The 1993 guideline for cluster planning in housing (IS 13727) offers detailed instructions to optimize land utilization via low-rise, high-density housing clusters that enhance community connectivity. It is relevant for public, private, and cooperative housing schemes, covering aspects such as design criteria, allocation of open spaces, access routes, and building norms to create sustainable, socially integrated residential clusters, including special provisions for slum rehabilitation and group housing.
Overview
The 1993 guideline for cluster planning in housing (IS 13727) offers detailed instructions to optimize land utilization via low-rise, high-density housing clusters that enhance community connectivity. It is relevant for public, private, and cooperative housing schemes, covering aspects such as design criteria, allocation of open spaces, access routes, and building norms to create sustainable, socially integrated residential clusters, including special provisions for slum rehabilitation and group housing.
Audience
Contents
Structure
This section outlines the purpose of IS 13727, which is to provide recommendations for low-income housing design and development primarily in urban areas. It highlights the interrelation with other standards such as SP 7:1983 (National Building Code of India) for fire safety and structural design, and IS 8888 for low-income housing guidance. The section emphasizes adherence to fire safety norms, structural soundness, and quality assurance via BIS certifications.
This chapter details the pivotal adjunct standards supporting IS 13727, notably SP 7:1983 (NBC) and IS 8888 (Part 1):1993, which are mandatory for fire safety, structural design, plumbing, and housing guidelines. It also discusses BIS licensing and ongoing quality control measures ensuring compliance and product reliability.
Clause 3 defines terminology specific to cluster housing, including building design criteria, fire safety measures, structural parameters, and service provisions. This ensures uniform interpretation aligned with referenced Indian standards, particularly SP 7:1983 and IS 8888.
This part prescribes essential planning parameters such as minimum plot and plinth areas for slum resettlement, cluster size ranging from 20 to 100 units, requirements for open spaces (minimum 30% of cluster area), internal road widths (minimum 3.5 m), setbacks (minimum 1.5 m), and density limits (150-250 persons per hectare). It also includes formulas for calculating plot coverage.
This section refers to building design standards governed by NBC (SP 7:1983) and IS 8888, covering fire safety, structural integrity, building services, and plumbing. It includes references to detailed requirements and tables specified in SP 7:1983.
Guidelines for shared group open spaces within clusters are provided, including minimum width (6 m or three-quarters of building height) and area (36 m²). The standard also specifies access widths for pedestrian paths (≥3 m) and vehicular routes (≥6 m), along with building height restrictions adjacent to access ways to ensure adequate ventilation and emergency access.
Details minimum plot size (15 m²), ground coverage (up to 100% for plots ≤ 25 m²), and floor space index (FSI) of 2 for smaller plots. It defines net and gross density concepts, with net density excluding open spaces and community facilities, and sets a maximum permissible net density of 500 dwelling units per hectare.
The standard identifies different cluster types such as back-to-back, interlocking, and closed clusters, describing their spatial arrangements, ventilation provisions, and access characteristics. It emphasizes the benefits and design challenges associated with each type.
Specific provisions address slum resettlement housing, including minimum ground floor plot size of 12.5 m² with the option for an additional 12.5 m² on the first floor via internal staircases, allowing a total of 25 m² per unit. The section stresses compact, safe designs that optimize scarce land while maintaining basic habitability.
This section describes group housing units within clusters with a plinth area up to 20 m² that can be expanded by adding rooms. It outlines height restrictions (maximum 15 m) and ventilation/access requirements, including at least two external open sides per dwelling unit, to ensure adequate light, airflow, and future growth.
Mandates compliance with SP 7:1983 for fire resistance ratings, fire separation, compartmentation, fire detection and suppression, and structural stability under loads including seismic and fire exposure. It includes typical fire resistance durations and emphasizes protective coatings and materials.
Maintenance guidelines focus on ensuring safety and durability through regular inspections, preventive maintenance, and corrective repairs. It covers structural monitoring, fire safety system upkeep, and servicing of plumbing and electrical installations, advocating for documentation and adherence to BIS standards.
Though not explicitly detailed, the standard infers future expansion considerations through net and gross density calculations, provision of open spaces and community facilities, and flexible cluster layouts that accommodate incremental housing growth while balancing infrastructure and livability.
Includes committee membership details, references to key standards, cluster planning concepts promoting low-rise high-density housing, and specifications such as minimum clearance for pedestrian pathway bridging. Visual diagrams illustrate cluster types and planning principles.
Lists the multidisciplinary committee members representing government departments, research institutes, housing boards, and BIS officials responsible for developing the standard. It highlights the governance framework and copyright under BIS and references the reliance on NBC SP 7:1983 for technical specifications.
Frequently Asked
For cluster housing under IS 13727, the minimum plot size is specified as 15 m². For plots up to 25 m², ground coverage is allowed up to 100%, and the Floor Space Index (FSI) permitted is 2. For plots exceeding 25 m², the provisions of IS 8888 (Part 1):1993 apply. Additionally, cluster open spaces must have a minimum width of 6 meters or three-quarters of the building height, whichever is greater, and a minimum area of 36 m². Building heights around cluster open spaces should not exceed 15 meters, and the maximum cluster width and breadth are limited to 13 meters. These regulations ensure adequate open space, proper density control, and livability.
IS 13727 describes housing clusters with various configurations. Interlocking clusters consist of groups of units joined at the back and sides, sharing common walls and having access or openings to adjoining clusters, with each dwelling having at least two sides open to external open spaces to facilitate ventilation and light, also designed to support future expansion. Cul-de-sac clusters typically feature a dead-end street layout with houses arranged around a closed loop or dead-end, which limits through traffic, offering enhanced privacy and safety. Interlocking clusters promote efficient land use, better natural ventilation, lighting, and encourage social interaction and phased development.
IS 13727 mandates that vehicular access routes leading up to cluster entrances must be at least 6 meters wide to accommodate emergency and service vehicles. Inside clusters, no building setbacks are required from pedestrian pathways or roads. The height of buildings adjacent to access paths should be at least 60% of the height of the adjoining building, with minimum clearances of 3 meters for pedestrian pathways and 6 meters for vehicular access. These provisions ensure safe and unimpeded movement for both pedestrians and vehicles while maintaining adequate ventilation and emergency accessibility.
The standard designates group open space within clusters as shared areas that are neither public nor private, granting all surrounding dwelling units joint rights of use and collective responsibility for upkeep. The minimum width for such spaces is 6 meters or three-quarters of the adjacent building height, whichever is greater, with a minimum area of 36 m². Group housing around open spaces should not exceed 15 meters in height, and cluster dimensions are limited to a maximum width and breadth of 13 meters. Additionally, clusters with ground or single-storey units are limited to 20 dwelling units to facilitate maintenance and community identity. These guidelines ensure the provision of well-maintained communal spaces fostering social cohesion.
IS 13727 provides specific provisions for slum resettlement housing by setting a minimum ground floor plot size of 12.5 m² per dwelling, with an option to add another 12.5 m² on the first floor accessible via an internal staircase, effectively doubling the usable living space to 25 m² per unit. Regarding sanitation, one set of group toilet facilities (comprising one water closet, one bath, and one washing place) is designated for every three families, with keys shared exclusively among those families to ensure responsibility for maintenance. This approach optimizes limited space while addressing hygiene and privacy needs, supporting sustainable cluster housing for economically disadvantaged populations.
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