Tiêu chuẩn iso 01288 4 2016

© ISO 2016 Glass in building — Determination of the bending strength of glass — Part 4 Testing of channel shaped glass Verre dans la construction — Détermination de la résistance du verre à la flexion[.]

Glass in building — Determination of

Part 4:

Ve r da s la co struction — Déte mination de la résista c du ve r

à la fle xion —

Partie 4 : Essais sur ve r profilé

Fir t edition

2 16-0 -1

Refer ence n mb r

ISO 1 8 -4:2 16(E)

COPYRIGHT PROTECTED DOCUMENT

© ISO 2016, P blshed in Sw itz rlan

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written permis ion Permis ion c n be req esed from either ISO at the ad r es below or ISO’s member bod y in the c u try of

the r eq eser

ISO c pyrig ht ofic

C de Blan on et 8 • C 4 1

CH-1 14 Vernier, Geneva, Sw itzerlan

Tel + 12 7 9 011

Fax 412 7 9 0 4

F reword i v

1 Sc ope 1

2 Nor mati ve r eferenc es 1

3 Terms and definitio s 1

4 Symbols 2

5 A pparatus 2

5.1 Tes ing machine 2

5.2 Measuring ins rument 3

6 S mple 3

6.1 Numbe of spe imens 3

6.2 Spe imen dimensions 3

6.3 Spe imen con ition 3

7 Proc ed re .4

7.1 Dete mination of dimensions of each spe imen 4

7.2 Bending tes 4

8 Evaluatio 5

9 Test rep rt 5

A nne x A (informative)Proper ties of channel shaped glas 7

Biblog raphy 8

ISO (he Int ernational Org nization for Stan ardization) is a worldwidefede ation of national s an ards

b dies (ISO membe b dies) The work of pr p ring Int ernational Stan ards is normaly car ied out

through ISO t ech ical committ ees Each membe b dy int er st ed in a subje t for w hich a t ech ical

committ ee has be n es a lshed has the right t o be r pr sent ed on that committ ee Int ernational

org nizations, g ove nmental an non-g ove nmental, in laison with ISO, also take part in the work

ISO cola orat es closely with the Int ernational Ele trot ech ical C mmis ion (IEC) on al matt ers of

ele trot ech ical s an ardization

The proc d r s used t o develo this document an those int en ed for it furthe maint enanc ar

desc ibed in the ISO/IEC Dir ctives, Part 1 In p rticular the dife ent a pro al c it eria ne ded for the

dife ent ty es of ISO document should be not ed This document was draft ed in ac ordanc with the

edit orial rules of the ISO/IEC Dir ctives, Part 2 ( e www.iso.org dir ctives)

A tt ention is drawn t o the p s ibi ity that some of the element of this document ma be the subje t of

p t ent right ISO shal not be held r sp nsible for identifying any or al such p t ent right Detais of

any p t ent right identified d ring the develo ment of the document wi be in the Introd ction an / r

on the ISO ls of p t ent de larations r c ived ( e www.iso.org p t ent )

Any trade name used in this document is information given for the convenienc of use s an does not

cons itut e an en orsement

F or an ex lanation on the meaning of ISO spe ific t erms an ex r s ions r lat ed t o conformity

as es ment, as wel as information a out ISO’ s adhe enc t o the WTO principles in the Te h ical

Bar ie s t o Trade (TBT) se the fol owing URL: F or word - Sup lementary information

The committ ee r sp nsible for this document is ISO/TC 1 0, Glas s in b idin , Subcommitt ee SC 2, Use

c ons ide atio s

ISO 1 88 consis s of the folowing p rt , un e theg ene al title Glas s in b idin — Dete min tio o the

bendin s tr n th o glas s:

— Part 1: Fu damental s o tes tin glas s

— Part 2 : Co xial do ble rin tes t o flat s pec imens w ith large tes t s urf c e ar as

— Part 3 : Tes t w ith s pec imen s up orted at t wo p ints (fur p int bending )

— Part 4 : Tes tin o cha nel sha ed glas s

— Part 5: Co x ial do ble rin tes t o flat s pec imens w ith s mal tes t s urfce ar as

Glass in building — Determination ofthe bending

Part 4:

This p rt of ISO 1 88 spe ifies a method for det ermining the ben ing s r ngth (defined as the prof ile

ben ing s r ngth) of wir d or u wir d chan el sha ed glas for use in buidings

The l mitations of this p rt of ISO 1 8 ar desc ibed in ISO 1 88-1

2 Normati ve r eferences

The folowing document , in w hole or in p rt, ar normatively r fe enc d in this document an ar

in ispensa le for it a pl cation F or dat ed r fe enc s, only the edition cit ed a pl es F or u dat ed

r fe enc s, the lat es edition of the r fe enc d document ( inclu ing any amen ment )a pl es

ISO 48, Ru be , v ulc ani zed or thermo las ic — Determin tion o h rdnes (h rdnes s betwe n 10 IRHD

a d 10 IRHD)

ISO 1 8 -1, Glas s in b idin — Dete min tio o the bendin s tr n th o glas s — Part 1: Fu damental s o

tes tin glas s

NOTE ISO T 160 SC1 is stil not certain as to whether there is a ne d for a stan ard on the prod ct “Wired

or u wired chan el shaped glas ”

3 Terms and definitions

F or the purposes of this document, the folowing t ermsand definitions a ply

3.1

profi e bending strength

q otient of the ma imum ben ing moment an the se tion mod lus of a chan el sha ed glas

Note 1 t o entry: Due t o sideways movement of the flang s of the chan el shaped prof ile in the b n ing test, the

specimens bre k almost ex clusively at he transition from web t o flang (i.e not at the e treme edg of the flang

or the face of the web) Conseq ently, the prof ile b n ing strength is not the glas strength, but rather a value

representing the strength of the prof ile

4 Symbols

F

ma

ma imum for e

NOTE Whe e the ben ing role s ar not firmly at ached t o the t es ing machine,

but ar laid on the spe imen, the for e r sulting from their weight is ad ed t o the

ma imum measur d for e

N

h

F

h

W

L

s

M

b

P

b

3

Z

F

3

Z

W

3

5.1 Testing machine

The ben ing t es shal be car ied out using a suita le ben ing t es ing machine, w hich shal incorp rat e

the folowing featur s

a) The s r s ing of the spe imen shal be ca a le of being a pled from z ro up t o a ma imum v lue in

a manne w hich minimiz s shock an is st eples

b) The s r s ing devic shal be ca a le of the spe if ied rat e of s r s ing

c) The t es ing machine shal incorporat e a lo d measuring devic with a l mit of e ror of ± ,0 % within

themeasuring rang e

d) The sup orting role s an thebending role s ( e Figur 2) shal ha e a diamet er of 5 mm and a

length of not les than 5 0 mm Al the role s shal be fr e t o rotat e

e) The air b gs ( e Figur 2) shal ha e an o e al dimension of 3 0 mm × 1 0 0 mm × 2 0 mm an

shal ha e a safe working pr s ur not les than 1 0 k a The air b gs shal be pr s uriz d t o

7 k a for chan el sha ed glas with a nominal width up t o 3 0 mm an 5 k a for channel sha ed

glas with a nominal width o e 3 0 mm

f) The spr ade plat es ( e Figur 2) shal ha e dimensions of 3 0 mm × 1 00 mm an be suff iciently

ro us t o adeq at ely transmit the for e int o the air b gs

5.2 Measuring instr uments

The folowing measuring ins rument ar r q ir d:

— a measuring ins rument ena lng the web width, B , of the spe imen t o be measur d t o the near s

1mm an the flang e height, H, of the spe imen t o be measur d t o the near s 0,5 mm;

— a measuring ins rument al owing the thick es of the spe imen flang e, h

F , an web, h

W , t o be

measur d t o the near s 0,1 mm

6.1 Number of specimens

The n mbe of spe imens t o be t est ed shal be det ermined depen ing on the con denc lmit r q ir d,

espe ialy with r g rd t o es imating the extr mes of the s r ngth dis ribution ( e ISO 1 8 -1 for a

discus ion of n mbe s of spe imens)

The dimensions of the spe imen web, B , flang e height, H, the web thick es , h

W , the flang e thicknes , h

F ,

an the anglebetwe n the web an the flang es shal be within thet ole anc s spe ified for the prod ct

t o be t est ed

The length of the spe imens shal be 2 1 0 mm ± 5 mm

6.3 Specimen c ondition

The spe imens shal be st or d in the t es ing environment ( e 7.2)for at leas 4 h befor being t est ed

Key

1 flang e

2 principal ax is

Figure 1 — Cros section of specimen

7 Proc edure

7.1 Deter mination of dimensions of e ch specimen

The width of the web, B , the height of the flang e, H, an the thick es of the flang es, h

F , shal be measur d

at the en s of the prof iles an in the c ntr of the spe imen The web thicknes , h

W , shal be measur d

only at he en s ( e Figur 1 an Figur 2)

7.2 Bending test

The spe imens shal be mou t ed as shown in Figur 2

Key

s

2 0 0 mm ± 4 mm

Figure 2 — Ar ang ement of specimen in testing machine

R ub e s rips, 6 mm thick an of hard es of not les than (40 ± 1 ) IRHD, ( in ac ordanc with ISO 48),

shal be plac d betwe n the spe imen and the sup orting role s

When t es ing with the web in t ension, a fo m sla (ex an ed p ly styr ne or simiar), not les than

1 0 0 mm in length an of width 1 mm les than the int ernal spac between the flang es, shal be

plac d un e the air b g t o pr vent it from a plying the lo d dir ctly t o the flang es

The ben ing tes shal be car ied out at (2 ± 5) °C with the r lative h midity between 40 % an

7 % During the t es , the t empe atur shal be k ept cons ant o 1 °C in orde to avoid develo ment of

the mal s r s es

The spe imen shal be bent with a u iformly inc easing ben ing s r s at a rate of (2 ± 0,4 ) MPa/s

unti faiur oc urs The ma imum for e, F

ma , shal be measur d an the time tak en to r ach this

for e shal be r corded

8 Evaluation

The prof ile bending s r ngth, P

b , shal be calculat ed in ac ordanc with F ormula (1):

bB

ma

S

P

L

Z +

8

(1)

The a pro riat e v lue of se tion mod lus, Z, used for the calculation, depends on w hethe the flang e is

in t ension ( Z

F

)or the web is in t ension ( Z

W )

The ben ing s r ngth shal be calculat ed with the se tion mod lus an weight for the nominal

dimensions of the profile, pro ided that the pe mis ible dimensional t ole anc s for the prof ile ar not

ex ce ded Values for G , Z

F

an Z

W

ar given in Annex A for a non-exhaus ive ls of commonly a aia le

channel prof iles Whe e the pe mis ible dimensional t ole anc s ar ex ce ded, the se tion mod lus an

weight hal be calculat ed sep rat ely for each spe imen

9 Test r eport

The t es r p rt hal inclu e the fol owing information:

a) a r fe enc t o this p rt of ISO 1 88, i.e ISO 1 8 -4;

b) desc iption of the prof ile, eithe b trade name or b spe ifying the nominal dimensions of web

width, flang e height, web thicknes an flang e thicknes ;

In the case of chan els with wir , inclu e a desc iption of the wir ;

c) theangleof deviation from a right angle, if the a p r nt deviation of the flang e from a right angle is

visualy a par n

d) n mbe of spe imens;

e) for each spe imen:

1) measur d thick es es of flang es an web t o the near s 0,1 mm;

2) measur d web width t o the near s 1 mm an flang e height t o the near s 0,5mm;

3) w hethe t est ed with flang e or web in t ension;

4 ) se tion mod lus an weight used for calculation;

5) prof ile s r ngth, P

b , in MPa t o the near s 1 MPa;

6) time t o br akag e in se on s, t o the near s 1 s

No a e ag efor the measur d r sult shal be given;

f) the n mbe of spe imens not broken in ac ordanc with Clause 8;

g) any deviation from this p rt of ISO 1 8 w hich ma have afe t ed the r sult

A nne x A

Properties of channel shaped g lass

Ta le A.1 gives v lues of the self weight an se tion mod lus for some of the mor commonly a aia le

channel sha ed glas prod ct

Table A.1 — Values of G, Z

F and Z

W for a no -ex austive selection of commo ly av ai able

channel sectio s

Dimensions in milimetr es

W idth of

web

Heig t of

flang e

Glas

thick es

G

N

Z

F

mm 3

Z

W

mm 3

Bibl og raphy

[1] ISO 1 2 3-1, Glas s in b idin — B as ic soda lme s ilc ate glas s produc ts — Part 1: De initio s a d

gene al p ys ic al a d mecha ic al pro erties