Attachment 5 - Pictures of John Day Tower.pdf
PDF 1 MB Posted
- Attached to
- Central Oregon Helibase Rappel Towers
- Solicitation number
- 1240BH23R0016
About this file
This document contains pictures and specifications for two new rappel towers to be constructed at the Central Oregon Helibase. The Forest Service is seeking a design firm to create plans for two towers that will mimic the existing John Day Rappel Tower design with some modifications. The new towers will each have two extended simulators like the one circled in red in Picture 2, and will remove the mid-height simulator circled in blue to create an observation deck. The roof will be covered and one foot higher than the roof in Picture 3 to allow for head clearance. Additional details provided include specifications for guardrails, rope anchor points, helicopter skids, and obstruction lighting to comply with FAA regulations. The related solicitation is from the USDA Forest Service Pacific Northwest Region for the construction of the Central Oregon Helibase Rappel Towers, with a submission deadline of April 14, 2023.
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USDA Forest Service John Day Rappel Tower Pictures
01/2023 Rappel Tower Page 1 of 7
PICTURES
Picture 1 – Shows the John Day Rappel Tower. New design for two (2) Rappel Towers at the
Central Oregon Helibase shall mimic this design with changes noted in this SOW.
01/2023 Rappel Tower Page 2 of 7
Picture 2 – Shows the three simulators on the John Day Rappel Tower circled in green, red, and blue. New design shall remove mid height simulator (circled in blue) and create a viewing platform in that area. New design shall have two upper simulators, and both shall be the same length as the extended simulator (circled in red).
01/2023 Rappel Tower Page 3 of 7
Picture 3 – Shows the extended simulator (circled in red in Picture 2). There will be two (2) similar extended simulators in the new tower design. New design shall use a similar roof structure, but new design shall have a covered roof. New roof shall be one foot higher than roof shown in this picture. Design firm shall accommodate room in roof for head clearance as it relates to Rappelling operations.
01/2023 Rappel Tower Page 4 of 7
Picture 4 – Shows the removeable grate and second area to attach skids which shall be designed for new simulators. This is to accommodate different helicopter sizes.
Picture 5‐ Guardrail along stairs and all other areas shall be raised by 12”.
01/2023 Rappel Tower Page 5 of 7
Picture 6 – Shows rope anchor point for John Day tower and simulator door. A new modular anchor point is to be designed in addition to current anchor point (circled in blue) that can be removed and adjusted horizontally and vertically. Modular anchor point should be located outside sliding simulator door. Meetings shall be held with design firm for anchor points and helicopter skids.
01/2023 Rappel Tower Page 6 of 7
Picture 7 – Attachable helicopter skids shall be designed according to Bell 205 A++ with high skid gear helicopter (See ENCL 2 for more measurements and pictures of skids). All steps and I‐ beams in rappelling areas should have rounded edges to prevent abrasion of rope. Rounded edge is shown in lowest skid of picture below.
01/2023 Rappel Tower Page 7 of 7
Picture 8 – Distance in red to be extended by 6’ in new design.
Picture 9 – Obstruction lights shall comply with FAA regulations.
File details come from the government source that posted it. Updated .