05425 Cold-Formed Steel Trusses
Roof Truss Spans Ty Typica ical Roof Truss Des Desig ign n Spans Every TrusSteel roof truss is a custom design based upon the unique load, span, bearing, use, and code criteria of a particular project. The load / span tables shown below demonstrate only a tiny subset subset of the possible combinations available with TrusSteel CFS roof trusses. Lo ad 1 20, 10, 10 p s f 90 mp h wi nd TSC2.75 TSC4.00 2’ 2’ 4’ 2’ 4’
Lo ad 2 30, 10, 10 p s f 90 mph w i n d TSC2.75 TSC4.00 2’ 4’ 2’ 4’
Lo ad 3 20, 10, 10 ps f 140 mp h wi nd TSC2.75 TSC4.00 2’ 4’ 2’ 4’
Lo ad 4 30, 10, 10 p s f 140 mph w i n d TSC2.75 TSC4.00 2’ 4’ 2’ 4’
48 56 62 64 64 64
26 31 33 36 37 38
80+ 80+ 80+ 80+ 80+ 80+
62 77 80+ 80+ 80+ 80+
38 45 52 55 56 58
20 23 27 27 28 30
80+ 80+ 80+ 80+ 80+ 80+
52 60 65 75 80+ 80+
48 56 62 64 64 64
26 31 33 33 35 37
80+ 80+ 80+ 80+ 80+ 80+
62 77 80+ 80+ 80+ 80+
38 45 52 55 56 58
20 23 27 27 28 30
80+ 80+ 80+ 80+ 80+ 80+
52 60 65 75 80+ 80+
Pi t c h 3/12 4/12 5/12 6/12 7/12 8/12
27 34 40 46 50 53
15 19 22 25 28 31
57 69 77 79 80+ 80+
32 43 51 57 60 61
22 28 33 38 44 49
13 15 18 20 23 25
48 65 69 72 73 74
26 36 42 47 53 55
27 34 40 46 50 53
15 19 22 25 28 31
57 69 77 79 80+ 80+
32 43 51 57 60 61
22 28 33 38 44 49
13 15 18 20 23 25
48 65 69 72 73 74
26 36 42 47 53 55
Pi t ch 3/12 4/12 5/12 6/12 7/12 8/12
36 34 34 34 34 34
25 26 26 26 28 28
80+ 80+ 80+ 80+ 80+ 80+
60 64 64 64 64 64
32 32 32 32 33 33
21 23 23 23 23 23
80+ 80+ 80+ 80+ 80+ 80+
50 52 52 52 52 52
36 34 34 34 34 34
25 26 26 26 28 28
80+ 80+ 80+ 80+ 80+ 80+
60 64 64 64 64 64
32 32 32 32 33 33
21 23 23 23 23 23
80+ 80+ 80+ 80+ 80+ 80+
50 52 52 52 52 52
Dept h 12” 18” 24” 36” 48” 60” 72”
22 30 39 49 58 65 66
18 23 28 35 36 36 33
24 36 45 64 75 80+ 80+
20 28 35 46 55 62 68
19 29 35 44 51 57 51
16 21 25 28 29 29 25
24 33 42 59 70 80 80+
20 27 32 41 49 55 61
22 30 39 49 58 65 66
18 23 28 35 36 36 33
24 36 45 64 75 80+ 80+
20 28 35 46 55 62 68
19 29 35 44 51 57 51
16 21 25 28 29 29 25
24 33 42 59 70 80 80+
20 27 32 41 49 55 61
Ch or ord Si ze ze O.C. Tr us s Spans Commo n Pi t c h 3/12 4/12 5/12 6/12 7/12 8/12 Sc i s so r
Mo no
Fl at
General Notes: 1) Spa Spans ns shown shown in chart charts s are in feet. feet. 2) Load Loads s shown above above are outlined outlined as Top Top Chord Live Live Load (TCLL), (TCLL), Top Chord Chord Dead Dead Load (TCDL), and Bottom Chord Dead Load (BCDL). 3) Top chord chord designed designed assuming assuming structural structural sheathing sheathing offers offers lateral lateral restraint. restraint. 4) Botto Bottom m chords chords designed designed assuming assuming lateral lateral restraint restraint spaced spaced at 24 inches inches on center. center. 5 ) De flfl ec ec titi on on l im im itit s: s: Li ve ve L oa oa d - L/ 36 36 0 T ot ot al al Lo ad ad - L /2 /2 40 40 6) Tru Trusse sses s design designed ed with with ASCE7ASCE7-98 98 wind wind - Wind speed shown in charts - Exposure C - Building category II - Truss bearing elevation is 8’0” - No topographic effect from escarpment or hill taken into account - Enclosed building 7) Some trusses trusses above above may require require a piggyba piggyback ck truss due to excessiv excessive e truss height. height. 8) 80+ as shown shown above above means means that a span span in excess excess of 80’0” 80’0” is possible possible.. Refer to to TrusSteel TrusSteel Technical Bulletin TB991102 and a TrusSteel engineer regarding these spans. 9) Sciss Scissor or trusses trusses designed designed with a bottom bottom chord pitch pitch equal equal to half of the top top chord pitch pitch i.e. a 6/12 top chord pitch scissor truss will have a 3/12 bottom chord pitch. 10) Designs may include multiple gauges for top and bottom chords chords as determined by the designer using Alpine’s VIEW engineering engineering software. Maximum chord gauges are 18 gauge for the TSC2.75 chord and 16 gauge for the TSC4.00 chord. 11) The truss web pattern used in the design design is to be determined determined by the designer designer using Alpine’s VIEW engineering software.
0211 5K
® ALPINE
Divis Div ision ion o f Alpine Enginee red Pr Prod od ucts, Inc.
TrusSteel Division of Alpine Engineered Products, Inc. 3208 Fisher Court • Arlington, TX 76001 • 888-565-9181 • Fax: 817-483-1521
05425 Cold-Formed Steel Trusses
Floor Truss Spans Ty Typica ical Floo loor Truss Des Desig ign n Spans Every TrusSteel floor truss is a custom design based upon the unique load, span, bearing, use, and code criteria of a particular project. The load / span tables shown shown below demonstrate only a tiny subset subset of the possible combinations available with TrusSteel CFS floor trusses. L oad 1 40, 10, 5 p s f Cho rd Si ze O.C .C.. Trus russs Sp Spac acing ing Depth 12” 14” 16” 18” 20” 22” 24”
Ch o rd Si ze O.C .C.. Truss Spa Spacing cing Depth 12” 14” 16” 18” 20” 22” 24”
L oad 2 80, 10, 5 p s f
12”” 12
TSC2.75 16” 19 16” 19.2 .2”” 24 24””
12”” 12
TSC4.00 16” 19 16” 19.2 .2”” 24 24””
12”” 12
TSC2.75 16” 19 16” 19.2 .2”” 24 24””
12”” 12
TSC4.00 16” 19 16” 19.2 .2”” 24 24” ”
22 25 28 31 33 36 38
20 22 25 27 30 32 34
24 28 32 36 40 44 47
24 27 31 34 37 39 42
17 19 22 24 26 28 30
15 17 19 21 23 25 27
21 24 27 29 32 34 37
18 21 24 26 29 31 33
12”” 12
Load 3 125, 10, 5 psf TSC2.75 TSC4.00 16”” 19 16 19.2 .2”” 24 24”” 12 12”” 16 16”” 19 19.2 .2”” 24 24” ”
14 16 18 20 22 23 25
13 14 16 18 19 21 22
18 21 23 26 28 30 32
12 14 15 17 18 20 21
17 19 21 23 26 27 29
11 13 14 15 16 18 18
17 20 22 25 27 29 31
22 25 28 31 34 37 39
16 18 20 22 24 26 28
14 17 19 21 22 24 26
20 23 25 29 31 34 36
13 15 17 19 21 22 24
14 16 18 20 22 23 25
13 15 17 18 20 22 23
18 20 22 24 27 29 31
16 18 20 22 24 26 28
General Notes: 1) Span Spans s Shown in charts charts are in feet. 2) Loads shown above are outlined as Top Top Chord Live Load (TCLL), Top Chord Dead Load (TCDL), and Bottom Chord Dead Load (BCDL). 3) Top and bottom bottom chords chords designed designed assuming assuming structural sheathing offers lateral restraint. 4) De Defl flec ecti tion on li limi mits: ts: Live Li ve Loa Load d - L/4 L/480 80 Total Load - L/360 5) Chase Chases s are to be located located in center center of span. Maximum chase width allowed is 24 inches. 6) Refer to TrusSteel TrusSteel Technical Technical Bulletin Bulletin TB971125 TB971125 for TrusSteel floor truss design criteria. 7) Desig Designs ns may include include multiple multiple gauges for top and and bottom chords as determined by the designer using Alpine’s VIEW engineering engineering software. Maximum chord gauges are 18 gauge for the TSC2.75 chord and 16 gauge for the TSC4.00 chord.
Allowable Duct Sizes B D
A
Depth
F
Panel Size
C E
Dept h 12” 14” 16” 18” 20” 22” 24”
Typical Pan el Si ze 60.00 60.00 60.00 60.00 60.00 60.00 60.00
Duct Opening Sizes for A B 6.25 6.00 8.25 7.50 10.25 8.75 12.25 10.00 14.25 11.00 15.75 12.00 17.25 12.75
Dept h 12” 14” 16” 18” 20” 22”
Typical Duct Opening Sizes for Pan el Si ze A B 60.00 3.75 3.75 60.00 5.75 5.75 60.00 7.75 7.75 60.00 9.75 9.00 60.00 11.75 10.00 60.00 13.75 11.00
2.75” Chord Size Steel Floor Truss 2.75” C D E 14.00 5.00 20.00 17.00 5.75 22.00 14.00 8.00 27.00 14.50 9.50 26.00 14.50 11.00 26.00 15.00 12.25 30.00 16.00 13.25 32.00
F 4.00 4.75 4.75 6.00 7.25 6.75 7.00
4.00” Chord Size Floor Truss 4.00” C D E 14.00 3.75 20.00 17.00 4.50 22.00 14.00 6.75 27.00 14.50 8.25 26.00 14.50 9.75 26.00 15.00 11.00 30.00
F 2.75 3.50 3.50 4.75 6.00 5.50
All panel and duct opening size dimensions shown above are in inches. ® ALPINE
Divis Div ision ion o f Alpine Enginee red Pr Prod od ucts, Inc.
TrusSteel Division of Alpine Engineered Products, Inc. 3208 Fisher Court • Arlington, TX 76001 • 888-565-9181 • Fax: 817-483-1521
