WORKING DETAILS - MARTELLO TOWER
The tower has been restored and converted, with living and dining areas at roof level opening on to a terrace.
The roof measures 13 x 8m and its geometry is based on a 168mm-diameter CHS, which forms a ring beam at the perimeter, supported by five pairs of canted 50mm-diameter Macalloy bars. Each pair creates a V-shape, which sets up a rigid triangle to provide support and lateral restraint.
The three-dimensional form of the roof is created by curved 178 x 102mm UBs bolted to the ring beam at 1.8m centres. Timber rafters and firrings set between the UBs act as the base for a plywood deck - two skins of 9mm ply laid diagonally.
It is insulated with a double layer of rigid insulation, also laid diagonally and covered with a single-layer membrane. Three circular rooflights are raised above roof level on upstands of bonded plywood rings.
The roof tapers at the perimeter to a fine edge, supported by tapered steel brackets fixed to the ring beam.
The edge overlaps the glazed clerestory of single sheets of frameless curved glass held in place by aluminium channels.
The wall tops are protected with a DPC and a covering of zinc sheet with standing seams; the sheet accommodates both the variations in thickness and the slope of the vast walls.
You might also like...
Studio Egret West’s ‘excessive’ Hackney Wick scheme refused
Planners have rejected ‘excessive’ proposals by Studio Egret West to build homes on the site of an arts hub in Hackney Wick, east London
Historic Royal Palaces objects to Fosters’ ‘alien’ and ‘exotic’ Tulip tourist tower
Historic Royal Palaces (HRP) has joined Historic England in objecting to Foster + Partners’ proposed 305m-tall Tulip tower, saying it would be ’extremely damaging’ to the setting of the Tower of London
Charles Holland wins planning appeal for country house in Kent Downs
Charles Holland Architects has won, on appeal, the go-ahead for a ’country house clause’ home in rural Kent
AJ Architecture Awards 2018: Cultural Project of the Year
AHMM’s third phase of works at Liverpool’s Royal Court has scooped Cultural Project of the Year at the 2018 AJ Architecture Awards
Have your say
You must sign in to make a comment
Please remember that the submission of any material is governed by our Terms and Conditions and by submitting material you confirm your agreement to these Terms and Conditions.
Links may be included in your comments but HTML is not permitted.