Attachment 8 - Environmental Noise Assessment · MCU23/0078

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Two leaves of clay brick masonry at least 110mm thick with cavity not less than 50mm between leaves

OR
Single leaf of clay brick masonry at last 110mm thick with:
(i) a rowof at least 70mm x 35mm timber studs or 64mm steel studs at 600mm centres, spaced at
least 20mm from the masonry wall; and
(i) mineral insulation or glass wool insulation at least 50mm thick with a density of at least 11 kg/m?

positioned between studs; and
(ii) One layer of plasterboard at least 10mm thick fixed to outside face of studs

OR

Single leaf of brick masonry at least 110mm thick with at least 13mm thick render on each face
OR

Concrete brickwork at least 110mm thick

OR

In-situ concrete at least 100mm thick

OR

Precast concrete at least 100mm thick and without joints.

 

 

 

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Page 11 Publication Date: 17 August 2015

ee een)

Single leaf of clay brick masonry at least 110mm thick with
(i) arowof at least 70mm x 35mm timber studs or 64mm steel studs at 600mm centres, spaced at
least 20mm from the masonry wall; and

 

 

 

 

 

 

 

 

 

(i) One layer of plasterboard at least 10mm thick fixed to outside face of studs

35
OR
Minimum 6mm thick fibre cement sheeting or weatherboards or plank cladding externally, minimum 90mm
deep timber stud or 92mm metal stud, standard plasterboard at least 13mm thick internally
Concrete or terracotta tile or sheet metal roof with sarking, acoustically rated plasterboard ceiling at least
13mm thick fixed to ceiling joists, cellulose fibre insulation at least 100mm thick with a density of at least
45kg/m? in the cavity.

45 OB
Concrete or terracotta tile or sheet metal roof with sarking, 2 layers of acoustically rated plasterboard at
least 16mm thick fixed to ceiling joists, glass wool insulation at least 50mm thick with a density of at least
11kgim? or polyester insulation at least 50mm thick with a density of at least 20kg/m? in the cavity.

Roof Concrete or terracotta tile or metal sheet roof with sarking, plasterboard ceiling at least 10mm thick fixed to
ceiling joists, glass wool insulation at least 50mm thick with a density of at least 11kg/m? or polyester
insulation at least 50mm thick with a density of at least 20kg/m? in the cavity

41
OR
Concrete suspended slab at least 100mm thick
Concrete or terracotta tile or metal sheet roof with sarking, plasterboard ceiling at least 10mm thick fixed to
38 ceiling cavity, mineral insulation or glass wool insulation at least 50mm thick with a density of at least 11
kg/m?
Version 1.1 Page 12 Publication Date: 17 August 2015

 

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