Steel Joists and joist Girders - New Millennium Building Systems

Introduction
General Joist
Information
Economical
Design Guide
Top Chord
Ext., K-Series
KCS Joists Joist Substitutes
& Outriggers
Joist LRFD
Load Tables
Joist ASD
Load Tables
Load/Load
Weight Tables
Joist Girder
Weight Tables
SJI Standard
Specifications
SJI Code of
Stand. Practice
Fire Resistance
Ratings
OSHA Safety
Standards
Sloped Seat Requirements
LOW END WITHOUT TCX
HIGH END WITHOUT TCX
Notes:
Notes: 1. Notes: Sloped seats are not required for slopes less than 3/8":12" (on standard length seats).
1. 2. Notes:
1. Sloped Contact Sloped seats seats NMBS are are for not not high required end seat for for depth slopes requirements less less than than 3/8":12" when (on slope (on standard exceeds length 6":12". seats).
Notes:
2. 3. 1.
2. Contact Minimum Sloped NMBS seats
Contact NMBS seat are depths for not
for high high indicated required end seat for
end seat were depth slopes
depth determined requirements less than
requirements using 3/8":12" when when TCX slope (on
slope depths standard exceeds of 2 1/2" length 6":12". for seats). K-Series and 5" for LH-Series.
3. 2.
3. Minimum When Contact
Minimum design NMBS seat seat requires depths for high
depths indicated a end deeper seat were were TCX, depth determined minimum requirements seat using using depths when TCX slope
TCX will depths increase exceeds of of 2 1/2" 1/2" accordingly. 6":12". for for K-Series See and and the 5" 5" TOP for for CHORD LH-Series.
1. Sloped 3. When EXTENSION seats Minimum are design not seat
When design LOAD requires required depths
requires TABLES a indicated
a for deeper slopes (R TCX, were
TCX, and less S minimum determined
minimum than TYPE) 3/8”:12” on seat seat pages using depths (on TCX
depths 68 standard and will depths
will increase 69 increase for length of section 2 1/2" accordingly. seats). for
accordingly. properties K-Series See See of and the the 2½” TOP 5"
TOP deep for CHORD LH-Series.
CHORD K-Series TCX
EXTENSION LOAD TABLES (R and S TYPE) on pages 68 and 69 for section properties of 2½” deep K-Series TCX
2. Contact depths. When design requires a deeper TCX, minimum seat depths will increase accordingly. See the TOP CHORD
EXTENSION NMBS for high LOAD end TABLES seat depth (R and requirements S TYPE) on when pages slope 68 and exceeds 69 for 6”:12”. section properties of 2½” deep K-Series TCX
4. See depths. EXTENSION
depths. chart below LOAD for minimum TABLES seat (R and depth S TYPE) requirements on pages for 68 high and end 69 bearing for section conditions. properties of 2½” deep K-Series TCX
3. Minimum 4. 4. See depths.
See seat chart chart depths below indicated for for minimum were seat seat determined depth requirements using TCX depths for for high high of end end 2 1/2” bearing for conditions. K-Series and 5” for LH-Series.
4. See chart below for minimum seat depth requirements for high end bearing conditions.
When design SLOPE: requires 12" a deeper 3/8" TCX, 1/2" minimum 1" seat 1 1/2" depths 2" will increase 2 1/2" 3" accordingly. 3 1/2" See 4" the 4 1/2" TOP CHORD 5" 5 1/2" EXTENSION 6"
LOAD TABLES SLOPE: SLOPE: (R and 12" 12" S TYPE) 3/8" 3/8" on pages 1/2" 1/2" 68 1" and 1" 69 1 1/2" 1/2" for section 2" 2" properties 2 1/2" 1/2" 3" 3" of 2½” 3 1/2" 1/2" deep 4" 4" K-Series 4 1/2" 1/2" TCX 5" 5" depths. 5 1/2" 1/2" 6" 6"
MIN. SLOPE: K-SERIES 12" 3/8" 3" 3 1/2" 1/4" 3 1/4" 1" 3 1 1/2" 1/2" 3 3/4" 2" 2 4" 1/2" 4 1/4" 3" 4 3 1/4" 1/2" 4 1/2" 4" 4 3/4" 1/2" 5" 5" 5 1/4" 1/2" 5 1/2" 6"
4. See chart below for minimum seat depth requirements for high end bearing conditions.
SEAT MIN. MIN. K-SERIES K-SERIES 3" 3" 3 1/4" 1/4" 3 1/4" 1/4" 3 1/2" 1/2" 3 3/4" 3/4" 4" 4" 4 1/4" 1/4" 4 1/4" 1/4" 4 1/2" 1/2" 4 3/4" 3/4" 5" 5" 5 1/4" 1/4" 5 1/2" 1/2"
DEPTH SEAT MIN.
SEAT
LH-SERIES K-SERIES 5 3/4" 3" 5 3 3/4" 1/4" 3 6" 1/4" 6 3 1/4" 1/2" 6 3 1/2" 3/4" 6 3/4" 4" 7 4 1/4" 7 4 1/2" 1/4" 7 4 3/4" 1/2" 8 4 1/4" 3/4" 8 1/2" 5" 8 5 3/4" 1/4" 9 5 1/4" 1/2"
DEPTH SEAT
DEPTH
LH-SERIES LH-SERIES 5 3/4" 3/4" 5 3/4" 3/4" 6" 6" 6 1/4" 1/4" 6 1/2" 1/2" 6 3/4" 3/4" 7 1/4" 1/4" 7 1/2" 1/2" 7 3/4" 3/4" 8 1/4" 1/4" 8 1/2" 1/2" 8 3/4" 3/4" 9 1/4" 1/4"
DEPTH LH-SERIES 5 3/4" 5 3/4" 6" 6 1/4" 6 1/2" 6 3/4" 7 1/4" 7 1/2" 7 3/4" 8 1/4" 8 1/2" 8 3/4" 9 1/4"
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LOW END WITH TCX
HIGH END WITH TCX
SLOPE: 12” 3 /8” 1 /2” 1” 1 1 /2” 2” 2 1 /2” 3” 3 1 /2” 4” 4 1 /2” 5” 5 1 /2” 6”
MIN.
SEAT
DEPTH
K-SERIES 3” 3 1 /4” 3 1 /4” 3 1 /2” 3 3 /4” 4” 4 1 /4” 4 1 /4” 4 1 /2” 4 3 /4” 5” 5 1 /4” 5 1 /2”
LH-SERIES 5 3 /4” 5 3 /4” 6” 6 1 /4” 6 1 /2” 6 3 /4” 7 1 /4” 7 1 /2” 7 3 /4” 8 1 /4” 8 1 /2” 8 3 /4” 9 1 /4”