1995 SMACNA PER TABLE 1-4
WITH TIE-ROD OPTION
SNAPLOCK SEAM CONSTRUCTION
|
DUCT SIZE
|
GALV GUAGE
|
SMACNA
CODE
|
JOINT
CONNECTION |
FINISHED
LENGTH |
SINGLE
REINFORCEMENT
|
DOUBLE
REINFORCEMENT |
0" - 12"
|
26
|
|
SD |
59" |
|
|
13" - 18"
|
26
|
B
|
SSD-26 |
59" |
|
|
19" - 28"
|
26
|
C
|
SSD-22 |
59" |
|
|
29" - 36"
|
24
|
D
|
SSD-20 |
59" |
|
|
37" - 42"
|
24
|
E
|
BSSD-22GA 1 1/2" x 1/8" BAR |
59" |
|
|
43" - 48"
|
26
|
E
|
BSSD-22GA 1 1/2" x 1/8" BAR |
59" |
CTR |
|
49" - 60"
|
24
|
E
|
BSSD-22GA 1 1/2" x 1/8" BAR |
59" |
CTR |
|
61" - 72"
|
22
|
F
|
BSSD-22GA 1 1/2" x 1/8" BAR |
59" |
|
DTR |
73" - 84"
|
22
|
H
|
ASSD-20GA 2" x 1/8" ANGLE |
59" |
|
DTR |
85" - 96"
|
20
|
H
|
ASSD-20GA 2" x 1/8" ANGLE |
59" |
|
DTR |
Abbreviations:
SD = FLAT-S & DRIVE
SSD = STANDING-S & DRIVE
BSSD = BAR REINFORCED STANDING-S & DRIVE
ASSD = ANGLE REINFORCED STANDING-S & DRIVE
CTR = CENTER TIE ROD (TUBE WITH THREADED INSERT)
DTR = DOUBLE TIE ROD (TUBE WITH THREADED INSERT)
|