8 - 148
BOLTS, WELDS, AND CONNECTED ELEMENTS
Table 8-36 (cont.). Prequalified Welded Joints Partial-Joint-Penetration Groove Welds Square-groove weld (1) Butt joint (B)
Base Metal Thickness (U = unlimited)
Welding Process
Joint Designation
T1
SMAW
B-P1a
1 ⁄8
max
B-P1c
1 ⁄4
max
Groove Preparation Tolerances
T2
Root Opening
As Detailed
As Fit Up
Permitted Welding Positions
Effective Throat (E)
Notes
—
R = 0 to 1⁄16
+1 ⁄16 , − 0
± 1 ⁄16
All
T 1 − 1 ⁄32
B
—
T1 R= min 2
+1 ⁄16 , − 0
± 1 ⁄16
All
T1 2
B
Square-groove weld (1) Butt joint (B)
E 1 + E 2 must not exceed
Welding Process
Joint Designation
SMAW
B-P1b
3T1 4
Base Metal Thickness (U = unlimited) T1
T2
max
—
1 ⁄4
Groove Preparation Tolerances Root Opening
As Detailed
As Fit Up
Permitted Welding Positions
Effective Throat (E)
T1 R= 2
± 1 ⁄16 , − 0
± 1 ⁄16
All
3T1
Notes
4
Single-V-groove weld (2) Butt joint (B) Corner joint (C)
Welding Process
Joint Designation
SMAW
BC-P2
GMAW FCAW
BC-P2-GF
SAW
BC-P2-S
Groove Preparation Base Metal Thickness Tolerances (U = unlimited) Root Opening Root Face As As Fit T1 T2 Up Groove Angle Detailed 1 ⁄4
1 ⁄4
7 ⁄16
min
min
min
U
U
U
R=0 f = 1⁄32 min α - 60°°
0, +1 ⁄16 +u, −0 +10°°, − 0°
+1 ⁄8 , − 1 ⁄16
R=0 f = 1 ⁄8 min α - 60°°
0, +1 ⁄16 +u, −0 +10°°, − 0°°
+1 ⁄8 , − 1 ⁄16
R=0 f = 1 ⁄4 min α - 60°°
±0 +u, −0 +10°°, − 0°°
+1 ⁄16 , − 0*
Permitted Welding Positions
Effective Throat (E)
All
S
B, E, Q2
All
S
A, B, E, Q2
F
S
B, E, Q2
± 1 ⁄16 +10°°, − 5° ± 1 ⁄16 +10°°, − 5°° ± 1 ⁄16 +10°°, − 5°°
AMERICAN INSTITUTE OF STEEL CONSTRUCTION
Notes