Discrepancies between drawings and field measurements at kickoff

[2010FRC0058]

Drawing item GE-10043-01 has a dimension of 16 1/2 x 32 1/2. This dimension would place the tunnel inside height at 16.5 inches rather than the 18inches in section 6.2.4 of the manual and the 18in measured at the Manchester kickoff. In addition, item GE-10043-07 places the top of the platfom at 19 1/4inches rather than the 20 inches listed in section 6.2.4 of the manual and measured at the Manchester kickoff.

Please provide the correct dimensions for the tunnel game element. Elements GE-10043-01, GE-10043-03, GE10043-05 and GE-10043-07 would all need to change to be compliant to the manual and measured dimensions.

[2010FRC0360]

Apologies if I am simply reading things wrong.

The manual states clearly that the tunnel will have a height of 18 inches (Section 6.2.4) but the practice field dimensions (and apparently the official field dimensions) do not add up to 18 inches. The practice field is below 17 inches as drawn.

We are operating on the assumption that the height will be 18 inches since that hasn't changed in the last two updates.

Thank you

Eric Stokely
Team 360

[2010FRC0058]

Drawing item GE-10043-01 has a dimension of 16 1/2 x 32 1/2. This dimension would place the tunnel inside height at 16.5 inches rather than the 18inches in section 6.2.4 of the manual and the 18in measured at the Manchester kickoff. In addition, item GE-10043-07 places the top of the platfom at 19 1/4inches rather than the 20 inches listed in section 6.2.4 of the manual and measured at the Manchester kickoff.

Please provide the correct dimensions for the tunnel game element. Elements GE-10043-01, GE-10043-03, GE10043-05 and GE-10043-07 would all need to change to be compliant to the manual and measured dimensions.

[GDC]

Below are details about the dimensions of the tunnel and platform height.

For the height of the tunnel roof:

Nominal dimensions (height of the tunnel roof from the bottom carpet, i.e. floor):

* 1¾” (baseplate & Uchannel)
* 16½” (inside wall)
* ⅛” (Velcro, one side only)
* Total: 18 3/8” = height of the top of the tunnel from bottom carpet

Nominal dimensions (height of the tunnel roof from the top carpet - because the top carpet sits on top of the baseplate/plywood and offsets some of the height of the uchannel):

* 1¼” (Uchannel)
* 16½” (inside wall)
* ⅛” (Velcro, one side only)
* Total: 17 7/8” = height of the top of the tunnel from top carpet (from top carpet on baseplate)

Actual dimensions measured by FRC Engineering:

* 17 7/8” from carpet over the baseplate (pic w/ red border)
* 17½” from carpet over the plywood floor protector, which is ¼” thicker than the baseplate (pic w/ blue border)

For the height of the platform:

Nominal dimensions (height of the platform from the original carpet layer, i.e. FLOOR):

* 1¾” (baseplate & Uchannel)
* 16½” (inside wall)
* ½” (inside roof)
* 1½” (horizontal stiffener)
* ½” (outside roof)
* ⅛” (logo plate)
* ⅛” (Velcro, hook & loop)
* Total: 21” = height of platform from carpet (carpet has plywood or aluminum below it)

Nominal dimensions (height of the platform from the top carpet - because the top carpet sits on top of the baseplate/plywood and offsets some of the height of the uchannel):

* 1¼” (remaining Uchannel)
* 16½” (inside wall)
* ½” (inside roof)
* 1½” (horizontal stiffener)
* ½” (outside roof)
* ⅛” (logo plate)
* ⅛” (Velcro, hook & loop)
* Total: 20½” = height of platform from carpet (carpet has aluminum below it)

Actual dimensions measured by FRC Engineering:

* 20½” from carpet over the baseplate
* 20⅛” from carpet over the plywood floor protector.

Please see Team Update #4 for information about edits to the Game Manual.

[2010FRC1359]

We just finished building tunnels last night and came to the realization the the inner height dimension is 16.5 inches. As far as I can tell the tunnel object does not rest on top of another element that would increase the internal clearance. In the rules it states that the tunnel is 18" high. With a bumper zone that extends to 16 inches, it will be difficult to build a robot that can fit under the tunnel and not be so flat that a ball will rest on top of the robot violating the carrying rule. Is there an error in the tunnel dimensions? Does the tunnel rest on another object that I have missed?