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3G Modular Access System Assembly Manual Page 48 of 77

5. CLOSURES

Closures fill the space between ramp handrails and platform posts. Like the ramp and platform handrails, they

are available in Two-Line and Vertical Pickets. As a standard, the closures come with components that require

the ramp to be mounted to one side or the other of a platform, but the ramp can also be centered or mounted

in any location on a platform side except when using the Vertical Picket Closure (refer to SECTION 5.6). When

centering the ramp or mounting in a location other than the side, a second Two-Line Closure must be ordered

and is installed in the same manner as described below. When mounting to the side, the ramp handrail post

should be positioned 1-1/2” (minimum) to 2” from the inside of the platform post. For all closures, the

installation of the top rail is the same. Complete steps in this section to install the top rail. For the Two-Line,

complete steps 5.4.9 through 5.4.15 to install the curb and SECTION 5.5 to install the lower rail. If installing a

Vertical Picket Closure, skip to SECTION 5.6 after installing the top rail.

5.1. If installing a closure on a platform in the “straight” configuration, the 2” x 2” angle post will already be

in place; skip to step 5.4.

5.2. If installing on a platform in the “turn” configuration, install the 2” x 2” angle post not attached to a

platform handrail in the open platform corner pocket (FIG. 5.1). Align the bottom of the post with the

bottom of the corner pocket and tighten the set screws securely.

5.3. Install an angle cap on top of the handrail post (FIG. 5.1). Use construction adhesive to bond the cap

in place.

5.4. TOP RAIL AND CURB

5.4.1. Install the top rail, the rail connecting the ramp handrail to the platform post.

5.4.2.

This procedure is the same regardless of the style of closure. Insert an adjustable elbow

in the ramp handrail. Loosen the elbow assembly screw and position the round portion of

the adjustable elbow so it is aligned with the upper hole in the angle post and the face is

parallel to the post. Measure the gap between the face and the post (FIG. 5.2).

FIG. 5.1

FIG. 5.2