Construction of gathers

Front sectional elevation Side sectional elevation Flue configurations shown with: - Chimney may be supported by gather unit or by separate loadbearing lintel - Front of gather shaped to form throat - may be separate - Prefabricated gather unit may be built in at time of construction of recess or retro-fitted into rectangular recess - Chimney may be supported on loadbearing lintel - Gather formed with corbelled brickwork - Throat forming front lintel - Smooth finish to gather at an angle not greater than 45º to the vertical References: see para 1.2 throat; see para 3.21(a) and (b)