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Jamestown Community College ​hello my name is dinelli justiniano and I am lucky sevens project manager and structural engineer before presenting our proposal I would like to introduce my team pictured on the screen on the left is chris freeman our water engineer I am on his left and to my left is ben rogers AR geotechnical engineer followed by sinan kachchi our environmental engineer and last we have Daniel catchy our traffic engineer this proposal discusses an analysis of the site which is currently known as hewlett drive in san diego located to the west of the northern edge of san diego state university campus and proposes a solution for the construction of a football stadium in that site with a capacity of 50,000 event attendees this construction assumes the demolition of all developments currently existing on hewlett drive first Bend we'll discuss the existing site conditions the necessary earthwork and foundation system following that Danny will go over the traffic conditions in the nearby area and mitigation measures to address our projects influence on that traffic after that I will discuss the structure and its architectural basis of design following that Chris will discuss the site's hydrology and storm water solutions next sinann will discuss the environmental impacts and necessary mitigations I will conclude by giving a rough cost estimate comments on the project's feasibility and touch on the lessons we learned in this project hello this has been Rogers the geotechnical engineer for lucky 7 i'll be going over the existing conditions of the site our earth work and our structures foundation system on the screen you'll see the existing topography of the site to the north is the eight freeway and elevation of 200 feet relative to sea level to the south is Remington road at 400 feet relative to sea level we do not expect natural disasters aside from seismic loading to be a concern the site is not in a tsunami inundation zone has no history of landslides liquefaction and is above any nearby body's water of significance so seating will also not be a concern the biggest challenge for utilizing the site lies in the earth work necessary to provide the access discussed by a transportation engineer on the screen now you'll see the proposed topography of the site with the slab existing at an elevation of 313 feet in the structure backfilled 350 feet we will need to import approximately 1.8 million cubic yards to the site in addition to large amounts of cotton fill the contractor must ensure the soil is properly compacted utilizing nearby boring logs we surmise that the soil profile consists of three layers of sand on top the one foot thick top soil layer which overlays a three foot thick residual layer which in turn over lies a tertiary layer which extends to bedrock for the purposes of this project we assume that bedrock would not be encountered in our excavations the top two layers are incompetent and need to be removed from beneath all improvements the tertiary layer is however highly Compton and their bearing capacity will be accessed with our piles due to the large amounts of earth work and fragile slopes in the site we will need to minimize the vibrations caused by construction for this reason we will utilize cast-in-place concrete piles the competent soils and compacted fills and area should allow for relatively simple borings with no cave-ins the piles will be located under each column in the structure and extend for approximately 90 feet within the competence oil layer the bearing capacity of these piles will come entirely from this competent soil layer for more specific recommendations as well as soil parameter calculations please refer to the geotechnical report for sizing and calculations on dimensions please refer to the structural report thank you hello this is Daniel kachchi and I'm the traffic engineer of Lucky seven the analysis presented in this study assesses the potential impacts of the proposed football stadium project on the local transportation and circulation system the football stadium will accommodate 50,000 visitors ranging from college students alumni and San Diego residents with such a confined space allowed around the stadium with limited road access and intersections traffic congestion and mitigation will play an important role in the operations and functions with stadium and neighboring residents the college area community street system effectively links the community to other communities and to the regional transportation system as seen on the screen traffic in the college community linking both the neighborhoods and cities often heavy and is extensively used by people living other communities who go to school or work at the university or who use El Cajon Boulevard and college avenue as links between Interstate 8 and State Route 94 all these challenges were analyzed for an extensive traffic study and research a few of the mitigations that will be implemented for this project include restriping of college avenue or an additional third lane on fairmont avenue and could be found in the traffic study however the roads throughout the college community are not only the effect that attendees of the stadium will face as seen on the screen parking will be a struggle however through staging operations through SDSU police parking should not be an obstacle the addition of a new parking structure adjacent to parking structure for will provide an additional fifteen hundred parking spaces as well as 200 spaces in the stadium parking lot additionally the use of the new trolley station as seen on the screen will be constructed just north


of the stadium and will relieve congestion on the streets however it is up to the fans take advantage of this mode of transportation and utilize it to the fullest through the cooperation of SDSU students faculty community members and fans traffic in and out of the college community during events at the stadium can go smoothly thank you hello this is Denali justiniano and I am the structural engineer for lucky 7 I will be discussing the site plan structure its architectural basis of design and the structural design approach the proposed site plan is largely governed by the access needs as discussed earlier by our transportation engineer minimal entrances to the site will be used to increase security and monitor admittance once on-site spectators circulate around the stadium on an external concourse with access to multiple entrances to the interior of the stadium this will allow attendees to reach their seats while mitigating congestion because the site will require a large flat surface to accommodate both the stadium and accompanying parking lot orientation of the stadium will not greatly affect earth work as such it was decided to adopt a north-south orientation to provide the most natural glare protection for players the proposed site plan will be an oval as shown on the structure plan view on screen and will be designed for a capacity of approximately 50,000 people the stadium will consist of two tiers the stadium's first here below finished grade is concentric with the second and will accommodate 18,000 its walls will be designed to retain the surrounding grade the stadium second tier with a finished floor elevation of 37 feet above that of the first year will accommodate 32,000 people pedestrian access will be through the second tier the best material for the structure from a constructability and structural standpoint is reinforced concrete while it is more expensive than a steel frame the life span of concrete is much greater and there is little to no maintenance required making it cheaper in the long run precast panels will be used as they allow for shorter construction time and are cheaper than cast-in-place concrete to reinforce the concrete structural elements steel bars with deformed surfaces are used the deformed surface allows for an increased bond between steel and concrete these bars come in varying diameters and will be used as deemed necessary through design analysis on the screen you will see a representative cross-section of the stadium in order to analyze the structure it was broken up into individual components for this design the loads will be transferred from the precast lab to the girders the girders to the columns columns to foundation and finally foundation to soil these components were designed in accordance with ACI 318 and super imposed loads were determined in accordance with ASC e7 2005 calculations and details can be found in the structural report thank you hello my name is chris freeman and i am the water engineer for lucky 7 as part of my role for this project i analyzed the existing site hydrology conditions and the proposed site hydrology conditions to find out the drainage for both the existing and proposed site i also proposed a stormwater management system for the proposed site conditions which includes a drainage pipe and bios wells on the screen now is a visual of the existing site and the drainage basins created to find the area time of concentration in rainfall runoff for the purposes of this project the length of flow and feet was assumed to be linear feet and the slopes of the flow password assumed to be constant across the entire flow length the Hathaway formula was used to find the time of concentration the 100-year six hours storm precipitation was used to find the intensity and the rational method was used to find the peak discharge drainage basin one has an estimated area of ten point seven acres time of concentration of 22 minutes and the peak run off of 13.9 three cubic feet per second drainage basin too has an estimated the area of 15.2 acres a time of concentration of twenty six point six minutes and a peak runoff of 17.5 1 cubic feet per second the total run out for the existing site is 29.8 four cubic feet per second found using the junction equation shown on the screen now is a visual of the proposed site with the three drainage basins created and the drainage pipe the concrete drainage pipe is 36 inches in diameter about 950 feet in length and will drain the rainfall runoff from drainage basin to bios wells will be put in along the east and west sides of the stadium along with excess vegetation on the site to help reduce the flow rate of runoff drainage basin one has an area of 7.4 acres a time of concentration of twenty seven point five five minutes and they peak right in a peep runoff of 6.6 7 cubic feet per second drainage basin too has an area of seven acres at time of concentration of nineteen point 14 minutes and a peak runoff of nine point nine eight cubic feet per second drainage basin three has an area of 6.6 acres a time of concentration of twenty six point three eight minutes and a peep runoff of 9.1 7 cubic feet per second the total runoff for the proposed site is 22 cubic feet per second which means it has reduced from the existing site runoff hello my name is sin incopy I'm the environmental engineer on Team lucky 7 San Diego State University one of the largest campuses in the state of California is looking to expand by ways of a new state-of-the-art football stadium the college area is heavily urbanized with institutional and residential land use not to mention the business district with little to no build alternatives environmental mitigation will need to be swift in order to begin construction as well as keep the effects of the stadium at a minimum the community impact will begin with the relocation of Hewlett Drive residents through the governmental relocation assistance program those living in the director vicinity of the stadium will be protected through the immediate construction of sound walls and highly regulated construction hours noise factors will not only be present during construction but for the life of the stadium


through innovative structural design the stadium will contain much of the crowd commotion biological studies have taken place to ensure the proposed stadium site contains no natural communities threatened or endangered species or timberlands local transportation faces daunting impacts and will be harnessed through the addition of a trolley stop and the widening of various prime arterial and collector roadways in and around the college area currently the drainage basin carries water to the San Diego River directly across interstate a before and after site grading heavy use of fencing sand bags and silk curtains will be utilized to prevent hazardous runoff into local waterways light towers will be constructed low to the stadium angle directly at the field of play to reduce light pollution to nearby residents the proposed football stadium will have significant environmental impacts however in engineering practices and mitigation will keep these impacts at a minimum thank you while construction was not part of the scope of this project we have performed rough cost estimates on some elements of the construction in order to assess the feasibility notably the earth work alone would cost approximately 50 million dollars in order to make the site serviceable for the project considering the settlements to the east and west we also need to consider massive lawsuits these two elements alone make us conclude that this is not the ideal location for this project and while it is doable it is not practical regardless we have learned many valuable lessons in this project that will apply throughout our careers even on the limited scale to which we completed this project we found teamwork and communication essential for any progress to be made every disciplines conclusions and solutions affected the work of the other disciplines it has been a great learning experience thank you for listening New York Film Academy, Battery Park, Manhattan.

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