SPACE SEPARATION BETWEEN BUILDINGS Example

SPACE SEPARATION BETWEEN BUILDINGS Example SPACE SEPARATION BETWEEN BUILDINGS â€" Coursework Example > List of Figures and TablesFiguresFigure 1 â€" Wall surface provisions for recreation or assembly building of more than one storey 5Figure 2 â€" Determining a notional area using a protractor 10 Figure 3 â€" Site floor plan plates showing the location of JB Firth and Maudland buildings 11Figure 4: (a) - No internal compartmentation + 100% UPA 13 (b) - Compartment floor +100% UPA 15 (c) - No internal compartmentation + only glazing UPA 17 (d) - Compartmentation floor + only Glazing UPA 19TablesTable 1 - Permitted amount of unprotected areas in small residential flats or other residential purposes 7Table 2 - Unprotected areas permitted in compartments or small buildings 8PART AIntroductionThe building regulations in part B4 provide the guidelines for external fire spread with regard to the height of the building, its intended use and the position of the building relative to other surrounding buildings. The possibilities of fire spread to adjacent buildings depends on the distance sep arating the two buildings, the fire protection measures provided on the external surfaces of the building, the intensity of fire and the risk it poses to the occupants of the building. The requirements cover on the provisions for external walls and the roof; separation distance, fire spread over these parts of the building, and across the boundary to other surrounding buildings beyond the boundary. The main aspects of external fire spread covered in this part include; the requirements of part B4 of ADB, and a review of the standard guidance with regard to consideration of space separation, methods to asses space separations and allowable unprotected areas, boundary distances, site boundaries and relevant boundaries. Functional requirements of external fire spread space separation The external walls of a building should be built with appropriate standards of fire resistance to prevent ignition, combustibility and spread of fire over the walls and through the boundary of separation to other closer buildings. The materials used are required to be of limited combustibility. If the boundary of separation is 1000 mm, then a wall with reduced standards is acceptable, and if it is 1000 mm, then measures need to be taken to restrict the combustion of the walls and spread of fire. The fire resistance performance standards of the structural elements used in the construction of walls are provided in appendix A, Table 1A of ADB. The factors that affect these standards include; the density of fire load, the height between the top floor and ground level, type of occupancy, and whether the building has basements. Sometimes, portal frames are used in single storey commercial and industrial buildings where fire resistance may not be needed. The guide recommends that the external walls of such buildings have to be fire resistance if they are close to the relevant boundary to avoid the spread of fire to nearby buildings. If the separation distance to the boundary for any bui lding other than recreation or assembly building of more than one storey is 1000 mm, no provision is indicated. If the purpose of the building is recreation or assembly and is more than one storey, with public access to the part of the building, then a class 0 surface is to be provided as indicated in the figure below: