|
home » sectors: schools
» BSF:
opening forces »
 When using traditional closers,
every effort is made to minimise the opening forces required on
the doorset through the following:
- Engineered factory tolerances
- Efficient adjustable door closers
- Low friction hinges
- Smoke seals
However, opening forces of 30N are difficult to achieve given
the requirement for smoke and acoustic seals and air pressure
differentials utilising traditional overhead closers. An
alternative solution would be to utilise an electro hold-open
device. Electro hold-open devices are powered by 24V DC power
supplies and will hold the door open until the fire alarm is
activated and the power to the closer is terminated.
Acoustics in Schools
Acoustic conditions in schools are now covered by the 2003
edition of Building Regulations Part E. Approved Document Part E
simply states that: "the normal way of satisfying Requirement E4
will be to meet the values given in Building Bulletin 93". This
requirement now applies to independent as well as LEA maintained
schools. BB 93: 2003 'Acoustic Design of Schools' recommends a
structured approach to acoustic design at each stage, including
specification of the acoustic performance of doors at the
detailed design stage and submission of this information for
Building Control approval. It applies to teaching and learning
spaces but consideration needs to be given to adjoining areas
such as corridors with doors or glazing separating them from
neighbouring learning spaces. Levels of airborne sound
insulation for any doorset in a wall between circulation spaces
and other spaces used by students are specified as follows.
 |
Type of space
used by
students |
Doorset (RwdB) |
Wall including
any doorset (RwdB) |
|
| Music Rooms |
35 |
40 |
|
| All other spaces |
30 |
45 |
|
At Leaderfl ush Shapland we understand that legislation and
guidance can dramatically influence design and specifications.
Our expertise and knowledge is available to you to assist in
this process, simply contact our Technical Services Department
with your enquiries, telephone: 01773 530500 or email: technical@leaderflushshapland.co.uk
|
