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H

Y SWYDDFA GYMREIG

WELSH OFFICE

The Building Regulations 2000

Drainage and waste disposal

APPROVED DOCUMENT

H1 Foul water drainage

H2 Wastewater treatment systems

and cesspools

H3 Rainwater drainage

H4 Building over sewers

H5 Separate systems of drainage

H6 Solid waste storage

Coming into effect 1 April 2002

The Stationery Office

2002

EDITION

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MAIN CHANGES IN THE 2002

EDITION

This edition of the Approved Document H,Drainage and solid waste, replaces the 1992edition. The main changes are:

H1 Foul Drainage

a) Low flush WCs guidance is provided forthe design of sanitary pipework serving suchappliances.

b) Condensate from boilers guidance isprovided on disposal of condensate.

c) Guidance has been given to clarify that therequirements of H1 apply to the whole drainagesystem including associated private sewers.

d) Use of pumping stations guidance hasbeen added to improve protection of low-lyingproperties.

e) Protection from rats in drains theguidance has been modified.

f) Grease separators guidance is given ontheir provision in commercial hot foodpremises.

g) Drain pipe sizes drains/sewers servingmore than 10 dwellings should have a minimumdiameter of 150mm.

h) A general requirement of drainage is nowincluded. This was originally the subject ofSection 21 of the Building Act 1984.

H2 Wastewater treatment systems andcesspools

i) Drainage fields from septic tanks guidanceis provided on design and siting.

j) Reed beds have been added as a means

of secondary treatment.

k) Maintenance information a notice shouldbe provided in an appropriate place setting outmaintenance procedures for non-mainsdrainage systems.

H3 Rainwater drainage

l ) Sustainable rainwater drainage guidanceon the use of infiltration drainage systems isprovided.

m) Rainfall intensity additional guidance isprovided.

Approved Document HDrainage and waste disposal

n) Drainage of certain paved areas for accessor waste disposal these areas should be freedraining.

H4 Building over sewers

o) This is a new requirement dealing withsituations previously covered by section 18 of

the Building Act 1984 (Section 18 is repealed,subject to transitional provisions, with effect for1 April 2002).

H5 Separate systems of drainage

p) This new requirement sets out thecircumstances where separate systems ofdrainage are required.

H6 Solid waste storage

(was previously H4)

q) Storage space for dwellings providesguidance on space for the collection of wasteto be recycled.

r) Access to storage areas guidance isprovided on steps and slopes.

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Approved Documents

The following documents have been approvedand issued by the Secretary of State for thepurpose of providing practical guidance withrespect to the requirements of the BuildingRegulations 2000.

Approved Document A Structure: 1992Edition, fourth impression (with amendments)1994, further amended 2000

Approved Document B Fire safety: 2000Edition, amended 2000

Approved Document C Site preparation andresistance to moisture: 1992 Edition, secondimpression (with amendments) 1992, furtheramended 2000

Approved Document D Toxic substances:amended 1992, further amended 2000

Approved Document E Resistance to thepassage of sound: 1992 Edition, secondimpression (with amendments) 1992, furtheramended 2000

Approved Document F Ventilation: 1995Edition, amended 2000

Approved Document G Hygiene: 1992Edition, second impression (with amendments)1992, further amended 2000

Approved Document H - Drainage and wastedisposal: 2002 Edition

Approved Document J Combustion

appliances and fuel storage systems: 2002Edition

Approved Document K Protection fromfalling, collision and impact: 1998 Edition,amended 2000

Approved Document L1 Conservation of fueland power in dwellings: 2002 Edition

Approved Document L2 Conservation of fueland power in buildings other than dwellings:2002 Edition

Approved Document M Access and facilities

for disabled people: 1999 Edition, amended2000

Approved Document N Glazing - safety inrelation to impact, opening and cleaning: 1998Edition, amended 2000

Approved Document to support regulation 7 Materials and workmanship: 1999 Edition,amended 2000

Drainage and waste disposalApproved Document H

Printed in the United Kingdom for The Stationery Office

TJ5378 C275 10/01

HAPPROVED DOCUMENTS