Design Criteria Document
Mira Loma Women’s Detention Center
Section 3.14:
SCOPE OF CONSTRUCTION / BUILDING BY BUILDING REQUIREMENTS
GENERAL:
The existing on site grading, within the AB 900 project boundary, has a high elevation of 2351.1 feet and a low point of
2343.9 feet. This grade transitions at 0.46% from the high point northwest of building 1 to the southeast boundary corner
past portable building 32. The other corners of the set boundary range between 2350-2345 feet, all leading to the low point.
Grading within the site varies as the existing site has three exiting points for surface storm water drainage and various
locations that require ADA compliance such as paths of travel and accessibility ramps. The analysis of the site is based on
information acquired from the provided survey, further information may be required. The design build team should also
incorporate SUSMP and Erosion Control plans.
Existing Site Grading:
Barrack area: The northern barracks, buildings 7-15, have two access doors. The slopes from the rear access range from
one percent to two percent with cross slopes of 0.10% to 0.80%. The path of travel is ADA compliant. The front entrance of
these buildings have a directional slope ranging from 1.90% to 5.17% percent with cross slopes around 0.50%. Since these
areas are in front of the entrances they are not ADA compliant and would require regrading if the existing barracks are to
remain as is. The southern barracks, buildings 16-22, have the two access doors. The rear directional slopes are all below
2.00% with the cross slopes less than 0.50%. The path of travel is ADA compliant and the existing may remain. The
directional slopes at the front entrance range from 1.2% to 2.75%. The entrances are not ADA compliant and would require
regrading if the existing barracks are to remain as is.
towards the building. There is a small area of concrete for drainage on the eastside of the buildings. The landscape area
between building 3, the steam plant and the kitchen, is approximately 2.5 acres. The area slopes towards the southeast
away from any buildings in the area. The existing kitchen has multiple entry ways along with multiple finished floor
elevations. The finished floor elevation drops about ten inches within the building. The exterior has various access and
delivery ramps. From the information provided, the gated ramp at the southeast end of the building is not ADA compliant, all
other access ramps are to be verified. The grading around the building includes planting areas to the southeast and
southwest, slope direction requires further information and investigation. The adjacent areas include a service road with a
concrete gutter in the center and a paved parking area. The parking grade slopes in two different directions, there is an
existing concrete gutter that divides the parking lot. The right slopes southeast and the left slopes southwest towards the
kitchen buildings. The storage building adjacent to the kitchen has a continuous finished floor elevation with a paved area
around the building. More information is required to analyze the existing slopes around the building.
Buildings E & F area: Buildings E and F are similar buildings. Both have various access doors around the building. Each of
these doors have a concrete step to the entrance. The step is half a foot above the finished surface for each door. Both of
the buildings are enclosed by landscape areas, the existing grade slopes away from the buildings onto the paved road way
north and south of the buildings, as well as to a dirt area to the east. The path of travel to the buildings requires more
topographical information in order to establish the path’s ADA compliance.
Buildings 23-25 area: The area is composed of the segregation housing, recreation building and existing office space. Each
building has various access doors and existing gates. The southwest area behind the buildings is below 2.00% for both
directional and cross sectional slopes. The area in between the three buildings is an existing basketball and volleyball area,
the slope is under 2.00% sloping southeast. Building 23 requires further information as to the number of access doors and
path of travel. It is shown that the finished floor elevation is constant and the existing grading around the structure is
relatively flat, sloping 0.35% to the southeast. Building 24 show a constant finished surface and six access doors, the path
outside of the building is an elevated concrete slab where the maximum difference between the concrete and the finished
surface is a foot. There are steps and a small ramp at the southeast corner of the building, the ramp is not ADA compliant.
The grading in front of the buildings slopes south. Building 25 has a constant finished floor elevation with multiple access
doors. The exterior grading slopes away from the building. There is a planter area to the north and the rest is paved surface.
The building concrete slab has a grade difference at the southeast corner of the building.
Buildings 4-6 area: the area includes three classroom/training buildings and a sports field. The buildings have multiple
access doors along with a concrete slab. The grading slopes away from the buildings, leading to a planter area to the north
and northwest of the buildings. Buildings 4 and 5 have a dirt area northeast of the buildings, sloping away onto the adjacent
paved roadway. There is a grade break at the south west corner of building 5, the paved asphalt slopes down as the
concrete slab continues around the building. Building 6 has paved asphalt around the building and the same grade break as
building 5 at the northern corner. South east of building 6 is an empty area that is partially paved and the rest is natural
grade. The area slopes gradually towards the southeast.
Administration area: The administration area consist of buildings 1, 2, 3 and 27 which include existing offices, infirmary and
a modular building which is currently used by immigration courts. Building 1 has multiple access doors but maintains a
consistent finished floor elevation throughout the building. The grading around building 1 is mainly for landscape area
except for the five entrances which include access ramps. The existing ramps are switch backs, with information acquired
from the survey, the ramps and landings are ADA compliant but might require maintenance. Building 2 has multiple entry
ways along with multiple finished floor elevations. The finished floor elevation drops about an inch within the building. The
grading around the building includes a ten foot wide concrete platform with an accessibility ramp, which is ADA compliant.
Building 3 has multiple entry ways along with multiple finished floor elevations. The finished floor elevation drops about half
an inch within the building. The grading around the building includes a ten foot concrete platform on the west side of the
building and a dirt area on the east portion. Both buildings 2 and 3 have smaller ramps on the southern end, these ramps
are not ADA compliant.
Open field and kitchen: The northeast area above building 3 includes the existing steam plant, large landscape area, the
kitchen, and storage buildings. The existing steam plant is enclosed by landscape area and the existing grading slopes
June 1, 2014
Page 3.14-1
Design Criteria Document
Mira Loma Women’s Detention Center
Section 3.14:
SCOPE OF CONSTRUCTION / BUILDING BY BUILDING REQUIREMENTS
Proposed Site Grading:
The following proposed grading is schematic only and to be used for reference only. The design build contractor is to coordinate any
and all low and high points, follow ADA compliance with 2% maximum slope in any direction for path of travel areas, when a building
requires an access ramp or any path of travel that is greater than 5% handrails are required. Maximum slope for ADA compliance
ramps shall be 8.33%. Fire lanes are to follow California Fire Code requirements.
Barrack area: The grading around the buildings are to slope away from the barrack structures. If the back of the barracks
are to include the existing access door, then the concrete path in this area is to remain sloped less than 2% in all directions.
The north and south planter areas between the buildings should slope towards the concrete path for drainage. The front of
the building, the main entrance for the barracks, and the walkway in between both of the barrack structures should be
graded less than 2% in all directions. The planter areas along these concrete walkways are to be graded sloping towards
the southeast, following the existing grading for drainage.
Buildings 23-25 area: grading is to slope away from structures. Stairs and ramp in the southeast of building 24 to be graded
following ADA compliance. Northeast area of buildings to be grated towards the adjacent planting areas. Flow lines are to
lead to the nearest drainage structure.
Buildings 4-6 area: the grading behind building 4 and 5 are to slope northeast, away from the structure. The rear of building
6 is to slope east towards the nearest drainage structure. The front of buildings 4, 5, and 6 are to be graded towards the
existing planter area. These planter areas are to be graded towards a low point within each of the planter areas. The sports
field is graded into two areas sloping towards the northeast and the northwest
Administration area: Per coordination with the architect these existing buildings, 1, 2, 3 and 27 will remain. Design build
contractor to verify the grading of the access ramps to the buildings per ADA requirements. The grading shall slope away
from the buildings. The slope shall be in a general southeast direction leading towards the nearest drainage structure when
possible.
Open field and kitchen: the previously open area will now be the location for the new medical and IPA buildings and a fire
lane. The grading around the buildings will slope away from the structures into two areas either towards the northeast onto
the nearest planter area or drainage structure, or the south west towards the planter area or drainage structure. The grading
around the kitchen and new warehouse buildings slope away from the structures in all directions. Southwest of the kitchen
will have the existing planters with drainage structures. Northeast of the new food warehouse will have a new drainage
structure, and the surface around the new warehouse/laundry building shall be graded sloping north.
Buildings E & F area: Per coordination, the existing planter areas southwest of buildings E and F will remain, the surface
around these planting areas shall slope towards the planting areas. The surface east of the buildings are to slope northeast.
Design build contractor to verify the step at the access doors and all path of travel walkways to be ADA compliant.
June 1, 2014
Page 3.14-2