(S2.3), (S2.5)SProvisions deemed to satisfy the standardsACCESS TO BUILDINGS(S2.3) The requirements of S2.3 as regards a firm surface suitable for disabled people will be met by -a. 50mm concrete slabs bedded on granular material; orb. 30mm tarmacadam to BS4987: Parts 1 and 2: 1993 laid on 100 mm of consolidated hardcorebottoming; orc. 50mm clay or calcium silicate pavers to BS6677: Part 1: 1986, laid in accordance with BS6677:Part 2: 1986; ord. 60mm concrete paving blocks to BS 6717: Part 1: 1993, laid in accordance with BS6677: Part2: 1986.PRINCIPAL ENTRANCE(S2.5) The requirements of S2.5 will be met by a lobby complying with any of the examples in the diagram tothis specification -Diagram to (S2.5): Entrance lobbies1.8m 1.8m2m2.3m300mm300mm1.5m1.5m2m2.4m300mm300mm300mm1.5m1.8mNote:Doors to lobbies must have a clear opening width of at least 800 mm.Amdt: December 1999 18S