[Ord. No. 777 §26-121, 3-23-1994]
A. The
regulations and provisions contained in the Design Standards for Public
Improvements are adopted for the following purposes:
1. To protect and provide for the public health, safety and general
welfare of Billings.
2. To provide for adequate transportation and circulation throughout
the City of Billings and to ensure the adequate provision of water,
sewer and other public utilities and services.
3. To prevent the pollution of water resources, to protect from flooding
and other dangers and to ensure the adequacy of drainage facilities.
4. To preserve and protect the value of land and buildings through minimizing
land development conflicts and encouraging reasonable standards of
subdivision design and the provision of public improvements.
[Ord. No. 777 §26-122, 3-23-1994]
A. All
engineering drawings shall be of uniform size twenty-four (24) by
thirty-six (36) inches and shall have a standard title block on the
lower right-hand corner of the sheet. Consultants shall place their
own title block above or to the left. The registration seal of the
responsible engineer shall be placed in a convenient place in the
lower right-hand corner of each sheet of plans.
B. Whenever
possible, engineering plans and profiles shall be drawn to a standard
sale of one (1) inch equals fifty (50) feet horizontal and one (1)
inch equals five (5) feet vertical. Drainage area maps, construction
details and cross section or contour maps shall be drawn o a suitable
scale.
C. Elevations
on profiles and sections or as indicated on plans shall be U.S.G.S.
datum. At least two (2) permanent bench marks in the vicinity of each
project shall be noted on the first (1st) drawing of each project
and their location and elevation shall be clearly defined.
D. The
top of each plan shall be either north or east and the standard north
arrow should be used. The stationing on street plans and profiles
may be either from the left to right or from right to left, but on
drainage plans the stationing shall always begin at the low point.
E. When
more than one (1) drawing is involved in one (1) project, an overlap
of not less than one hundred (100) feet should be provided. Each project
shall show at least fifty (50) feet of topography on each side. All
existing topography and any proposed changes, including utilities,
telephone installations and so forth, shall be shown on the plans
and profile.
F. Revisions
to drawings shall be indicated above the title block and shall show
the nature of the revision and the date made.
G. Typical symbols to be used in the preparation for engineering drawings are contained in Section
400.1030. Topography for which symbols are not standardized shall be indicated and named on plans and profiles. In utilizing the standard symbols for engineering plans, all existing utilities, telephone installations, storm sewers, pavements, curbs, inlets and culverts and so forth shall be shown with a broken line; proposed facilities with a solid line; land, lot and property lines to be shown with a slightly lighter solid line. Easements shall be shown and, if known, the book and page number of the recording.
H. It
shall be understood that the requirements outlined in these standards
are only minimum requirements. When unusual subsoil or drainage conditions
are suspected, an investigation should be made and a special design
prepared in line with good engineering practice.
I. Each
plan should indicate the owner or subdivider for whom improvements
are to be constructed.
J. Lot
lines and dimensions shall be shown where applicable.
[Ord. No. 777 §26-123, 3-23-1994]
Three (3) sets of the engineering construction plans for streets
and storm sewers shall be submitted to the City Engineer. After approval
by the City Engineer, one (1) set of the engineering plans will be
retained by the contractor on the job site.
[Ord. No. 777 §26-124, 3-23-1994]
Periodic inspections shall be required during the construction of all public improvements. The developer shall schedule a preconstruction conference with his/her contractor, the City Engineer and the City Public Works Director to discuss project expectations and required inspections. The City Engineer shall witness acceptance testing of water and sewer mains. Required street improvement inspections shall be as set forth in Section
400.1190.
[Ord. No. 777 §26-125, 3-23-1994]
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R.O.W. line and lot lines
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Iron pin
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Stone marker
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Power pole * high voltage x service poles (show voltage if over
normal distribution)
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Telephone pole * high voltage w/telephone x service pole w/telephone
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Power or telephone anchor (show distance to pole)
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Telephone manhole (show square or circular)
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Underground telephone cable
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Underground power cable
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Underground white-way cable
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Building (show size and type of material)
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Building overhanging (show exact outlines and kind)
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Concrete paving between integral curbs (show paving and parkway
width)
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Asphalt paving between concrete curb and gutter (show paving
and parkway width)
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Hedge (show kind, width and height)
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Swamp
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Pond or sinkhole
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Ditch and direction of flow
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Earthwork cut
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Earthwork fill
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Clothesline
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Meadow
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Cleared land
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Orchard
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Cultivated land
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Directional symbol
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Culvert pipe (show type and size)
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Box culvert (show type and size)
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Storm sewer and junction box (show M.H. cover or with grate)
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Storm sewer inlet or grate
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Street light (show kind)
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Traffic sign (show kind)
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Traffic light (show kind)
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Stone wall (show width and height)
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Concrete or block wall (show width and height)
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Fence (show type and height)
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Tree (show kind and size)
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Bushes or shrubs (show kind)
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Evergreen tree
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