Where does the 1.5-foot section typically appear in a truss layout?

It most commonly fills the gap between a corner block and the nearest full-length straight section when the total run doesn't divide evenly into standard lengths. It also shows up as a short vertical column segment in compact tower builds, as a horizontal bridge between two closely spaced support points, and as a filler between the last long section and a rigging pick point in overhead grids.

Is the load capacity of a 1.5-foot section the same as a 5-foot or 10-foot section?

The section itself is built from the same 6061-T6 alloy with the same chord and brace geometry as every other EVT12S piece, but load capacity is determined by the total span length of the full truss run — not the individual section. A 1.5-foot section in the middle of a 30-foot span carries the load dictated by the 30-foot span rating, not its own standalone capacity. Always refer to the official EVT12S load tables for your specific total span. All configurations should be reviewed by a licensed structural engineer.

How should I inspect truss components before use?

Inspect the end plates, bolt holes, main chords, and diagonal bracing for cracks, dents, bends, or weld fractures before every use. Ensure all Grade 8 bolts are properly torqued to manufacturer specifications. Do not use any section with visible damage to the bracing or chord members. Remove any damaged component from service immediately.

EVT12S-1½FT — 1.5-Foot (18-Inch) Heavy-Duty Square Aluminum Truss Section for 12-Inch End-Plate Bolt Truss

EVT12S System Knowledge Center

One and One-Half Foot Aluminum Truss Section.
Adds an 18 Inch Intermediate Section Within an End-Plated Box Truss System.

The EVT12S-1½FT is an 18-inch aluminum end-plate truss section for adding an intermediate length within a 12-inch end-plated box truss system. It helps configure overall run dimensions when a standard section length is too long or too short. Allowable loading depends on the completed truss system, including its span, supports, connections, and applied loads.

Product Facts

Model / SKUEVT12S-1½FT

Product Type1.5 Foot Aluminum End-Plate Truss Section

Overall Size12 x 12 x 18 in

Section Length18 in / 1.5 ft / 457.2 mm

MaterialEN AW-6061-T6 Aluminum

FinishBrushed Aluminum

1.5 ftSection Length

12 × 12 inTruss Profile

50 mmMain Tubing

Listed WeightSee Specifications

4-BoltEnd-Plate Connection

Product Overview

An 18 Inch Intermediate Section for 12-Inch End-Plated Box Truss Systems.

The EVT12S-1½FT provides an 18-inch intermediate section for adding length within a 12-inch end-plated box truss system. The listed finish is brushed aluminum. Technical specifications identify 25 mm diagonal brace tubing; loading and connection requirements apply to the completed system.

18 Inch Section

Adds an 18-inch section between end-plated truss components.

Brace Tubing

Technical specifications list 25 mm diagonal brace tubing.

12 Inch Square Size

Overall dimensions: 12 x 12 x 18 in / 304.8 x 304.8 x 457.2 mm.

Bolt Connection

Uses end-plated nut-and-bolt hardware.

Application Uses

For 12-Inch End-Plated Box Truss Systems.

The 1.5-foot component may be considered where an 18-inch section is specified within a completed truss system. Potential applications include lighting grids, scenic structures, exhibit displays, broadcast sets, venue systems, touring equipment, and rental inventory. Supports, span, connections, and applied loads must be evaluated for the completed installation.

Lighting Grids

For end-plated truss grid systems requiring an 18-inch section.

Scenic Structures

For stage and scenic truss assemblies subject to complete-system review.

Broadcast Sets

For overhead grid systems where an 18-inch section is specified.

Trade Displays

For exhibit structures that call for an 18-inch section.

Rental Inventory

Adds an 18-inch option to truss inventory.

Included Hardware

Supplied with Hardware for One Four-Point Connection.

The source lists four Grade 8 bolts, four nuts, and four washers. Hardware finish may differ from the brushed aluminum truss-section finish. Confirm the fastener requirements at every actual joint, including bolt length, condition, engagement, and the manufacturer tightening procedure.

4 Grade 8 Bolts

Listed for the four-point end-plate connection.

4 Nuts

Listed with the supplied bolts.

4 Washers

Included in the listed hardware set.

Connection Count

Account for the hardware needed at each joint in the full system.

Technical Reference

EVT12S-1½FT Truss Section Specifications.

Identification

Product Details

Model / SKUEVT12S-1½FT

BrandEvolve Truss

Product Type1.5 Foot Heavy-Duty Square Aluminum End-Plate Truss Section

Warranty1-Year Limited Manufacturing-Defect Warranty

Dimensions

Overall Size

Width12 in / 304.8 mm

Height12 in / 304.8 mm

Depth / Length18 in / 1.5 ft / 457.2 mm

WeightNot listed in reliable structured product data

Material and Tubing

Construction

MaterialAluminum Alloy EN AW-6061-T6

Main Tubing1.96 in / 50 mm OD, 0.11 in / 3 mm Wall

Brace Tubing0.98 in / 25 mm OD, 0.11 in / 3 mm Wall

FinishBrushed Aluminum

Connection Context

System Interface

Connection TypeEnd-Plated Nut and Bolt

Included Hardware4 Grade 8 Bolts, Nuts, and Washers

CompatibilityStandard 12-Inch End-Plated Truss Systems

CertificationTÜV Certified

Fit NoticeExact fit with other systems is not guaranteed

System Compatibility

For Standard 12-Inch End-Plated Truss Systems. Verify Every Connection.

This section is identified for standard 12-inch end-plated truss systems. Exact fit with other systems is not guaranteed. Before combining components, verify end-plate dimensions and thickness, bolt-hole positions, chord alignment, hardware, fastener engagement, and completed-joint seating.

EVT12S

Designed for compatible EVT12S end-plate bolt truss components.

End Plates

Compare plate dimensions and bolt-hole positions.

Hardware

Confirm the appropriate fasteners and engagement.

Completed Joint

Inspect alignment and full seating before use.

Assembly Overview

Align the End Plates. Install and Check All Four Fasteners.

Assembly should be performed by personnel qualified for the truss system in accordance with applicable manufacturer requirements. This outline provides neither torque values nor installation approval.

01 — Inspect

Check tubing, diagonal bracing, welds, plates, holes, finish, and hardware for damage.

02 — Align

Bring compatible end plates together without forcing distorted parts.

03 — Install Hardware

Fit the specified fasteners at all four locations with adequate engagement.

04 — Tighten

Follow the applicable manufacturer fastener procedure.

05 — Check Seating

Confirm the required hardware and full plate seating.

06 — Inspect Before Service

Review the completed truss system and supports before loading.

Engineering Reference

Load-Span Reference for Completed EVT12S Truss Runs.

All truss loading calculations are based on a completed compatible 12 x 12 aluminum-truss run supported or suspended at both ends, under one stated static-load alternative. The values below do not rate an individual 1.5-foot section or connection. This component adds length and a bolted joint; it does not increase the completed system’s allowable capacity.

Allowable loading reference for the documented 12 x 12 aluminum-truss analysis.
Load Case	Unit	10 ft 3.05 m	20 ft 6.11 m	30 ft 9.14 m	40 ft 12.23 m
Uniformly Distributed Load	lb/ft	472	115	60	31
Deflection	in	0.21	0.65	1.63	2.68
Center Point Load	lb	2,710	1,206	580	272
Deflection	in	0.20	0.56	1.31	2.04
Third Point Loads	lb each	1,744	888	600	442
Deflection	in	0.32	0.68	1.48	2.62
Quarter Point Loads	lb each	1,110	633	428	308
Deflection	in	0.33	0.68	1.54	2.54

Load cases: CPL — one center load · TPL — two equal third-point loads · QPL — two equal quarter-point loads · UDL — load distributed over the complete span

Load-Span Assumptions and Project Review

Table assumptions: The reference evaluates unbraced truss configured as a simply supported beam. The primary analyzed spans were 10 ft, 20 ft, 30 ft, and 40 ft. If CPL, TPL, or QPL loading occurs at a truss connection, a minimum of two chords is assumed to support the vertical load.

Not included: Shock loads, dynamic loads, and resultant horizontal rigging forces, including forces from bridles or baskets. UDL applies only when the load is evenly distributed across the entire span. Published load cases are alternatives and are not additive.

Licensed structural-engineer review is required for every truss system. These values are general planning reference only and do not approve or rate an individual straight section, a completed lighting plot, a ground-support structure, a goal post, a tower, a start/finish arch, a suspended configuration, an outdoor installation, a mixed-component build, or any other assembled truss system. Confirm the complete configuration, supports, connections, span, applied loads, attachment points, rigging, ballast or anchorage, environmental conditions, and applicable code requirements with a licensed structural engineer before use.

Current documentation: Product specifications, included hardware, compatibility information, and availability are subject to change. Verify current product drawings, manufacturer instructions, connection hardware, and applicable engineering information before ordering, assembling, or using this product.

Safety and Engineering

A Truss Section Adds Length. It Does Not Increase Truss Capacity.

Allowable loading depends on the complete truss system, including span, supports, orientation, joints, suspension method, and applied loads. Suspended, load-bearing, dynamic-load, and complex applications require qualified structural or entertainment-rigging review. No stand-alone capacity value or torque value is provided here.

Inspect the truss section, diagonal braces, welds, plates, bolt holes, hardware, and connected truss before every use.

Remove any component with cracks, bends, elongated holes, plate deformation, damaged welds, or substantial finish damage from service.

Install and tighten all required fasteners using the applicable manufacturer procedure.

Do not support loads directly from connection points without approval for the complete truss system.

Verify connection interfaces and completed-system suitability before combining different systems.

Have a competent person perform a documented inspection at least annually and remove unsafe parts from service.

Truss Section Questions

EVT12S-1½FT Frequently Asked Questions.

What construction details are listed for the 1.5-foot section?

The technical specifications list 50 mm main tubing and 25 mm diagonal brace tubing. Allowable use and loading remain dependent on the completed truss system.

What hardware is included?

The listing identifies four Grade 8 bolts, four nuts, and four washers. Confirm the hardware needed at every connection in the completed system.

Can I combine it with other truss sections?

Additional compatible components may be considered, but every added joint needs its required hardware and the completed truss system must be reviewed for the intended use.

Does the 1.5-foot section have a separate load capacity?

No. Allowable loading depends on the complete system and its support and loading conditions. Use the documented load-span reference and obtain appropriate engineering review for the actual configuration.

Need a 1.5 Foot EVT12S Truss Section?

Contact us for truss section selection, listed compatibility information, product documentation, and quantity-quote support.

Structural Solutions, Unmatched Innovation

EVT12S-1½FT

EVT12S-1½FT — 1.5-Foot Truss Section – 12" x 12" Heavy-Duty Square Aluminum End-Plate Truss

One and One-Half Foot Aluminum Truss Section.Adds an 18 Inch Intermediate Section Within an End-Plated Box Truss System.