Coast Guard Academy First Class Cadets Amy Kimura, Douglas Brown, Andrew Campbell, Nicholas Hubner pose for a photo.
U.S. Coast Guard photo by Petty Officer 3rd Class Nicole Foguth.
Cape Spencer helipad and Eldred Rock helipad, built in the 1960s, serve as the only landing sites to service their respective adjoining lighthouses and electronic/communications equipment in Juneau, Alaska. Eldred Rock, located 58 miles north of Juneau on a 3 acre island in Lynn Channel, consists of a 70-by-70-foot octagon structure. Eldred Rock helipad has organic growth on the decking, cantilevered joists, cracked beams and corrosion to the concrete footings. Cape Spencer, located 58 miles west of Juneau on a three-quarter acre island in the Pacific Ocean, has a 50-by-50-foot square helipad. Cape Spencer helipad’s beams are over deflected and its decking and joists are over shear capacity. Due to their current deteriorated and unsafe conditions, CEU Juneau has requested possible solutions to fix these issues. Through site visits and previous studies, a total redesign of Eldred Rock and a partial renovations of Cape Spencer were formulated using analysis tools like RISA 2D and Excel using the American Wood Council’s National Design Standard and Federal Aviation Administration helipad standards. Through design analyses, cost estimates and decision matrices, a 50-by-50-foot wooden octagon helipad replacement is recommended for Eldred Rock; $232,000. The recommended rehabilitation of Cape Spencer is a renewal of the helipad’s beams, joists and decking with sistered 8-by-14-inch beams, doubled 3-by-12-inch joists, and 4.5-by-12-inch decking; $239,000.
| Date Taken: | 03.22.2018 |
| Date Posted: | 05.09.2018 12:32 |
| Photo ID: | 4372115 |
| VIRIN: | 180322-G-XO367-0001 |
| Resolution: | 3582x2768 |
| Size: | 694.3 KB |
| Location: | NEW LONDON, CONNECTICUT, US |
| Web Views: | 80 |
| Downloads: | 14 |
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