Wind Design Considerations for Steel Joists and Joist Girders
Joist Design
1
A B P2 P3 MECHANICAL UNIT P1 P3 JOIST DESIGN WARNING: The following drawing is published as guideline only to assist the building designer in the preparation of the building design drawings. The scope of application and adaptation of the drawing is under the responsibility of the building designer. LOADS FORCES DESIGN CRITERIA DEAD LOAD ROOF & DECK = 0.80 kPa MECH. & ELECTRICAL = 0.10 kPa STRUCTURE = 0.15 kPa JOISTS = 0.10 kPa SUSPENDED CEILING = 0.05 kPa = 1.20 kPa LIVE LOAD SNOW = 2.50 kPa ITEM A.1 JOIST DESIGNER NOTES DESIGN ALL ROOF JOISTS FOR A MINIMUM UNFACTORED ADDITIONAL POINT LOAD (DEAD LOAD) OF 1.0 kN APPLIED AT ANY TOP OR BOTTOM CHORD PANEL POINT. ITEM A.3 FOR PRICING PURPOSES 1. 40 SPRINKLER JOISTS ONE 2 kN POINT LOAD AT 1ST PANEL POINT (IN 12 m SPAN). 2. 20 SPRINKLER JOISTS WITH ADDITIONAL U.D.L. OF 0.5 kN/m (IN 10 m SPAN) JOIST DESIGNER NOTE SPRINKLER LINES TO BE HUNG FROM EVERY JOIST AT TOP CHORD PANEL POINTS ONLY U/N. ITEM A.6 GROSS UPLIFT = 1.00 kPa DEAD LOAD FOR UPLIFT = 0.90 kPa GROSS UPLIFT DIAGRAM ITEM A.2 (TYP.) 2 3 Z 3 1 3 3 1 = 1.30 kPa 2 = 1.10 kPa 3 = 1.40 kPa Z = 3 m ITEM C.1 ITEM A.4 2.60 kPa SPU1 1.20 kPa 4 m SPU1 ITEM A.7 ITEM B.1 ITEM B.2 ITEM A.8 JOIST 800 mm TYP. ITEM A.5 DISCLAIMER NOTE This document is provided as a customer service to facilitate the provision of information required for joist design in connection with an order for joists placed with Canam, a business unit of Canam Group Inc. This document is not intended to provide engineering advice, and all joist orders are subject to the terms and provisions specified in the actual order, including Canam’s Standard Terms and Conditions for Joists and Decking. Canam shall have no liability for the use of this document, and in no event shall Canam be liable for any direct, consequential or incidental damages or cost resulting from the use of this document. METRIC UNITS REVISION DATE: 01/2006 JOIST 800 mm TYP. “W” + 0.5 kN/m W410 x 54 W410 x 54 200 mm Ø MAIN ON JOIST = 5 kN/m A BRICK LOAD GRID MAX. = A/“XXX” CRANE LOADS CAPACITY = 2 700 kg CRANE WEIGHT = 3 400 kg HOIST WEIGHT = 450 kg MAX. WHEEL LOAD (DYNAMIC) = 30 kN MIN. WHEELS SPACING = 2 m IMPACT FACTOR = 1.25 ITEM A.9 ITEM B.3 ITEM B.4 JOIST 800 mm TYP. PONDING LOAD -150 mm -150 mm 180 mm = 1.8 kPa 30 mm = 0.3 kPa Af = 90 kN Af = 90 kN Af = 180 kN JOIST 800 mm TYP. JOIST 800 mm TYP. JOIST 800 mm TYP. GRID A BEAM GRID JOIST GIRDER Af = “X” kN Af = “X” kN ITEM C.3 M W M W M LL * M LL * SEE PLAN FOR JOIST LOCATION * IF APPLICABLE Af = “X” kN Af = “X” kN WIND COLUMN WIND COLUMN ITEM C.4 LIVE LOAD DEFLECTION 1. ROOF JOISTS = L/240 2. FLOOR JOISTS = L/360 ITEM C.2 JOIST DESIGNER NOTE JOISTS IN HATCHED SECTORS INDICATED ON FLOOR PLAN MUST HAVE A MINIMUM INERTIA OF “X” x 10 6 mm 4 SPECIAL LIMITED DEFLECTION SEE INDICATIONS ON DRAWING BESIDE THE CORRESPONDING JOIST (“X” mm or L/“XXX”) JOIST 800 mm TYP. A ELEV. 10 000 mm JOIST 32” TYP. A VARIABLE SEAT HEIGHTS JOIST 800 mm TYP. A JOIST 800 mm TYP. FIRE RESISTANCE 1. FLOOR CONSTRUCTION TO COMPLY WITH ULC F818. DECK TO BE STAMPED TO COMPLY WITH ULC U18.19. 2. ROOF CONSTRUCTION TO COMPLY WITH ULC R801. ITEM C.5 GENERAL NOTE THE MINIMAL THICKNESS OF TOP/BOTTOM CHORD (”X” mm) AND WEB MEMBERS (”Y” mm) MATERIAL MUST BE RESPECTED FOR WEATHER OR CORROSIVE EXPOSURE AND/OR GALVANIZATION PROCESS (IF APPLICABLE). ITEM C.7 ITEM C.6 MAXIMUM CLEAR OPENING FIRE PROTECTION LOCATION MUST BE GREATER THAN 100 mm MINIMUM 100 mm MINIMUM 2.5 x H THICKNESS VARIES D H H R MECHANICAL UNIT 200 mm Ø MAIN ROOF INSULATION (BY OTHERS) JOIST GIRDER 900 mm JOIST 1 000 @ 1 000 @ 1 000 JOIST 1 000 @ 990 @ 1 000 JOIST 1 000 @ 1 000 @ 1 000 JOIST 1 000 @ 990 @ 1 000 JOIST 1 000 @ 980 @ 1 000 JOIST 1 000 @ 980 @ 1 000 SPECIAL CAMBER ”X” mm MECHANICAL UNIT 1 400 kg MAX. DIMENSIONS 3 m x 2 m A POINT LOAD (SPECIFIED) 2.0 kN 3.0 kN 4.5 kN P1 P2 P3 -50 mm -75 mm -50 mm -100 mm -150 mm -100 mm -150 mm W310 x 21 W310 x 21 W310 x 21 -100 mm -100 mm W410 x 54 W410 x 54 www.canam.ws www.canam.ws
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Transcript of Joist Design
AB
P2 P3
MECHANICALUNIT
P1 P3
JOIST DESIGN
WARNING: The following drawing is published as guideline only to assist the building designer in the preparation of the building design drawings. The scope of application and adaptation of the drawing is under the responsibility of the building designer.
LOADS
FORCES
DESIGN CRITERIA
DEAD LOADROOF & DECK = 0.80 kPaMECH. & ELECTRICAL = 0.10 kPaSTRUCTURE = 0.15 kPaJOISTS = 0.10 kPaSUSPENDED CEILING = 0.05 kPa = 1.20 kPaLIVE LOADSNOW = 2.50 kPa
ITEM A.1
JOIST DESIGNER NOTESDESIGN ALL ROOF JOISTS FOR A MINIMUM UNFACTORED ADDITIONAL POINT LOAD (DEAD LOAD) OF 1.0 kN APPLIED AT ANY TOP OR BOTTOM CHORD PANEL POINT.
ITEM A.3
FOR PRICING PURPOSES1. 40 SPRINKLER JOISTS ONE 2 kN POINT LOAD AT 1ST PANEL POINT (IN 12 m SPAN).
2. 20 SPRINKLER JOISTS WITH ADDITIONAL U.D.L. OF 0.5 kN/m (IN 10 m SPAN)
JOIST DESIGNER NOTE
SPRINKLER LINES TO BE HUNG FROM EVERYJOIST AT TOP CHORDPANEL POINTS ONLYU/N.
ITEM A.6
GROSS UPLIFT = 1.00 kPa
DEAD LOAD FOR UPLIFT = 0.90 kPa
GROSS UPLIFT DIAGRAM
ITEM A.2
(TYP.)
2
3Z
3 1
3
3 1 = 1.30 kPa2 = 1.10 kPa3 = 1.40 kPaZ = 3 m
ITEM C.1
ITEM A.4
2.60 kPa
SP
U1
1.20 kPa
4 m
SPU1
ITEM A.7
ITEM B.1
ITEM B.2
ITEM A.8
JOIS
T 8
00 m
m
TY
P.
ITEM A.5
DISCLAIMER NOTEThis document is provided as a customer service to facilitate the provision of information required for joist design in connection with an order for joists placed with Canam, a business unit of Canam Group Inc.This document is not intended to provide engineering advice, and all joist orders are subject to the terms and provisions specified in the actual order, including Canam’s Standard Terms and Conditions for Joists and Decking. Canam shall have no liability for the use of this document, and in no event shall Canam be liable for any direct, consequential or incidental damages or cost resulting from the use of this document.
METRIC UNITS
REVISION DATE: 01/2006
JOIS
T 8
00 m
m T
YP.
“W”
+ 0.
5 kN
/m
W410 x 54
W410 x 54
200
mm
Ø M
AIN
ON JOIST = 5 kN/m
A
BRICK LOADGRID
MAX. = A/“XXX”
CRANE LOADS CAPACITY = 2 700 kgCRANE WEIGHT = 3 400 kgHOIST WEIGHT = 450 kgMAX. WHEEL LOAD (DYNAMIC) = 30 kNMIN. WHEELS SPACING = 2 mIMPACT FACTOR = 1.25
ITEM A.9
ITEM B.3
ITEM B.4
JOIS
T 8
00 m
m T
YP.
PO
ND
ING
LO
AD
-150 mm -150 mm180 mm = 1.8 kPa
30 mm = 0.3 kPa
Af = 90 kN Af = 90 kNAf = 180 kN
JOIST800 mm TYP.
JOIST800 mm TYP.
JOIST800 mm TYP.
GRID
A
BEAM
GRID
JOIST GIRDERAf = “
X” kN
Af = “X” kN
ITEM C.3
MW MWMLL* MLL*
SEE PLAN FOR JOIST LOCATION* IF APPLICABLE
Af = “X
” kN
Af = “X” kN
WIND COLUMN WIND COLUMN
ITEM C.4
LIVE LOAD DEFLECTION1. ROOF JOISTS = L/240 2. FLOOR JOISTS = L/360
ITEM C.2
JOIST DESIGNER NOTEJOISTS IN HATCHED SECTORS INDICATED ON FLOOR PLAN MUST HAVE A MINIMUM INERTIA OF “X” x 106 mm4
SPECIAL LIMITED DEFLECTIONSEE INDICATIONS ON DRAWING BESIDE THECORRESPONDING JOIST (“X” mm or L/“XXX”)
JOIS
T 8
00 m
m T
YP.
A
ELEV. 10 000 mm
JOIS
T 3
2” T
YP.
A
VARIABLE SEAT HEIGHTS
JOIS
T 8
00 m
m T
YP.
A
JOIS
T 8
00 m
m T
YP.
FIRE RESISTANCE1. FLOOR CONSTRUCTION TO COMPLY WITH ULC F818. DECK TO BE STAMPED TO COMPLY WITH ULC U18.19.
2. ROOF CONSTRUCTION TO COMPLY WITH ULC R801.
ITEM C.5
GENERAL NOTETHE MINIMAL THICKNESS OF TOP/BOTTOM CHORD (”X” mm)AND WEB MEMBERS (”Y” mm) MATERIAL MUST BERESPECTED FOR WEATHER OR CORROSIVE EXPOSURE AND/ORGALVANIZATION PROCESS (IF APPLICABLE).
ITEM C.7
ITEM C.6
MAXIMUM CLEAR OPENING
FIRE PROTECTION
LOCATION MUST BE GREATER THAN
100 mm MINIMUM
100 mm MINIMUM2.5 x H
THICKNESS VARIES
D H
H
R
MECHANICALUNIT
200 mm Ø MAIN
ROOF INSULATION(BY OTHERS)
JOISTGIRDER 900 mm JO
IST
1 00
0 @
1 0
00 @
1 0
00
JOIS
T 1
000
@ 9
90 @
1 0
00
JOIS
T 1
000
@ 1
000
@ 1
000
JOIS
T 1
000
@ 9
90 @
1 0
00
JOIS
T 1
000
@ 9
80 @
1 0
00
JOIS
T 1
000
@ 9
80 @
1 0
00
SP
EC
IAL
CA
MB
ER
”X”
mm
MECHANICAL UNIT1 400 kg MAX.DIMENSIONS
3 m x 2 m
A
POINT LOAD (SPECIFIED)2.0 kN3.0 kN4.5 kN
P1P2P3
-50 mm -75 mm -50 mm
-100 mm -150 mm -100 mm
-150 mm
W310 x 21 W310 x 21 W310 x 21
-100 mm
-100 mm
W410 x 54
W410 x 54
www.canam.wswww.canam.ws
