Secondary Framing 1
Secondary Framing Materials 2
Secondary Framing Variety of material thicknesses Thickness range from 17 gage to 11 gage Acrylic-coated coated galvanized secondary ( VP Tech Perspective#38) (Gray and Patrician Bronze also available. Individual members are designed for specific loads 3
Secondary Framing SEDs used shown on Erection Drawings 4
Secondary Shapes Cee Zee Eave Purlin 5
Common Secondary Depths 6
From Details, August 2008 issue 7
Purlins and Girts 8
Secondary Framing Basic Structural Shapes ZEEs and CEEs - 7, 8 1/2, 10, & 11 1/2 9
Secondary Framing Roof 10
Erecting Bay 11
Roof Secondary Framing Eave Members 7, 8 1/2, 10, and 11 ½ Depths Always simple span because of shape 12
Roof Secondary Framing Continuous Purlins Lap adjacent purlins 13
Roof Secondary Framing 14
Roof Secondary Framing 15
Roof Secondary Framing Simple Span Purlins Not a Structural Lap 16
Roof Secondary Framing Default Purlin spacings are 5-0 Other spacings may be used Other spacings may be used C L 17
Roof Secondary Framing Flange Braces Bolts to purlin and frame Prevents frame from twisting Frame benefits, not the purlin 18
New Channel Purlin Brace Consolidated G30 purlin brace channel will be used for Erection and Purlin Bracing. Sag angles will be discontinued. Used as discrete bracing, for untested panels, or fixed clip locations. Not allowed with 7 purlins Secondary 19
20 Secondary
21 Secondary
Roof Secondary Framing Larger Bays ( 30 feet + ) 23
Roof Secondary Larger Bays 11 1/2 Purlins Features: Spans in excess of 30 May be used with Panel Rib roof system Cost may be greater than Transbay 24
Purlins at Hip/Valley 25
Truss Purlin 36
Truss Purlin Secondary A new long span solution utilizing a truss purlin will be available. VP Wide Bay will still be offered, for a limited time. End seat depth of 8½ with an optional 2½ Two truss purlin depths available 20½ and 29½ (default being 29½ ) Bottom chord building bracing system only Rake beam and primary frames will be designed with depths to accommodate bottom chord bracing. Available from BlueScope Buildings Manufacturing in Monterrey, Mexico or Laurinburg, NC. 37
Secondary Truss Purlin VPCommand Screen 38
Trussed Purlin Secondary 39
Bar Joist 40
Flange Brace at Bar Joist 41
Wall Secondary / Larger Bays Soldier Column A Soldier Column is used to reduce the span of the sidewall girts with larger bays ( 30-0 0 +). 42
Wall Secondary Soldier Column 43
Soldier Column with Purlins 44
Soldier Column with Bar Joist 45
Soldier Column with WBTP 46
Secondary Framing Wall 47
Wall Secondary Framing B L Eave Height 8 1/2 Sidewall Outset Girt Condition 1-0 Building Width 48
Secondary Girt Bracing Straps For discrete bracing of wall secondary in long bays or when wall material is not furnished by VP girt strapping will be used. 49 49
Wall Secondary Framing Continuous Span Outset Girts Girts lap at frame connections Stronger, may decrease cost 50
Secondary Simple Span Outset Girts Do not lap adjacent girts 51
Secondary Simple Span Outset Girts- Nested Note: Wall fastener pattern will be staggered Do not lap adjacent girts 52
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AB Layout at Corner (Outset/Outset 7 & 8 ½ ) 54
Wall Secondary Framing Simple Span Inset Girts 1 5/8 standard Inset (shown) Offset dimension may vary Inset girts must be simple span 8 ½ and 10 are notched; 7 and 11 are stopped short of flange 55
Secondary 7 & 11 ½ Inset
Inset Girts 57
Wall Secondary Framing B L Eave Height 1 5/8 Sidewall Inset Girt Condition 5 1/8 Building Width 58
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Wall Secondary Framing B L Eave Height Sidewall Flush Girt Condition 4 Building Width 60
Wall Secondary Framing Secondary offset is the distance from outside flange of girt (Building Line) to the outside flange of the Primary Framing Member 61
Extended Secondary Clips 62
Wall Secondary Framing 1-0 B L C L Purlin 7 and 8 ½ Girts have 1 0 BL to CL 10 and 11 ½ Girts have 1 3 BL to CL 8 1/2 Outset Endwall 1-0 Building Length 63
Outset Endwall 1-0 location 1-0 B L C L Purlin 8 1/2 Outset Endwall 1-0 Building Length 64
Wall Secondary Framing B L 6 C L Purlin Inset Endwall 1 5/8 5 1/8 Building Length 65
AB Layout at Endpost (Inset) 66
Wall Secondary Framing B L C L 6 Purlin Flush Endwall 4 Building Length 67
Wall Secondary Framing Panel Rib & Vee Rib Girt Spacings Standard Spacing Varies 5-0 5-0 7-6 Zee 68
Typical Girt Spacings 69
Wall Secondary Framing Panel Rib & Vee Rib Girt Spacings Additional girt may be required due to wind load. Varies 5-0 5-0 3-6 4-0 70
Additional Girt Corner Zone Field Edge Zone 71
Corner Zone - Additional Secondary 72
Secondary Mark Numbers 74
Framed Openings 12 minimum from CL of column or endpost to inside face of framed opening 75
Framed Openings 12 minimum between framed openings in the same bay 76
Framed Openings 24 minimum from header to eave 77
Framed Openings 28 1/2 clear on at least one side of a column for flange braces 78
Secondary Tips Continuous spanning members are usually most economical Panel Rib roof is not allowed on Wide Bay Trussed Purlins or Bar Joists 79
Secondary Tips Endbay dimension is most effective at approx. 85% of interior bay Verify if flange bracing allowed with liner panel 80
Secondary Tips 35-40 bays compare wide bay trussed purlins (WBTP) and 11 ½ purlins 40 60 bays compare WBTP and bar joists 60 bays use bar joists Freight is a consideration with WBTP 81
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