GLCA 318882 Bullfrog

National Park Service Glen Canyon National Recreation Area – Bullfrog Launch Ramp Project Basis of Design January 20, 2023 Prepared by: Jacobs Government Services Company Greenwood Village, CO Contract No. 140P2021D0007 Task Order No. 140P2021F0391 -- 1 of 44 -- GLCA Launch Ramps Design Criteria Page 2 January 20, 2022 JACOBS GOVERNMENT SERVICES COMPANY GLCA Launch Ramps Design Criteria Date: January 20, 2023 I. Introduction In partnership with the Park, and input from other stakeholders during early listening sessions, Jacobs developed site specific design criteria to address project needs for the launch ramp concept designs. II. Design Standards 1. Codes a. Local Building Codes for Arizona and Utah i. 2018 International Building Code (IBC 2018) ii. Building Code requirements for Structural Concrete (ACI 318-14) b. Launch Ramp Materials i. Concrete – Building Code requirements for Structural Concrete (ACI 318-14) ii. Steel – American institute of Steel Construction Steel Manual (AISC-14) c. Ramp and Marina i. California Boat Launching Facilities – Design Handbook ii. UFC 4-152-07 Design: Small Craft Berthing Facilities d. Roads i. AASHTO Green Book (GDHS 2018) ii. Park Road Standards – National Park Service 1984 e. Water System i. Kane County Standard Specifications and Drawing Details for Design and Construction (2014) ii. Utah Division of Drinking Water, Series 500 Rules, Drinking Water Facility Construction Design and Operation (2014) iii. American Public Works Association (APWA) iv. American Water Works Association (AWWA) v. 2018 International Building Code (IBC 2018) vi. International Fire Code (2021) f. Sanitary Sewer System i. Kane County Standard Specifications and Drawing Details for Design and Construction (2014) ii. Uniform Plumbing Code (UPC 2021) iii. 2018 International Building Code (IBC 2018) g. Electrical and Communications Systems i. National Electrical Safety Code (2023) ii. National Electrical Code (2020) -- 2 of 44 -- GLCA Launch Ramps Design Criteria Page 3 January 20, 2022 JACOBS GOVERNMENT SERVICES COMPANY h. ITA/EIA Standards 2. Loads (Dead, Live, Snow and Wind) a. Seismic is not considered since for a slab on ground (without piles), the slab will move with the ground and there is not a structure period associated with it (different from pile-supported slab). b. However, seismic shear may need to be considered for the grade beams; further work required to confirm. c. Load combinations (per Table 5.3.1 of ACI 318-14) III. Environmental Conditions 1. Water level a. Current site water level is 3535 ft. (as of January 10, 2022) b. Existing ramps were designed for a water level between 3540 to 3580 ft. c. Design low water level for this project is 3450 ft. 2. Precipitation a. ASCE 7-16 Ice/Snow 3. Wind a. ASCE 7-16 Basic Wind Speed 120 mph based on a Risk Category of III or IV b. Wind is applied to the side of the large houseboat (described under the Vessels section for each site), which creates an overturning moment. This overturning moment is applied to the ramp as a compression load on the leeward side. 4. Atmospheric Conditions a. Atmospheric Conditions are derived from the following NOAA stations: i. BULLFROG BASIN, UT US – ID GHCND:USC00421020 ii. Page, Page Municipal Airport (KPGA) IV. Bullfrog Site Design Criteria 1. Existing Public Ramp Geometry a. Existing Ramp– (Reference 3128 in NPS eTic Data). Main Boat ramp – 124 feet by 1,250 feet (running surface 110 feet wide), slope 9%. Low Water Boat ramp – 60 feet by 720 feet, slope 5.56%. b. Low Water Ramp Extension – ramp extended and expanded to be 150 feet by feet by 1,165 feet (reference 60024 in NPS eTic Data). Slope 10.5%. 2. New Ramp Location Siting and Geometry a. Bullfrog bay has very low water, siting will have to be closer to the main river channel within the bay or over to Stanton Creek site. b. Desired ramp width 150 feet, 5- to 30-foot-wide ramp lanes. c. Desired ramp slope is 10.5% in order to put in and take out larger houseboats. d. Top of slab elevation at bottom of ramp will be 3445 ft. and have a -- 3 of 44 -- GLCA Launch Ramps Design Criteria Page 4 January 20, 2022 JACOBS GOVERNMENT SERVICES COMPANY minimum of 5 ft of water. e. Two options have been considered: i. Combined high and low water ramp to go from Elevation 3700 to 3450. ii. Separate high and low water ramps. From Elevation 3700 to 3580 (existing ramp) and 3580 to 3450 (new ramp). 3. Vessels a. UDOT Ferry – Approximately 155 feet long, 50 feet wide and 8 feet draft. b. Large Houseboats – Up to 125 feet long, 22 feet wide, maximum of 5 feet draft, registered 250 Tons of displacement and 100 Tons of actual displacement as determined through engineering judgment. c. Small Recreational Craft 4. Vehicles a. Vehicle Types and Loads – Some of the large houseboats require multiple trucks or even tractor trailers, loading assumptions: i. Loading from large houseboat vessels is spread over enough axles to make it road legal ii. Loading assumed in structural model is a variation on HS-20 loading condition with a houseboat trailer attached. This critical loading condition consists of a 6-axle vehicle with a 16-kip front axle (Axle 1), followed by a 32-kip axle (Axle 2) set back 14 feet on center from Axle 1, followed by four 32-kip tandem axles (Axles 3 through 6) with the first setback 30 feet on center from Axle 2 and each subsequent tandem axle spaced 4 feet on center axle to axle. 5. Gangways a. CSA 46 Boarding Floats and Gangways (Reference 70383 in NPS eTic Data) i. Loading floats 114-foot-long, Gangway 40-foot-long. b. Ramp utilizes UDOT Ferry Gangways/Floats – Wedges are 22 feet wide 6. Marina a. Requested minimum water depth – 20 feet, but it has been stated that the concessionaire could operate in 10 feet of water, or even as little as 6 feet of water as an extreme scenario. b. The intent of the concept design has been to replace the marina in-kind. Jacobs has proposed a relocation location for each of the two Bullfrog concept…