bin project city of new york
Download
Skip this Video
Download Presentation
BIN Project : City of New York

Loading in 2 Seconds...

play fullscreen
1 / 21

BIN Project : City of New York - PowerPoint PPT Presentation


  • 81 Views
  • Uploaded on

BIN Project : City of New York. You are here. Objective. Assign all NYCMAP building polygons with a Building Identification Number (BIN) Associate a Borough-Block\_Lot (BBL) to each Building Polygon

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'BIN Project : City of New York' - lenora


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
objective
Objective
  • Assign all NYCMAP building polygons with a Building Identification Number (BIN)
  • Associate a Borough-Block_Lot (BBL) to each Building Polygon
  • Maintain “real time” Building status by tracking permit to COO process and building footprint changes
automatic bin assignment
Automatic BIN Assignment
  • Overlay parcel geometries with building geometries
    • each BBL has zero, one or many BINs
  • Assign BINs to building geometries when there is a one to one correspondence given:
    • 75% overlap of building polygon with parcel or
    • 60% overlap and centroid of building within parcel
  • For matches fill in Rpad fields:
    • cogis_borough; cogis_tax_block; cogis_tax_lot: cogis_bbl; rpad_high_house #; rpad_low_house #; rpad_street_name.
slide4
Building Layer

Assignment & Verification Process

  • Automated assignment of Borough, Block and Lot -
  • Parcel data was extracted from COGIS layer using a point-in-polygon operation.
  • The specified criteria for building polygons to become associated with a lot’s BBL
      • 75% of the building polygon overlaps with a parcel, or
      • 60% overlap occurs and the centroid of that building is within the parcel.

COGIS Layer: access BBL number

Associate BBL with

building polygon

Building Layer: with newly

inserted BBL number

slide5
B

U

I

L

D

I

N

G

A

T

T

R

I

B

U

T

E

S

manual verification process
Manual Verification Process
  • Building Polygons with unverified or no BINs
    • Address from Sanborn verify in GOAT
  • Multiple buildings or too few buildings per parcel
    • use Sanborn as guide
      • fewer buildings, then split
      • too many building components merge
    • more than one address range use PACS to get address then query GOAT to assign BIN
    • for discrepancies use secondary sources such as aerial photographs and call a contact person
    • no BIN found assign as problem
  • New, Demolished or Altered Buildings
    • On Sanborn and GOAT: create new building poly, delete or addition
    • DOB/HPD source
validation procedure attr
Validation Procedure (Attr.)
  • Automatic Validation Procedures
    • Check for duplicate BIN
    • 7 digit BIN and first digit less than 6
    • if bbl_source = Rpad or Geo and no record found in Geo_Rpad table using current BBL
      • invalid BBL flag raised
    • if bbl_source = Geo and bin_source = Geo but no record in Geo_Rpad of BBL/BIN combination
      • invalid BIN/BBL combination flag raised
validation geometry cont
Validation (Geometry) Cont.
  • Trigger attribute setting
    • split/merge action ----> poly mod <---- split/merge
    • digitize action ----> poly mod <---- new
  • User input
    • source type <---- photogrammetric (default)
    • source type <---- other (manual)
    • source type <---- site plan
data model
Data Model

Permits

Geo-Rpad

m:n

1:n

m:n

(bin)

(bbl)

Buildings

COGIS

(bbl)

m:n

(bin)

1:n

Address

slide12
Breezy Point - more buildings than BIN’s

BBL 4163500400

BIN list contains 82 entries - there are at least 200 buildings. COGIS inaccuracy also shown by “missing lot” buildings at left center. This problem also occurs frequently in new condominium developments.

slide13
Inaccuracy of COGIS coverage

Misalignment results in automatic matching with incorrect lot, frequently extending down entire block. In addition, polygons are missing for Central Park, JFK Airport, Flushing Meadows Park and perhaps other parks.

slide15
MTA Coney Island Yard - no BIN’s

BBL 3072080040

In addition to MTA yards and the airports, this is frequently found in Con Edison substations, parks, universities and hospitals.

slide16
One building covering multiple lots

BBL 3050500051

Building covers (w to e) lots 76, 71, 66, 62, 60 and 51. All lots except 51 have “3000000” as BIN in GOAT.

slide17
BIN without a building - lot is underwater!

BBL 3088960550

There are many other GOAT BIN’s for which no buildings are found. PACS frequently lists these either as “vacant land”, or with buildings built early in the 20th century.

slide18
A “long lot” 4 feet wide!

BBL 4088920135

Many other bizarre shapes are found, occasionally with a BIN. Many other lots have been found in which the GOAT address entry obviously applies to a totally separate block.

slide19
Garages with and without BIN’s

BBL 2055320101

The great majority of garages do not have their own BIN’s listed in GOAT. Occasionally, a group of garages with BIN’s is found, and the Douglaston area of Queens appears to be unique in that nearly every garage has its own BIN.

slide20
Garage and gas station - built 1800?

BBL 3084330052

This PACS entry is obtained for a significant number of vacant lots. Perhaps 1800 is a default date?

slide21
Church on a condominium lot

BBL 1018597501

Tempted as one might be to assert that God works in mysterious ways, further investigation reveals that PACS does not list the church as lot owner, and the church is not listed in the Manhattan telephone directory. It is therefore likely that this is an instance of Sanborn’s maps being out of date.

ad