The OSL innovative community internal address system is designed appropriately for the haphazard unique layout mix of the Ghanaian structural environment. The internal address system consist of unique numbering patterns of streets and houses in communities with formal and informal layouts as shown below;
APPENDIX A
OSL BASIC STREET NUMBERING PATTERN TO SUPPORT STREET NAMING FOR EASY NAVIGATION WITHIN COMMUNITIES
- 1. Every Community shall have a main Entry Point.
- 2. The main street starts from the community entry point.
- 3. The Community Main Street shall be coded 00.
- 4. All streets branching from the main street is assigned a 2- digit code starting from 01, 02 etc. Odd numbers (01, 03,05 etc) are assigned to those branching to the left. Even numbers (02, 04, 06 etc ) are assigned to those to the right.
- 5. All streets branching from the 2-digit coded streets bear the codes of the streets they branch from plus two additional codes indicating their left or right turns. Streets branching to the left will have odd numbers ie 01, 03 etc. and those to the right 02.04 etc to give such streets 4-digit codes.
- 6. Streets codes compliment street names to faciitate navigation within the communities.
- 7. The coding of the streets follows 'the first contacted steet from the enty point, the first coded' principle.
Key Facts On OSL Street Coding Pattern
APPENDIX B
OSL CODING PATTERN FOR STRUCTURED HOUSING LAYOUT IN A COMMUNITY
- 1. Every house/structure is coded in relation to its accessible coded street.
- 2. All houses/structures alongside the community main street are assigned a 2-digit code.
- 3. Houses/structures on the left of the main street from the entry point are assigned odd numbers starting from 01.
- 4. Houses/structures on the right of the main street from the entry point are also assigned even numbers starting from 02.
- 5. A 4-digit coded house implies that the house is located behind a 2-digit coded house..
- 6. The coding of the houses or structures also follows ‘the first contacted house from the entry point, the first coded’ principle
Key Facts On OSL Street Coding Pattern for Structured Housing Layouts
APPENDIX C
OSL CODING PATTERN FOR INFORMAL HOUSING LAYOUT IN A COMMUNITY
- 1. This coding pattern is best suited for communities with informal housing layouts.
- 2. All houses/structure and empty plots alongside the community main street are assigned with 2-digit codes. Thus 01, 03, 05, etc will be the houses on the left whilst 02, 04, 06, 08, etc will be the houses on the right.
- 3. Any house/structure and empty plot behind a 2-digit coded house will bear the code of the house plus additional 2-digit codes indicating its sequential position from that house. Such a house will bear 4 digit codes (eg, 0101, 0201, 0303, etc).
