What is the main advantage of the 1-inch raised frame?

The 1-inch raised steel frame reinforces the rigidity of the plate, preventing bowing under heavy loads. It also allows for easier handling by providing finger clearance underneath the plate for lifting, though we strongly recommend using dollies due to the weight.

Does this base plate provide enough ballast for outdoor use?

At 249 lbs, the EVT12S-BP48SR1 provides significant self-weight ballast. However, for outdoor structures exposed to wind, a structural engineer must calculate if additional ballast (sandbags or water tanks) is required to prevent overturning.

Is this plate compatible with 12-inch box truss?

Yes. This base plate is drilled to accept standard 12x12 plated truss (like the EVT12S series). It includes the necessary connecting hardware to bolt the truss directly to the center of the plate.

How should this base plate be transported?

Due to its extreme weight (249 lbs), this base plate should never be lifted by a single person. We recommend transporting it on a specialized base plate cart or dolly. Always wear steel-toed boots when handling heavy steel bases.

48" Truss Base Plate – 9mm Thick Q235 Steel, 1" Raised Frame, Pipe Flange – Built for EVT12S, EVT20S & EVT290S Systems

Extra-Heavy-Duty Steel Truss Ground Support

48 x 48 Inch Steel Truss Base Plate.
249 lb Ground-Support Plate for EVT12S, EVT20S, and EVT290S Systems.

The EVT12S-BP48SR1 is a 48 x 48 inch extra-heavy-duty steel truss base plate for specified EVT12S, EVT20S, and EVT290S truss applications. It combines a Q235 steel plate, 9 mm slab thickness, 1 inch raised frame, matte black powder-coat finish, universal slot design, center flange for 1.5 inch Schedule 40 pipe, and a documented 249 lb weight. The plate is a ground-support component; it does not independently determine final structure stability, ballast, anchoring, wind suitability, tower height, or allowable system loading.

Base Plate Facts

Model / SKUEVT12S-BP48SR1

Overall Footprint48 x 48 in / 1,219 x 1,219 mm

MaterialQ235 High-Strength Steel

Plate Thickness0.35 in / 9 mm

Raised Frame1 in Welded Frame

Documented Weight249 lb / 113 kg

48 x 48 inSquare Steel Footprint

249 lbDocumented Base Plate Weight

9 mmSteel Plate Thickness

1 inRaised Welded Frame

1.5 inSchedule 40 Pipe Flange

Product Overview

A 48 Inch Steel Ground Plate for Demanding Truss-Support Layouts.

The EVT12S-BP48SR1 is a 48 x 48 inch matte black steel base plate designed for ground-supported truss applications involving EVT12S, EVT20S, and EVT290S systems. Its documented mass, square footprint, 9 mm steel slab, and raised welded frame provide a substantial foundation component for planned builds. Determine the final connection method, installed structure, ballast, anchors, bracing, and site controls for the complete project.

48 x 48 Inch Footprint

A 1,219 x 1,219 mm square base-plate layout for ground-support and floor-layout planning.

249 lb Steel Plate

The product source documents a 249 lb / approximately 113 kg plate weight; use planned mechanical assistance or a team lift.

Universal Slot Design

Slot configuration supports the documented compatibility context for plated and conical truss connection approaches.

Matte Black Finish

A matte black powder-coat surface for a dark, low-reflective visual finish in production and event environments.

Steel Construction

Q235 Steel, a 9 mm Slab, and a 1 Inch Raised Welded Frame.

The BP48SR1 uses Q235 high-strength steel with a documented 0.35 inch / 9 mm plate thickness and a 1 inch raised frame. The raised frame is described as increasing plate rigidity and creating clearance underneath for handling. Inspect the plate, frame, welds, slots, flange, handles, and finish before each use; remove damaged components from service.

Q235 Steel Plate

Industrial steel construction for the documented 48 x 48 inch ground-support plate format.

9 mm Thickness

A 0.35 inch / 9 mm steel slab forms the documented main plate section.

1 Inch Raised Frame

Welded frame construction adds rigidity and provides clearance beneath the plate for planned handling.

Four Carry Handles

Four integrated laser-cut handles aid positioning but do not eliminate the need for proper lifting equipment or team handling.

Truss Compatibility

Specified for EVT12S, EVT20S, and EVT290S Truss Systems.

The product source lists compatibility with EVT12S 12 inch plated bolt truss, EVT20S 20.5 inch plated bolt truss, and EVT290S 12 inch conical truss. Each connection type requires the proper mounting approach, selected hardware, fit confirmation, secure engagement, and final review for the intended assembly. Do not assume a suitable connection based on nominal truss dimensions alone.

EVT12S Plated Truss

For the documented EVT12S 12 inch plated bolt-truss context, confirm appropriate bolts, slots, hardware, and torque requirements.

EVT20S Plated Truss

For the documented EVT20S 20.5 inch plated bolt-truss context, confirm the selected mounting arrangement and hardware before assembly.

EVT290S Conical Truss

Conical-truss mounting may require suitable half-couplers or spigots with studs that engage the plate slots; confirm the actual connection method.

Verify Before Use

Confirm alignment, hardware type, fit, fastener engagement, torque, load path, and the completed structure design before installation.

Heavy-Plate Handling

249 lb Requires a Planned Movement and Placement Method.

The product source identifies this as a critical heavy-lift item. Do not attempt to lift the 249 lb base plate alone. Plan the route, floor condition, crew, hand placement, pinch-point control, and equipment before moving it. A multi-person team lift or mechanical-assistance method such as a dedicated base-plate cart, dolly, or forklift may be appropriate for the work area and task.

Do Not Lift Alone

The documented plate weight is 249 lb; one-person lifting is not appropriate.

Plan the Move

Identify the route, floor condition, set-down location, crew roles, hand-clearance points, and required equipment before handling.

Use Suitable Equipment

Use a base-plate cart, dolly, forklift, or another approved method when appropriate to the plate, venue, and movement path.

Protect Personnel

Use trained personnel and appropriate protective equipment; control pinch, crush, trip, and dropped-load hazards throughout placement.

Center Accessory Flange

A Center Flange for 1.5 Inch Schedule 40 Pipe.

The plate includes a center flange described for 1.5 inch Schedule 40 pipe, approximately 1.90 inches outside diameter. Confirm the actual upright pipe dimensions, mounting method, fit, hardware, accessories, applied load, and structural requirements before using the flange as part of a completed assembly.

1.5 Inch Schedule 40 Context

The documented flange interface is intended for 1.5 inch Schedule 40 pipe, approximately 1.90 inches outside diameter.

Accessory Mounting

Use the center flange only with a compatible, reviewed connection method and a complete support arrangement appropriate for the applied accessory load.

Confirm Pipe Sizing

Verify the pipe OD and all mating components; do not assume fit from nominal pipe naming alone.

Inspect the Interface

Inspect flange welds, mounting hardware, pipe condition, and engagement before assembly and during use as appropriate.

Specifications

EVT12S-BP48SR1 Product Reference.

Identity

Product Record

Model / SKUEVT12S-BP48SR1

BrandEvolve Truss

Product TypeExtra-Heavy-Duty Universal Steel Truss Base Plate

FinishMatte Black Powder Coat

Dimensions

Plate Geometry

Overall Dimensions48 x 48 in / 1,219 x 1,219 mm

Plate Thickness0.35 in / 9 mm

Overall Height1.37 in

Raised Frame1 in Welded Raised Frame

Weight249 lb / approximately 113 kg

Construction

Plate Features

MaterialQ235 High-Strength Steel

Handles4 Integrated Laser-Cut Carry Handles

Connection LayoutUniversal Slot Design

Center Flange1.5 in Schedule 40 Pipe / Approx. 1.90 in OD

Compatibility

Documented System Context

Plated Bolt TrussEVT12S and EVT20S

Conical TrussEVT290S

Mounting ContextListed with Universal Mount Connecting Hardware

3D ModelGLB Model Listed

Installation Checks

Assess the Surface, Connection, and Complete Stability Plan.

This base plate is one part of a ground-supported truss structure. Installation requires an appropriate bearing surface, safe handling plan, verified mounting interface, correct hardware, secure attachment, plumb alignment, controlled loads, and every supplementary ballast, anchoring, bracing, or barrier measure required for the complete project. These checks do not replace project-specific engineering review.

01 — Verify the Surface

Confirm the bearing surface is level, stable, clear, and appropriate for the 249 lb plate plus the full installed-structure load.

02 — Plan Safe Placement

Use the planned crew and movement equipment to position the plate without exposing personnel to uncontrolled lift, crush, or pinch hazards.

03 — Inspect the Plate

Inspect flatness, plate condition, frame, welds, slots, flange, handles, coating, and selected connection components before use.

04 — Confirm the Interface

Confirm the proper bolts, couplers, spigots, studs, washers, nuts, engagement, and tightening requirements for the actual truss system.

05 — Align and Secure

Install and secure the approved interface, then verify that the upright and completed structure are aligned as required by the design.

06 — Add Required Controls

Install specified ballast, anchors, guying, bracing, barriers, or other site and stability measures required by the complete plan.

Safety and Engineering

A Heavy Base Plate Does Not Replace Complete Structural Review.

The 249 lb documented plate weight and 48 x 48 inch footprint are product characteristics, not a universal determination of safe structure height, ballast requirements, anchor requirements, wind resistance, lateral capacity, or final stability. Evaluate the entire system, including the truss, connection method, applied loads, center of gravity, footprint orientation, floor condition, public access, impact risk, weather, ballast, bracing, anchoring, and local requirements.

Do not attempt one-person lifting. Use a properly planned team lift or suitable mechanical assistance for the 249 lb plate.

A qualified professional must determine whether the plate, interface, ballast, anchoring, bracing, and support arrangement are suitable for the specific structure and site.

Outdoor structures and structures exposed to wind require project-specific review; additional ballast or stabilization may be required.

Do not use a plate with damaged steel, welds, slots, flange, frame, handles, or mounting interfaces. Inspect before each use.

Use barriers, covers, markings, and other risk controls wherever the plate creates a trip, collision, or public-access hazard.

48 Inch Steel Truss Base Plate Questions

EVT12S-BP48SR1 Frequently Asked Questions.

Which truss systems does the BP48SR1 support?

The product source lists EVT12S 12 inch plated bolt truss, EVT20S 20.5 inch plated bolt truss, and EVT290S 12 inch conical truss. Confirm the specific connection method, fit, and hardware for the actual truss system before installation.

Can one person move the plate using its integrated handles?

No. The documented plate weight is 249 lb. The integrated handles assist positioning but are not a basis for one-person lifting. Use a planned team lift or appropriate movement equipment.

Does the 249 lb base plate eliminate the need for additional ballast outdoors?

No. Outdoor structures must be evaluated for wind, geometry, height, loads, anchoring, floor or ground condition, and the full stability arrangement. Additional ballast or stabilization may be required.

What pipe fits the center flange?

The source identifies the center flange for 1.5 inch Schedule 40 pipe, approximately 1.90 inches outside diameter. Confirm actual pipe dimensions, hardware, and the full accessory-support design before use.

Planning a 48 Inch Steel Truss Base Plate Installation?

Contact us for compatibility review, connection-hardware planning, 3D-model resources, handling coordination, and project-specific truss ground-support guidance.

Structural Solutions, Unmatched Innovation

EVT12S-BP48SR1

EVT12S-BP48SR1 — 48x48 Steel Base Plate – Extra-Large Universal Truss Base

48 x 48 Inch Steel Truss Base Plate.249 lb Ground-Support Plate for EVT12S, EVT20S, and EVT290S Systems.