; etc. Fracture strains of vertical bars at locations
1, 2, 3, etc. (defined in field for depths/coordinates) (measured
over 200-mm gage length)
Yield stress of horizontal reinforcement
Ultimate stress of horizontal reinforcement
Fracture strain of horizontal reinforcement [measured over
200-mm or 8-in gage length]
Yield stress of
confinement reinf.: Yield stress of confinement reinforcement
Ultimate stress of
confinement reinf.: Ultimate stress of confinement reinforcement
Fracture strain of
confinement reinf.: Fracture strain of confinement reinforcement [measured over
200-mm or 8-in gage length]
Clear Cover in
Webs:
Clear cover to reinforcement in webs
Clear Cover in
boundary reg.:
Clear cover to reinforcement in boundary elements
Maximum s/db:
Maximum ratio of spacing of transverse reinforcement (s) to
bar diameter (db) for bars closest to outermost fiber in
compression
Lap splice lengths:
L1, L2, L3… Length of lap splices (list lengths normalized with
respect to bar diameter, separate entries by semicolons)
Reinforcement Ratios [at wall base] –can be generated automaticallyVertical Reinforcement
Web:
Ratio of total area of vertical reinforcement in web(s) to sum of
gross cross-sectional areas of web(s).
Boundary Reg.
Ratio of total area of vertical reinforcement in confined
region(s) to sum of gross cross-sectional areas of confined
region(s). (For asymmetric sections list two ratios separated
by semicolon, list first ratio for boundary in compression
during first load cycle)
Horizontal Reinforcement
Web:
Boundary Reg.
-.:
ratio area of horizontal reinforcement (parallel to the load) in
web(s) to area of concrete
ratio volume of horizontal reinforcement in confined regions
(or flanges) to volume of concrete
For asymmetric sections list two ratios separated by semicolon,
list first ratio for boundary in compression during first load cycle
Height of confined
Region(s):
Height of confined region(s).
Loading
Type of loading:
0 Pure shear
1 Single lateral load
2 Multiple lateral loads
Directionality:
U uni-axial
B bi-axial
Loading Protocol:
M Monotonic
C Cyclic
Loading points:
Number of levels at which lateral loads were applied
Height to load pts.: List of heights to loading points (separated by semicolons)
P:
Applied axial load
P-Delta Case:
Case I
Case II
Case III
Case IV
(Defined in Fig. 1)
P-Delta Correction: 0 not included in reported lateral loads
1 included in reported lateral loads
M:
Moment applied at top wall [kN-m]
Test Results
Shear Damage:
Out-of-plane
buckling:
Drift at spalling:
Drift at bar
buckling:
Drift at bar
fracture:
Did the researcher attribute the cause of failure to shear? Y/N
Did the researcher attribute the cause of failure to out-of-plane
buckling? Y/N
Reported drift at first sign of spalling .
Drifts at top loading point at buckling of bars at depths DB1;
DB2; DB3, etc.
Drifts at top loading point at fracture of bars at depths DB1;
DB2; DB3, etc.
Drift at web
crushing:
Reported drift at first indication of web crushing
Maximum base
shear Vmax:
Maximum total lateral force reported by researcher
Drift at
maximum base
shear:
Drift at yield:
Load-Deflection
Curves:
Displacement measured at top loading point at Vmax .
Top drift measured at intersection of secant to load-deflection
curve at 0.75Vmax and horizontal line at Vmax. Not reported
for walls with failures attributed to shear .
Files containing load-deflection data (two entries for biaxial
tests).
Drift Capacity:
Displacement at intersection of horizontal line at 0.8Vmax and
envelope of load-deflection curve.
Initial Stiffness:
Slope of secant to load-deflection curve at Vmax/4. [kN/m]
Comments
Critical comments about the test procedure or test results.
Analysis Input Files
Program Names:
List of names of programs (separated by semicolons).
Versions:
List of versions of programs (separated by semicolons).
Input Files
List of paths to input files (separated by semicolons).
Custom Fields
Fields generated by combining parameters in other columns
Figure 1. P-Delta Cases
(http://nisee.berkeley.edu/spd/performance_database_manual_1-0.pdf)
Figure 2. Cross-sectional Dimensions
Figure 3 Sequence of Confined Reg. Reinforcement ratios in T section (Horizontal Reinforcement)