UK Structural Design Guide - Trade Conservatories 2 U 6399 pt.13 loadings for buildings CP3 chapter V pt2 ... For conservatories built as part of new buildings ... 9 UK structural

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  • UK Structural Design GuideVersion: 7.0March 2004

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    Ultraframe (UK) LtdSalthill Road,Clitheroe,Lancashire. BB7 1PE

    Fabricator First Team tel : 08704 141006Installer First Team tel : 08704 141002

    www.ultraframe.com

    Buy direct or from your nearest Ultraframe fabricator/distributor:

    SDG_Cover 5/7/05 11:29 am Page 1

  • Introduction

    scope of the UK structural design guide

    This document is principally designed for use with the BBA certified

    Victorian Roofing System, usually of floor plans up to 30m2.

    For larger structures the Ultraspan Mini-Portal, an off the shelf

    system is available for up to 7.5m clear spans, whilst a full bespoke

    aluminium portal system for 7-12m clear spans is available. Over

    this size and the company will employ steel portal structures.

    This guide should be used in conjunction with Ultraframes Survey,

    Fabrication and Installation guides (see page 3).

    For advice on any aspect of conservatory design, please contact the

    Technical Support Team on 0870 414 1008

    Typical structural analysis modelling

    specifications and standards

    BS 8118 structural use of aluminium

    BS 6399 pt.1&3 loadings for buildings

    CP3 chapter V pt2 wind loadings

    BS 5516 vertical and sloping patent

    glazing

    BS 6262 glazing for buildings

    contents

    1-4

    5-8

    9

    1 0

    11-22

    23-24

    25-28

    29-30

    3 1

    3 2

    3 3

    3 4

    35-36

    3 7

    introduction -

    accreditation/support

    scope/contents

    how to use this guide

    flow chart

    Ultraframe roofing systems

    roof loadings 1 - loading types

    roof loadings 2 - combination map

    glazing bar span charts

    valley selection guide

    tie bar tables

    good practice guidelines

    eaves beam

    corner post selection and use

    boxgutter support systems

    Lantern roof recommendations

    detail map (wind, snow, altitude)

    Towns and Cities (altitude)

    2 UK structural design guide

    Introduction

    U L T R A F R A M E is Europes leader in thedesign and manufacture of conservatory roofing systems.

    Its products are fitted every day by discerning conservatory

    installation companies - from small, local building and

    joinery businesses through to the many nationally known

    home improvement companies. One thing links them all

    together - they are safe in the knowledge.

    authority/accreditation

    No direct British or International standard exists currently for

    conservatory roofing systems. Ultraframe has, therefore, sought

    its own accreditations that will prove fitness for purpose.

    Ultraframe is the only conservatory roofing company to have

    both:-

    BS EN ISO 9001/9002 for design,

    manufacture and supply

    BBA certification (96/3261) for its white

    Victorian and Ultralite 500 roofing systems.

    The BBA states that Ultraframe roofs will

    have a life expectancy of at least 25 years

    1 UK structural design guide

    CO

    N.

    ASS

    OC

    GG

    FIS

    OPA

    TEN

    TSW

    FRC

    The Conservatory Association is a specialist division of the Glass and Glazing Federation.

    Ultraframe is fully committed to the concept of one body representing the industry, writing

    technical standards and promoting consumer awareness. Ultraframe is actively involved at

    every level in the Conservatory Association.

    In June 1994 Ultraframe was the first company to achieve ISO 9001 & 9002 for the design,

    manufacture and supply of conservatory roofing systems. To this day it remains the only

    conservatory roofing company with this accreditation.

    Ultraframe is a member of the Glass and Glazing Federation (GGF) and is actively involved in the

    Technical Working Party Committees helping to set standards of excellence for the future and

    ensuring that current requirements are adhered to.

    Ultraframe has always been the design leader in conservatory roofing systems. Continuous

    investment ensures that it will remain as Europes leading manufacturer of innovative products,

    and the achievement of over 300 UK, European and Worldwide Patents is evidence of this.

    In addition to authoritative testing by the government backed approvals body, the BBA,

    Ultraframe uses many other independent testing agencies such as Warrington Fire Research

    Centre, Leyland Test Centre and Bradford University.

    additional accreditation

    SDG_if &ib cover 5/7/05 11:16 am Page 1

  • Introduction

    3 UK structural design guide

    how to use this guide

    It is important to read this guidethoroughly before design work begins.

    Either photocopy the full size flow charton page 4 or use the tear out sheets inthe pad provided with the pack. Carrythe flow chart sheet with you throughoutthe guide, making important notes alongthe way.

    Date, reference and sign the completedform and keep it in your project file.

    4 UK structural design guide

    flow chart

    These Guidelines cover domestic conservatories of floor area less than 30 square metres at ground level which are exempt from Building

    Regulations. However many of the general recommendations given in these guidelines are applicable to all conservatories. These

    guidelines cover conservatories fitted to existing buildings. For conservatories built as part of new buildings these guidelines should be

    used in conjunction with the Building Regulations.

    These guidelines are up to date as at June 99 and are intended for guidance only. Compliance with these guidelines does not itself confer immunity

    from any legal obligations. You should obtain appropriate advice and/or consult with the relevant local authority on the specific details of the

    intended work.

    Supporting structure:- All supporting side frames incorporating window profile material, ie PVC, timber or aluminium, should be designed inaccordance with the relevant British Standards for vertical and lateral loadings. The side frames/walls must provide conservatories with overall

    lateral stability and resistance to axial loading. For specific guidance consult your side frame system supplier.

    photocopy this for each conservatory and file with project documents for future reference

    Location-

    Project Ref.

    Date:

    Snow Load

    Wind speed- __________ m/s

    If size is greater thanrecommendations on pages11-22 contact Ultraframe

    technical department

    From bar selection charts determineglazing bar type

    Determine Valley type (see page 23/24)

    1 2 3 4

    None Straps Brackets

    completed by

    Heavy Light Ultraquick

    Location Of Site -Check for extremes of altitude and snow

    load on pages 35-36

    Check guidelines for type of conservatoryrequired, check overall dimensions

    From tables & map on page 9-10, determineSnow Load (kN/m2)

    Exposure cat

    Wind Snow is dominant

    Transoms

    Hips

    Poly0.06kN/m2

    4/4 Glass0.22kN/m2

    6.4/6.4+6/6 Glass0.33kN/m2

    Heavy Light

    N/A 3 way 5 way _ _ _ Qty.

    Select Eaves Beam(see page 31)

    Select Boxgutter(see page 33)

    Determine Tie Bar requirements(see pages 25-28)

    From tables on page 9, determineif snow load or wind is the dominant loadcase for required Roof Style and Covering

    If the Wind load is thedominant load caseContact Ultraframe

    From map on page 10 determine Basic WindSpeed (m/s) and appropriate exposure category

    5 6 7 7+ 7B

    5 6 7 7+ 7B

    ultraframe support material

    A wide range of technical documentation is available to support fabricators/installers of

    Ultraframe systems. This includes exhaustive fabrication manuals, detailed on-site installation

    guides, a comprehensive guide for surveyors and wide ranging information in the independently

    authored BBA certificates - these certificates are an excellent source of information on

    ventilation, condensation, durability etc. and are ideal for satisfying Building Control Officers

    A wide range of training courses are on offer including one on

    structural design criteria

    fabrication guide installation guides ultramate

    sd guide (inner) 5/7/05 11:10 am Page 2

  • 6 UK structural design guide

    Ultraframes roofing systems

    Classic Victorian SystemB

    3

    4

    2

    structure diagram multi eaves beam ridge

    1 2 3

    valley glazing bars

    5

    5

    4

    5 UK structural design guide

    Ultraframe can supply a conservatory roof to satisfy the most unusual requests and retain

    structural integrity due to our unique design skills and fifteen years experience in the industry.

    The principles of these roofs and the critical details are outlined according to Ultraframes

    product range.

    All supporting side frames incorporating window profile material, ie P