Zanzibar Building Tagging Guidelines

This page currently being modified. It is incomplete.
This page describes the subset of Tags that were used for the mapping of the Ng'ambo area, the city centre of Zanzibar, by the NGT team.

This page only contains the detailed description for the Tag. A full list of Tags that you could print out for in the field and should have at hand while digitizing is the Zanzibar Building Tagging Guidelines Summary. <do we need this here?

Urban

Urban Typology

Tagging options for the urban typologies of Ng'ambo, according to the NGT team project field survey.
Use of the key urban:typology=* introducing new, more specific for this context values.

The official Proposal for the key:urban is currently a sandbox.
The official Proposal for the key:urban:typology is currently a sandbox.

Urban Typology values

Key	Value	Description	Photo
urban:typology	organic_swahili_urban
urban:typology	grid_swahili_urban
urban:typology	bazaar_street
urban:typology	temporary_commercial
urban:typology	high_street
urban:typology	institutional_complex
urban:typology	low_density_suburban
urban:typology	karume_new_town
urban:typology	public_recreation
urban:typology	limited_access_zone

Building

These are the options you can put into the key building=*. You must use an option. When you trace you will almost always put in 'yes', but when you are out in the field, you should pick a more specific value.

Building Function

Accommodation

Key	Value	Comment	Photo
building	apartments	A building arranged into individual dwellings, often on separate floors. May also have retail outlets on the ground floor.
building	hotel	A building designed with separate rooms available for overnight accommodation. Normally used in conjunction with tourism=hotel for the hotel grounds including recreation areas and parking.
building	house	A dwelling unit inhabited by a single household (a family or small group sharing facilities such as a kitchen). Houses forming half of a semi-detached pair, or one of a row of terraced houses, should share at least two nodes with joined neighbours, thereby defining the party wall between the properties.
building	residential	A general tag for a building used primarily for residential purposes. Where additional detail is available consider using 'apartments', 'terrace', 'house' or 'detached'.
Commercial
building	commercial	A building where non-specific commercial activities take place; use office=* to describe the type of office. Consider tagging the area using landuse=commercial. Use 'retail' if the building consists primarily of shops.
building	industrial	A building where some industrial process takes place. Use warehouse if the purpose is known to be primarily for storage/distribution. Consider using landuse=industrial for the surrounding area and the proposed industrial=* tag to describe the industrial activity.
building	retail	A building primarily used for selling goods are sold to the public; use shop=* to identify the sort of goods sold. Consider use landuse=retail for the surrounding area.	File:Extensive Retail Mall.jpg
building	warehouse	A building primarily used for the storage or goods or as part of a distribution system.
Civic/Amenity
building	mosque	A mosque. Used in conjunction with amenity=place_of_worship, religion=*, denomination=* and landuse=religious for the grounds where it is in current use.
building	civic	For any civic amenity, for example amenity=community_centre, amenity=library, amenity=toilets, leisure=sports_centre, leisure=swimming_pool, amenity=townhall etc. Use amenity=* or leisure=* etc to provide further details. See building=public as well.
building	hospital	A building which forms part of a hospital. Use amenity=hospital for the hospital grounds.
building	school	For any generic school buildings. Buildings for specific uses (sports halls etc) should be tagged for their purpose. Use amenity=school for the perimeter of the school grounds.
building	public	A public building. Don't use amenity=public_building.
Other Buildings
building	kiosk	Use this for single box Duka's that are not inside a bigger building	Need a Zanzibar Picture
building	container	When a container is used as a building. If there is a shop in the container use 'retail;container'.	Need a Zanzibar Picture
building	ruins	An house, a village or other building abandonned.
building	yes	Use this value where it is not possible to determine a more specific value.
building	construction	Used for buildings under construction. Use construction=* to hold the value for the completed building.	Need a Zanzibar Picture

Architectural Style

Tagging options for the architectural style of Ng'ambo buildings, according to the NGT team project field survey.
Use of the key building:architecture=* introducing new, more specific for this context values. Architectural_style

Architectural Style values

Key	Value	Description (to be edited)	Photo (to be filled)
building:architecture	classic_swahili	... (to do: add a chapter in Wikipedia "Swahili Culture" page about "Architecture") Swahili culture or Swahili Architecture? -If we update it yes... we can use that one instead.
building:architecture	omani	Oman#18th and 19th centuries
building:architecture	indian	Culture of India#Architecture (RB: I found [1] and there are many more indian Architecture styles on this page, too.) -hmmmm. we wait for the description first.
building:architecture	british_colonial	Colonial architecture
building:architecture	art_deco	Art Deco#Architecture
building:architecture	modernism	Modernism
building:architecture	eclectic	Eclecticism
building:architecture	hypermodern	Hypermodernism (art)

Architectural Typology

We should mention how this key relates to building=. Especially for mosque or market_stall. Of the quite generic definition in the previous paragraph, how do we encourage people in the OSM community to use this field and what kind of values do we want them to start using? -Maybe we do that in the proposal page?

Tagging options for the architectural typologies of Ng'ambo buildings, according to the NGT team project field survey.
Use of the key building:architecture:typology=* introducing specific for this context values.

The official Proposal for key:building:architecture:typology is currently a sandbox.

Architectural Typology values

Key	Value	Description (to be edited)	Photo (to be filled)
building:architecture:typology	single_storey_swahili	Predominantly residential, single storey, multi-functional.
building:architecture:typology	modern_multi_storey_swahili	Predominantly residential, two or more storeys, built on footprint of single-storey Swahili house
building:architecture:typology	post_modern_multi_storey_swahili	Contemporary multi-storey buildings built on one- or multiple footprints of an old Swahili house (single_storey_swahili value link here). The post-modern multi-storey Swahili comprises both residential and mixed-use buildings found in the Ng’ambo area. For the time being most of the post-modern multi-storey Swahili buildings are either solitary buildings placed within the context of single-storey Swahili houses or groups of two or more independent buildings built close to each other with little consideration to the neighbouring structure, yet respecting the street line. Post-modern multi-storey Swahili can also be seen as an emerging tendency within the architectural development of the area.
building:architecture:typology	suburban_villa	Single family house, surrounded by garden, often fenced.
building:architecture:typology	apartment_block
building:architecture:typology	indian_shopfront	Mixed-use, residential and commercial
building:architecture:typology	modern_indian_shopfront	Three or more storeys, built on the footprint of an Indian shopfront, mixed-use, residential and commercial.
building:architecture:typology	arcade_building	1-2 storeys with arcades housing commerce, remaining storeys residential or other use. Architectural typology mainly found in Dar es Salaam describing multi-storey buildings comprised of shopping arcades on the two first storeys and with more enclosed remaining storeys used for offices, hotels and residential purposes.
building:architecture:typology	high_street	Multi-storey and mixed-use typically urban phenomenon found in the United Kingdom. It is used as a metonym for the concept of the primary business street of towns or cities especially to distinguish it from more concentrated city centres. As Ng’ambo lacks a clearly defined CBD we have decided to borrow the High Street concept to define streets with high concentration of business developed in recent years.
building:architecture:typology	public_school
building:architecture:typology	madrasa
building:architecture:typology	mosque
building:architecture:typology	market_stall
building:architecture:typology	others	Leisure /tourism - sport clubs/clubs/guest houses/hotels etc.

Building Structure

Tagging options for the building structure , meaning building technologies or main materials of buildings found in Ng'ambo, according to the NGT team project field survey. Use of the key building:structure=* introducing new, more specific for this context values.

The key building:structure is different than the key building:material as building:material describes only the outer layer of the building or roof. It is used by 3D rendering engines. building:structure describes how the building/roof was constructed. eg. a building:structure=cement_blocks may have material=metal or material=plaster depending on what the ultimate finish layer of the building is.

The official Proposal for the key:building:structure is currently a sandbox.

Building Structure values

Key	Value	Description	Photo
building:structure	wattle_and_daub	Wattle and daub is a composite building material used for making walls, in which a woven lattice of wooden strips called wattle is daubed with a sticky material usually made of some combination of wet soil, clay, sand, animal dung and straw. Wattle and daub	Spiro wattleanddaub HRoe 2005
building:structure	concrete_frame_and_cement_blocks	Building technique in which concrete counteracted with steel reinforcing bars is forming the building’s structural system, while the filling of walls is made of cement blocks. Reinforced concrete
building:structure	cement_blocks	Masonry technique of making mainly one floor buildings with cement blocks and a binding material. Sometimes reinforced with simple concrete rings. Concrete masonry unit	CMUs
building:structure	coralstone_and_lime	Masonry technique of making stone structures from a type of limestone called coralstone, a binding lime mortar and lime plaster. Limestone Lime (material)
building:structure	makeshift	"Acting as an interim and temporary measure” A structure that was made with whatever material was around to meet a certain immediate need.

Building Condition

Tagging options for the physical condition of buildings found in Ng'ambo, according to the NGT team project field survey.
Use of the key building:condition=*.

Building Condition values

Key	Value	Description
building:condition	good
building:condition	average
building:condition	poor
building:condition	ruinous
building	construction	Under construction state.

Building Levels

Tagging for the number of levels/storeys found in Ng'ambo buildings, according to the NGT team project field survey. Use of the key building:levels=*.

Roof

Tagging options for the roof structure found in Ng'ambo buildings, according to the NGT team project field survey. Describing the two main parts of a roof. Its supporting structure and its outer skin, or uppermost weatherproof layer.

Use of the key building:structure=* introducing new, more specific for this context values.

The official Proposal for the key:roof:structure is currently a sandbox.

Roof Structure values

Key	Value	Description	Photo
roof:structure	concrete	Concrete slab. Concrete slab	Suspended-slab-formwork
roof:structure	timber_frame_and_metal_sheets	Supporting frame is structured with a framework of a timber roof truss, covered with corrugated iron sheets. Timber roof truss	MountLawleyRooftops gobeirne
roof:structure	timber_frame_and_roof_tiles	Supporting frame is structured with a framework of a timber roof truss, covered with roof tiles. Roof tiles	Roof-Tile-3149
roof:structure	bushpole_frame_and_makuti	Supporting frame structured with bush poles and roofing made of makuti thatching. Makuti thatching Thatching	Malindi town view