“C” Sheets

Hermosa Beach “C” Sheets are similar to a Grading Plan and/or Drainage Plan. A Civil Engineering plan (designated as “C” Sheets) shall be required for all new development constructing improvements within the public right-of-way. “C” Sheets shall be submitted separately from the Building Permit plan set for review by the Department of Public Works, concurrently with Building Department review. Approval of Public Works is required prior to issuance of the Building Permit. If new street or storm drain improvements are required, a licensed Civil Engineer must prepare the “C” Sheet. The “C” Sheets must be… Continue reading…

Erosion Control Plans

Wet Weather Erosion Control Plans show the minimization of the areas of disturbed soils and the duration of exposure during construction. This assures grading work on private or public projects does not result in soils or other material being washed from the construction site onto other properties or into water courses.  It is imperative to control water at up-slope site perimeters, control water on-site, control sediment on-site, and control sediment at the downslope site perimeters. B+W Reference: Homeowner Guide for Flood, Debris Flow, and Erosion Control in the City of Los Angeles

Excavation Plans

EXCAVATION PLANS show limits of the excavation (cut slopes, shoring, or a combination of both), adjacent streets and/or alleys with dimensions, and cross sections at various locations to show excavation details.

Grading Plans

Grading Plans shall include; property lines including public right-of-way to centerline of the street, all fully dimensioned, proposed building footprint and all structures, topographic survey of the private lot and the public right-of-way, sidewalks, curbs and gutters, handicap ramps, edge of pavement, parkways and driveways, storm drain devices including curb outlets, catch basins, on-site and off-site drainage with area drains, roof drains and flow direction.

LID – Low Impact Development

LID is a stormwater management strategy that seeks to mitigate the impacts of increases in runoff and stormwater pollution as close to the source as possible. The use of natural systems such as infiltration, evapotranspiration, and use of stormwater are promoted by a set of design approaches and Best Management Practices (BMPs). Los Angeles City adopted the Stormwater LID Ordinance in November 2011 with the purpose of: Requiring the use of LID standards and practices in future developments and redevelopments to encourage the beneficial use of rainwater and urban runoff; Reducing stormwater/urban runoff while improving… Continue reading…

Retaining Wall Plans

Structural Engineering is a specialty within the Civil Engineering field that analyzes and designs a structure such as a building, foundation plans or retaining wall plans.  Safety is important as these structures are often subjected to extreme forces such as temperature, weather, dynamic loads, and earthquakes.

Sump Pump Design and Calculations

Design Sump Pump systems and calculations to convey stormwater from the existing property to the street. A sump is defined as a low area which prevents the free passage of water, and results in flooding of streets or private property. Generally, gravity flow drainage facilities may be installed for sumps; however, there are some drainage situations which would require the use of a sump pump. The flows would naturally travel to downstream property. However, due to prior development there are no drainage facilities to accept flow from upstream area. The finished floor elevation of the proposed… Continue reading…

SUSMP – Standard Urban Stormwater Mitigation Plan

SUSMP, or Standard Urban Stormwater Mitigation Plan, was developed  to address stormwater pollution from new developments and redevelopment projects. Project applicants are required to prepare and implement a SUSMP, or Standard Urban Stormwater Mitigation Plan, when their projects fall into any of these categories: Single-family hillside residential developments Housing developments of 10 or more dwelling units (including single family tract developments) Industrial /Commercial developments with one acre or more of impervious surface area Automotive service facilities Retail gasoline outlets Restaurants Parking lots of 5,000 square feet or more of surface area or with 25 or… Continue reading…

We offer a wide selection of Civil Engineering Design Services.

  • C-Sheets
  • Drainage Plans
  • Erosion Control Plans
  • Excavation Plans
  • Grading Plans
  • Hillside Grading Plans
  • Hydrology Reports and Calculations
  • LID Low Impact Development
  • Retaining Walls Plans and Calculations
  • Slope Analysis
  • Sump Pump Design and Calculations
  • SUSMP Standard Urban Stormwater Mitigation Plan