Design
 

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    Once basic conceptual land planning has been completed, and initial environmental factors taken into account, the next step is to begin the advanced design of the project, starting with the Preliminary Plan phase of the project, on through to Final Plans.

    Assuming the proposed project is both feasible and funded), detailed engineering design is next performed to develop engineering drawings and specifications necessary for construction.  This work involves:

 

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review and analysis of all site parameters such as topography, soils, geology, hydrology, environmental,

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review and summary of agency design and drawing specifications,

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review and documentation of agency review and approval process,

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performance of engineering design,

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preparation of construction drawings,

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preparation of construction specifications,

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submission of plans to reviewing agency and processing of plans to approval,

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preparation of detailed quantity and cost estimates to be utilized for bonding purposes.

 

The above design process covers all major areas of the project:

 

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earthwork and grading,

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structures,

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streets and highways,

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hydrology/hydraulics/flood hazard/drainage,

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recorded subdivision maps,

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water systems,

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sewer systems,

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utility systems.

 

    Specific projects completed in these major areas are described in the sections which follow:

 

Earthwork and Grading

 

    The following is a listing of major projects completed and the amount of excavation involved in their actual construction.  In addition to these major jobs,  a large number of small jobs have been performed with excavation quantities of less than 50,000 cu. yds. each.

 

Project Name Description Quantity of Excavation (cubic Yards)
Hidden Hills Residential tracts 740,000
Golden West Residential tracts 50,000
Calabasas Park Gold course 6000,000
Calabasas Park Entrance parkway 360,000
Calabasas Park Lake Calabasas 550,000
Shel Homes Residential tracts 435,000
Oakmont View Residential tracts 3,070,000
Flintridge California Division of Highway fill 500,000
Total 6,305,000 cubic yards

 

 

    In addition to the above projects which were actually completed, master planning was accomplished for the following projects which required extensive earthwork.

 

Project Name Description Quantity of Excavation (cubic Yards)
Malibu Shores 1500 homes 2,500,000
Verdugo Mountains 4680 homes 10,900,000
Total 6180 homes 13,400,000 cu. yds

 

    Francis Smith Engineering, Inc. has been actively involved in providing engineering design and construction engineering services for large scale grading projects.  Pioneering work has been performed in developing earthwork computation theory and instrumentation.

 

    The computation of earthwork by contour method is described in the American Society of Civil Engineers Journal of the Construction Division, March, 1976 ‑ see article “Earthwork Volumes by Contour Method” by Francis E. Smith.

 

    Proprietary earthwork computation instruments and systems have also been developed and are utilized for the computation of earthwork by cross section and contour methods.

 

    Earthwork computer programs have also been written for use on various computer systems.

 

Streets and Highways

 

    Streets and highways are an integral part of every major project undertaken by this firm and the majority of streets designed have been constructed in steep hillside terrain which could only be considered mountainous.  Due to the extreme nature of the terrain, these roadways involved extensive earthwork and drainage considerations in addition to the usual criterion of:

 

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roadway function,

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roadway classification,

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traffic characteristics,

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volumes ‑ ADT, DHV,

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levels of service,

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lane and shoulder widths,

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safety,

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protective devices,

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design speed,

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horizontal geometry,

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vertical geometry and grades,

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super‑elevation,

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topography,

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grading,

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drainage,

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erosion control,

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sight distance,

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cross section,

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structural section,

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utilities,

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structures,

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operation and maintenance,

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environmental,

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scenic overlooks and rest stops,

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soils,

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geology,

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rock removal,

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ground water,

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right of way and easements,

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access,

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access control,

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weather and climate,

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geographic location and orientation,

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snow removal,

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control of ice,

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climbing and passing lanes,

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acceleration and deceleration lanes,

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noise,

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marking and signing,

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lighting,

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equestrian and pedestrian crossings,

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emergency parking and communications.

 

    A highway  in California of particular note which was worked on is the Calabasas Parkway involving several miles of roadway construction and 360,000 cu. yds. of excavation.  Also entrance roadways for the Oakmont View project were constructed in very steep mountains and involved a major bridge crossing of a significant flood control channel (see project summaries for Calabasas Park and Oakmont View).

 

    A highway in Utah of particular note which was worked on with other consultants is Wasatch County Route A involving 7.8 miles of roadway and approximately 1,230,000 cu. yds. of excavation, total cost $11,000,000.

 

Structures

 

    Normal structures associated with typical projects include bridges and retaining walls, drainage inlet and outlet devices, utility vaults and manholes, highway appurtenances etc. The services of outside structural engineering consultants are used for this firm=s structural engineering needs.

 

Hydrology/Hydraulics/Flood Hazard/Drainage

 

    The control of surface drainage has been a significant design element of all projects designed by this firm. In addition, numerous projects completed have involved the crossing of, or channelization of major drainage courses.  The following are principal design aspects involved in this drainage work:

 

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Hydrology calculations to determine the quantity of expected storm water runoff.

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Flood hazard studies to determine the extent and depth of storm waters in natural terrain.

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Hydraulic calculations, to size inlets and outlet devices, pipes, conduits, and channels for the conveyance of storm waters within the project.

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Flood routing and detention structures for reduction in peak storm water runoff.

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Flood routing and detention structures for water quality considerations.

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Erosion control measures.

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Expected debris generation and the design of debris basins.

 

    Major drainage and flood control facilities have been designed by this firm for hillside grading projects in the Verdugo Mountains and the Santa Monica Mountains.  These areas are subject to extremely large and rapid amounts of storm water runoff and debris due the climatic conditions and the orientation of these mountains in Southern California.  The Shel Homes and Oakmont View projects in particular, described in the Appendix of this report, contained major drainage and flood control features for which design and construction engineering was provided.

 

Water Quality

 

    Incorporated in many forward thinking agency subdivision requirements are elements of Water Quality design based on Best Management Practices established by the Environmental Protection Agency, State of Utah, and local area jurisdictions.  Wasatch County, Utah imposes strict water quality design restrictions for all development applications, and these design parameters have been incorporated in Wasatch County plans designed by this firm.

 

Recorded Subdivision Maps

 

    The following is a listing of projects requiring the recording of Tract Maps, Parcel Maps, or Metes and Bounds Descriptions necessary for the conveyance of property; (  ) indicates condominium units.  The projects are listed sequentially by date of recordation.  Recorded subdivision and condominium plats have been prepared from 1962 to present for projects in California and Utah.

 

SUMMARIES:

 

Projects containing individual lots:

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100 projects, 1802 lots.

 

Projects containing condominium units:

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11 projects, 398 units.

 

Total:

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111 projects, 2200 lots/units

 

    In addition to the above projects which were completed and recorded, work was performed on a  number of projects which never reached the recordation stage.  Many projects are abandoned in the design phase due to marketing and financing problems encountered by the developer.

 

Culinary Water Systems

 

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supply facilities,

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storage facilities,

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treatment facilities,

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distribution system.

 

Pressurized Irrigation Systems

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supply facilities,

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storage facilities,

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distribution system.

 

Sewer Systems

 

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collection system,

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treatment and disposal facilities.

 

Utility Systems

 

Also involved in the design of every major project are integrating elements of the following utility systems:

 

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power systems:

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supply facilities,

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distribution system,

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lighting facilities,

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hydro‑power systems (where applicable),

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natural gas systems,

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telephone systems,

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and Cable TV systems.

 

 

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Copyright © 2002 Francis Smith Engineering, Inc.
Last modified: 05/16/02