Steel Joists

Revision 5 · SynC Standards Team — Specifier, SynC (SynC Platform Team / Platform Standards) ✓ Official · Jun 11, 2026 +12 −14

Migrate datasheet deferrals to drawing_ref + default: deferred
Showing changes from Rev 4 to Rev 5 in Steel Joists.
Tag changes −Framing−Joists−Steel−Structural
---
title: Steel Joists
343 unchanged lines
type: text
drawing_ref: true
default: "As indicated on structural drawings"
+default: deferred
```
118 unchanged lines
- "7-1/2 in. (LH-series deeper than 36 in., manufacturer's standard)"
- "Per manufacturer's standard for the specified designation"
- "Custom — as indicated on structural drawings"
default: "Per manufacturer's standard for the specified designation"
```
45 unchanged lines
label: Camber Magnitude
type: select
drawing_ref: true
+drawing_ref: "structural drawings and joist schedule"
options:
- "SJI standard (L^2/2,500 per ANSI/SJI 100)"
- "Increased camber to fully offset dead load deflection (per structural drawings)"
- "Reduced or no camber (per structural drawings, low-slope roof or critical finish)"
- "As indicated on structural drawings and joist schedule"
default: "SJI standard (L^2/2,500 per ANSI/SJI 100)"
```
46 unchanged lines
label: Bridging Spacing
type: select
+drawing_ref: "joist placement plan"
options:
- "Per ANSI/SJI 100 Table 5.5-1 (varies by joist designation and span)"
- "As indicated on joist placement plan"
default: "Per ANSI/SJI 100 Table 5.5-1 (varies by joist designation and span)"
```
9 unchanged lines
label: Bridging End Anchor Type
type: select
+drawing_ref: "manufacturer's placement plan"
options:
- "Welded to steel end wall framing or bond beam plate"
- "Bolted to wall-cast anchor with hex head bolt"
- "Expansion or adhesive anchor into concrete bond beam"
- "Per manufacturer's placement plan and structural drawings"
default: "Per manufacturer's placement plan and structural drawings"
+default: deferred
```
43 unchanged lines
label: Header Type
type: select
+drawing_ref: "structural drawings"
options:
- "Joist header — short SJI joist installed perpendicular to typical joists"
- "Rolled shape header — wide-flange or channel framed between adjacent joists"
- "Pair of joists at opening edge for added capacity"
- "Per structural drawings"
default: "Per structural drawings"
+default: deferred
```
115 unchanged lines
label: Erection Sequence
type: select
+drawing_ref: "approved erection plan"
options:
- "Sequential bay-by-bay with all bridging installed before next bay begins"
- "Joist setting in parallel with deferred bridging — only where permitted by erection plan"
- "Per approved erection plan"
default: "Per approved erection plan"
+default: deferred
```
167 unchanged lines
label: Fire-Resistance Rating
type: select
+drawing_ref: "structural drawings"
options:
- "Not rated"
- "1-hour rating — UL listed assembly per structural drawings"
- "2-hour rating — UL listed assembly per structural drawings"
- "3-hour rating — UL listed assembly per structural drawings"
- "Per UL Fire Resistance Directory listing on structural drawings"
default: "Not rated"
```
2 unchanged lines
label: UL Assembly Designation
type: text
drawing_ref: true
default: "As indicated on structural and architectural drawings"
+drawing_ref: "structural and architectural drawings"
+default: deferred
```
121 unchanged lines
## Field touch-up coatings are not covered by the shop coating warranty; touch-up performance is the responsibility of the Contractor or the painting subcontractor as applicable.

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