BS 648

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BRlTlsH STANDARD

648 :

1964

UDC 691 : 624.045

SCHEDULE

OF

WEIGHTS

OF

BUILDING MATERIALS

BRITISH

STANDARDS

INSTITUTION

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B S * b 4 8

6 4

m

3 6 2 4 b b 9

0038960 3

m

SCHEDULE OF

WEIGHTS OF

BUILDING MATERIALS

B.S.

648 :

1964

Incorporating amendments issued

October, 1968 ( A M D 105) and October, 1969 (AMD 344)

BRITISH STANDARDS INSTITUTION

Incorporated by Royal Charter 2 PARK STREET, LONDON, W IA 2BS

Telex: 266933 Telephone: 01-629 9OOO

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--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---B.S. 648 : 1964

THIS BRITISH STANDARD, having been approved by the Building Divisional Council, was published under the authority of the General Council on 31st December, 1964. The Institution desires to call attention to the fact that this British Standard does not purport to include all the necessary provisions of a contract.

In order to keep abreast of progress in the industries con- cerned, British Standards are subject to periodical review. Suggestions for improvements will be recorded and in due course brought to the notice of the committees charged with the revision of the standards to which they refer.

A complete list of British Standards, numbering over 9,000,

fully indexed and with a note of the contents of each, will be found

in

the BSI Catalogue which may be purchased from

BSI Sales Department. The Catalogue may be consulted in many public libraries and similar institutions.

British Standards are revised, when necessary, by the issue either of amendment slips or of revised editions. It is important that users of British Standards should ascertain that they are in possession of the latest amendments or editions.

The following R.S.I. relcrcnccs relate IO the work on this standard: Committee rcference B/19 Draft for comment D63/9318

2

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--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---B.S. 648 : 1964

BRITISH STANDARD SCHEDULE OF

WEIGHTS OF BUILDING

MATERIALS

FOREWORD

The title of this standard should not be taken to imply that all of the materials quoted are necessarily used solely or even principally in building.

This schedule was first published in 1935 as an attempt to provide a

solution to the problems which had arisen through structural and other calculations being based on different data for the weights of materials con- cerned. The 1949 revision was undertaken with a view to making the information more complete by the inclusion of certain extra materials, together with such changes in the data

as

had been found to be necessary.

The present revision continues this process of improvement and development. It contains additional new materials which have since come into use for building purposes and amends the weights of many other materials in the light

of up-to-date information. Some materials have been introduced into the standard which will not be present as such in a completed building but a

knowledge of whose weights is important for calculations both prior to and during the course of execution of the works. Weights of blockwork, brickwork and stonework have, however, been given in preference to weights of blocks, bricks and stone, as likely to be more helpful to users in view of the main purpose of this standard. At the same time the opportunity has been taken of

including in the schedule much of the supplementary information previously given in an appendix.

It has not been found possible to include weights for the many different

forms of composite construction coming into use, many of which are still in process of development and capable of

many

variations and combinations; weights of as many individual component materials as were feasible have, however, been given, from which it is hoped that users will be able to derive any composite weights required. The committee was aware, nevertheless, of

certain integrally composite materials, which are difficult to describe generic- ally, mainly specialized products of individual manufacturers and which it was felt to be inadvisable to attempt to cover in a standard schedule.

The data has been recast under each alphabetically arranged main heading, through subsidiary headings of diminishing order. The main headings generally denote materials; however, some denote functions, where it is felt that these will be more helpful to the reader. The alphabetical arrangement of main headings has been perpetuated; but it has not been found possible to favour one system universally for the sub-headings where commonness of useagc has in many instances been felt likely to be more useful; whilst dimen-

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--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---B.S. 648 : 1964

sional criteria have been applied t o headings of lesser orders. The former column headings and

rulings

have been eliminated as superílous.

The object of the schedule is to standardize the data employed in calculations rather than to provide more exact data for this purpose. The 'standard' weight of a material, as given in the schedule, is not necessarily the mean between the extreme weights, but a fau-average value and may be regarded as

sufficiently accurate for general purposes in calculating dead loads in building work. In cases where extreme accuracy is required the actual material to be employed should be weighed and the most adverse conditions of use taken into account,

Wherever possible, a standard weight has been quoted, but in many instances it has been necessary to include tolerances on each side of this figure, There were some cases where, owing to many different densities being produced, often for as many different purposes of equal importance, it was

not possible to choose a single notional figure of any particular significance to which tolerances might be applied, and here a range has been given instead.

The committee having in mind the foregoing practical considerations, no weight has been given to more than one decimal place. The use of decimals has been standardized in preference to fractions, for dimensions as well as for weights.

Where maximum and minimum weights are given in this schedule they represent the extremes of the samples investigated and afford some indication of the variations in weights which may be encountered. They should not be taken as the absolute maximum or minimum weights of the material in

question.

In preparing this schedule every care has been exercised to ensure that the standard weights represent average materials of normal composition or structure and, where described as 'as laid', íked in the usual manner. In general, weights of appropriate materials relate to a moisture content state of the material when in approximate equilibrium with theexterior atmosphere.

The references to other British Standards given in brackets in the schedule are intended for identification only and are not to be taken to imply that the weights have been derived from the British Standard quoted. Where the standard for the material specifies weights, however, the figures in the schedule have in general been based upon them.

Notwithstanding the .fact that the Fifth Edition of the Standard Method of Measurement of Building Works, which was published during the prepara- tion of the present schedule specifies the yard rather than the foot as the unit of measurement in most Sections, this present schedule standardizes the use of the foot as being most generally useful. The quotation of a 1-inch unit of

thickness has, however, been adhered to in general except where a material is

normally made principally in much lesser thicknesses.

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--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---As altered O c / . 1968

To

help overcome confusion arising from the custom of different industries using different series of thickness gauges (i.e. Birmingham, English Zinc, and Standard Wire) and for the sake of uniformity, the thicknesses in decimals of

an

inch have been given first in the schedule followed in parentheses by the customary gauge appropriate to the particular material. Only a few typical thicknesses used in building have been given for each material, but the weights

uf

other gauges may be derived by proportional calculations using the decimal inch equivalents from the tables given in Appendix A.

Where thicknesses of material greater than 1

in

are customarily employed but the weights are non-proportional, then the weights of a selection of representative thicknesses have been given.

Some materials are produced in a wide range of sizes, often not solely for building purposes and here, in order to keep the amount of space occupied within reasonable bounds, an attempt has been made to limit the information to representative sizes and, wherever possible, to those most commonly used

in

building. The space formerly occupied by listing many sizes of some materials has been reduced and information on other entirely different materials substituted to take its place and so increase the general usefulness of the standard.

NOTE 1. This standard was prepared in imperial units from which the metric values were derived. Both sets of values are of the same order of accuracy.,

NOTE 2. The data given in the standard are in units of mass either per unit length, or per

forces in newtons imposed by the dead loads of the materials may be obtained by multiplying unit area, or per unit volume. For most purposes of structural calculation in S1 units the by 10 (strictly 9.80665) the values given in kilogrammes in the schedule. The degree of approximation implied by this is commensurate with that already indicated in the data given in the schedule, for the reasons explained in the Foreword.

SCHEDULE

Aggregates

Coarse

Normal weight, e.g. natural

aggregates 90 f 10 lb/ft3 (1442 f 160 kg/m3) Lightweight, e.g. clinker,

foamed slag, expanded clay and sintered

pulverized-fuel ash 20

-

50 lb/ft3 (320.4

-

800.9 kg/m3) Heavyweight, e.g. barytes,

magnetite and ilmenite 145 f 5 Ib/ft3 (2323 80 kg/m3) Steel shot 260 f 10 lb/ft3 (4245 f 80 kg/m3)

Normal weight, e.g. sand 100 f 10 Ib/ft3 (1602

rt

160 kg/m3) 6

Fine

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B.S. 648 : 1964

Aggregates (cont) Fine (cont)

Lightweight, c.g. clinker, foamed slag, expanded clay and sintered pulverized-fuel ash Heavyweight, e.g. barytes,

magnetite and ilmenite Steel shot

Combined (‘aIl-in’ ballast)

Aluminium Cast Wrought forms Sheet Flat 0-048 in (18 SWG) 0 4 3 6 h (20 SWG) 0.028 in (22 SWG) 0.022 in (24 SWG) Corrugated (B.S. 2855) 35

-

65 Ib/ft3 (560.6

-

1041 kg/n13) 155 j=5 Ib/ft3 (2483

-t

80 k ~ 3 m ~ ) 260 & 10 lb/rt3 (4165 160 kg/n?) 125

rt

5 Ibjft3 (2003 3: 80 kg/1n3) 173 Ib/ft3 (2771 kglm9 0.7 Ib/ft2 (3.4 kg/mz) 0-5 _{lb/ft2 (2.4 kg/m2)} 0.4 _{lb/ft2 (2.0 k@m2)} 0.3 Ib/ft2 ( I -5 kg/m2) (inchding-20 per cent added

weight for laps ‘as laid’) 0.048 in (18 SWG)

0.028 in (22 SWG) 0.022 in (24 SWG) Other wrought forms

Asbestos

Felt per 1 in (25.4 mm) thick Fibres, sprayed (including binder)

Asbestos cement Sheeting Flat 0.25 in (6.4 mm) Wallboard Semi-compressed Fully-compressed Corrugated

(including 10 per cent added weight for laps)

Corrugations 2.875 in (73.0 mm) pitch (B.S. 690) Corrugations 5.75 in (146.1

m)

pitch (B.S. 690) 7 0.9 Ib/ft2 (4.4 kg/m2) 0.6 Ib/ft3 (2.9 kg/n12) 0-4 Ib/ft2 (2.0 kg/m2) 173 lb/ft3 (2771 kg/n13) 0.8 Ib/ft2 (3.9 kg/rn2) 5-15 Ib/ft3 (80-240 k g i d ) 1.4 lb/ft2 (6.8 kg/m2) 2.3 lb/ft2 (1 1.2 kB’mz) 2.5 Ib/ft2 (12.2 kg/m2) 3.4 Ib/ft2 (16.6 kg/m2) 3.4 Ib/ft2 (16.6 kg/m2) /- \ I

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--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---B.S. 648 : 1964

Asbestos cement (cont)

Corrugated (con0 Sheeting (cont) 3.5 in (88.9 mm) corrugations, 15 in (381.0 mm) pitch (B.S. 690) 4.5 lb/ft2 (21.9 kg/m2) Asphalt Roofing 2 layers, 0.75 in Damp-proofing (B.S. 1097 and 1418) (19.1 mm) (B.S. 988 and 1162) 8.6 lb/ft2 (41.9 kg/m2) 8.3 Ib/ft2 (40-5 kg/m2) 11.0 Ib/ft2 (53.7 kg/m2) 12.4 Ib/ft2 (60.5 kg/m2) 11 f 1 Ib/ft2 (53.7 f. 4-9 kg/m2) 0.75 'in (1 9.

r

mm) 1.0 in (25.4 mm) 1,125 in (28.6 mm) 1 in (25.4 mm) thick Flooring (B.S. 1076, 1410 and 1451) Road and footpaths (B.S. 594 and

1446)

0.5

in

(12.7 mm)

0.75 in (1 9- I mm)

Battens

Slating and tiling, 1.5 in X 0.75 in (38.1 mm X 19.1 mm) softwood 4 in (101.6 mm) gauge

Bitumen damp-proof courses (B.S. 743) Hessian hase (Type 5A)

Fibrc felt (Type

5B)

Asbcstos bascd (Type 5C)

Hessian base and lead (Type 5D)

Fibrc fclt and lead (Type

5E)

Asbestos base and lead (Type 5F)

Bitumen roofing felts (B.S. 747) Bitumen felts (fibre base)

Saturated bitumen (Type I A) Sandcd bitumen (Type 1B)

6-0 Ib/ft2 (29.3 kg/m2) 9.0 lb/ft2 (43.9 kg/m2) 0.7 lb/ft2 (3.4 kg/m2) 0.8 _{lb/ft2 (3.9 kg/m2)} 0.7 ¡blitz (3.4 kg/m2) 0.8 Ib/ft2 (3.9 kg/m2) 019 lb/ft2 (4.4 kg/m2) 0.9 Ib/ft2 (4-4 kp/m2) 1.0 Ib/ft2 (4.9 kg/m2) 0.1 lb/ft2 (0.5 kg/m2) 0.2 Ib/ft2 (1 *O kg/m2) 0.4 Ib/ft2 (2.0 kg/m2) 0.5 Ib/ft2 (2.4 kc/m2)

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B.S. 648 : 1964

Bitumen roofìng felts (cont) Bitumèn felts (fibre base) (cont)

Self-finished bitumen (Type 1C) 0.2* Ib/ft2 (1.0 kg/m2)

0.3* Ib/ft2 (1.5 kg/m2)

0*4* Ib/ft2 (2.0 kg/m2)

0.5* lb/ft2 (2.4 kg/m2)

O-6* Ib/ft2 (2.9 kg/m2) Coated and sanded bitumen felt

(Type

m

0.4 Ib/ft2 (2.0 kg/m2)

0.5 Ib/ft2 (2.4 kg/m2)

0.6 lb/ft2 (2.9 kg/m2) Mineral surfaced bitumen (Type

1E)

0.7 Ib/ft2 (3.4 kg/m2) Reinforced bitumen felt (Type 1F) 0.2 lb/ft2 (1 -0 kg/m2) Saturated bitumen asbestos

Bitumen felts (asbestos base)

(Type 2A) 0.1 Ib/ft2 (0.5 kg/m2)

0.2 Ib/ft2 (1 -0 kg/ma) Self-finished asbestos (Type 2B) O-3* lb/ft2 (1.5 kg/m2)

0*4* lb/ft2 (2.0 kg/m2) 0.5' lb/ft2 (2.4 kg/m2)

asbestos (Type 2C) 0.7 Ib/ft2 (3.4 kg/m2) Saturated fluxed pitch (Type 3A) 0.1 Ib/ft2 (0.5 kg/m2>

0.2 Ib/ft2 (1.0 kg/m2) Sanded fluxed pitch (Type 3B) 0.4 Ib/ft2 ( 2 4 kg/m2)

0.6 Ib/ft2 (2-9 kg/m2) Mineral surfaced bitumen

Fluxed pitch felts (fibre base)

Impregnated flax felts and hair felts Impregnated flax (Type 4A)

Black

Roofing 0.4 lb/ft2 (2-0 kg/m2) Sarkíng 0-3 Ib/ft2 (1.5 kg/m2) Black sheathing 0.2 lb/ft2 ( 1 -0 kg/m2) " .

No. I Inodorous 0.3 Ib/ft2 (1.5 kg/m2)

No. 2 Inodorous 0.2 lb/ft2

_(i

-0 kg/m2)

Brown sheathing 0.2 Ib/ft2 (1.0 kdm2)

Brown

Impregnated hair (Type 4B)

Black

Black hau sheathing 0.4 Ib/ft2 (2.0 kg/m?

When fine sand is used in lieu of talc this weight i s increased by approximately

0.1 lb. (0.5 kg/m') r +

9

NOTE. For structural calculation in SI units, attention is drawn to NOTE 2 of thc Foreword.

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--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---im6egnated hair (type 4B) (cont) Brown bituminous hair Bitumen felts (glass fibre base)

Brown

Bitumen glass fibre (Type 5A) Mineral surfaced bitumen glass

fibre (Tvpe 5B)

Blockwork, walling Clay

Hollow, per 1 in (25.4 mm) thick Perforated (approximately 50 per

cent perforated) Medium density, per 1 in

(25.4 mm) thick High density, per 1 in

(25.4 mm) thick Concrete

Ballast and stone aggregate Cellular per 1 in (25.4 mm) thick Hollow per 1 in (25.4 mm) thick Solid per 1 in (2594 mm) thick

Stone aggregate Slate aggregate Lightweight aggregate 0.4 Ib/ft2 (2.0 kg/m2) 0.3 Ib/ft2 (1.5 kg/m2) 0.4 Ib/ft2 (2.0 kg/m2) 0.6 Ib/ft2 (2.9 kg/m2) 5.3 Ib/ft2 (25.9 kg/m2) 5.8 Ib/ft2 (28.3 kg.m2) 6.7 Ib/ft2 (32.7 kglm2) 8.3 Ib/ft2 (40.5 kg/m2) 7.1 lb/ft2 (34.7 kg/m2) 11.2 Ib/ft2 (54.7 kg/m2) 10.0 lb/ft2 (48.8 kg/m2) B.S. 640 : 1964

Bitumen roofing felts (cont)

ImDrecnated flax felts and hair felts (cont)

- - - _ -

Cellular per I in (25.4 mm) thick 5.9 Ib/ft2 (28.8 kg/m2) Hollow per 1 in (25.4 mm) thick 5.3 Ib/ft2 (25.9

kg/m2)

Solid per 1 in (25.4 mm) thick 6.6 Ib/ft2 (32.2 kglm?' Based on 35 Ib/ft3 (560.6 kg/m3)

Aerated density

Per 1 in (25.4 mm) thick 3.0 Ib/ft2 (14.6 kg/m?

Per 1 in (25.4 mm) thick 4.0 Ib/ft2 (19.5 kglm9

peat, etc.

density

Based on 50 Ib/ft3 (800.9 kg/m3) Organic aggregates e.g. sawdust,

Based on 80 Ib/fts (1281.5 kglm3

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--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---B.S. 648 : 1964

Blockwork, walling (cont) Diatomaceous earth Concrete (cont) 2 in (50.8 mm) thick 6.8 Ib/ftz (33.2 kg/m2) 2% in (63.5 mm) thick 7.9 Ib/ft2 (38.6 kg/mz) 3 in (76.2 mm) thick 9.0 Ib/ft2 (43.9 kg/m2) 4 in (101.6 mm) thick 10.9 lb/ft2 (53.2 kg/m2) 4% in (114.3 mm) thick 11 - 6 lb/ft2 (56.6 kg/mz)

Board, laminated (ie. battenboard, blockboard and laminboard)

Per 1 in (25.4 mm) thick 2.3

rt

0.2 lb/ft2 (1 1.2 f 1.0 kg/rn?

Brass

Copper 60 per cent, zinc 40 per cent

Copper 70 per cent, zinc 30 per cent

(CZ 123 of B.S. 2870) 526 Ib/ft3 (8426 kg/m3)

(C2 106 of B.S. 2870) 532 lb/ft3 (8522 kg/m3j -

-_...

-

Brickwork

Clay

Solid, per 1 in (25.4 mm) thick

Low density 10.4 Ib/ft2 (504 kg/m2) Medium density 11 -2 lb/ft2 (54.7 k@mZ) High density 12.1 lb/ft2 (59.1 kg/in2)

Perforated, per 1 in (25.4 mm) thick .

25 per cent voids 7.9 lb/ft2 (38.6 kg/m2)

25 per cent voids 8.3 Ib/ft2 (40-5 kg/mz) Medium

density

{

15 per cent voids 9.6 _{lb/ft2 (46.9 kg/m2)} 25 per cent voids 9.2 _{lb/ft2 (44.9 kg/m2)}

15 per cent voids 8.8 Ib/ft2 (43.0 kg/m2)

15 per cent voids 10.0 Ib/ft2 (48.8 kg/m2) Concrete, per 1 in (25.4 mm) thick 12 Ib/ft2 . (58.6 kg/m2) Lightweight/Flue

Diatomaceous earth, per 1 in Calcium silicate (sand lime and

(25.4 mm) thick 3.4 Ib/ft2 (16.6 kg/m2)

flint lime)

Per 1 in (25.4 mm) thick 10-4 Ib/ft2 -(50-8 kg/rn2$->-\

11

NOTE. Forstructural calculation in SI units, attention is drawn to N-OTE 2 or the Foreword.

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**B S * b 4 8**

6 4

B.S. 648 : 1964

Bronrc, phosphor, wrought

(B.S.

369 and 407) Carpet Cast stone Cement Concrete Aerated Brick aggrcgate Natural aggregates Lightweight aggreptcs Normal Structural

Heavy weight aggregates

c.g. b a r p s . ilmcnite, Stccl shot magnetite, etc. No-fincs Organic aggrcgcltc Diatomacoous corth Copper Cast Wrought Shcct c\nd strip 0,048 in (18 SWG) 0.036 il1 (20 SWG) 0.028 in (22 SWG) 0.022 i n (24 SWG)

Othcr wrought forms

Cork

S58 Ib/ft:’ (8938 kg/nV)

Granular. 0.188 in (4-8 mm) sizt.,

loosely packed 7.5 Ib/ft3 (120 kg/m3)

h’ormul ycr 1 in (25.4 mm) thick 0.9 Ib/ft2 (4.4 kg/m2) Scmi-comprcsscd per 1 in (25.4 mm) thick 1.0 lb/ft2 (4.9 kg/m2) 12

m

Lb24667

-

O O L B 7 7 L

B

m

“P-” ” 558 Ib/ft3 (8938 kg/m3) 0.6

8:;

lb/ft2 (2.9

-

.o

kg/m2) 140 lb/ft3 . (2243 kg/m3) 90 lb/ft3 (1442 kg/m3)

+

0.5 40

f

!:

lb/ft3 (641

-

160 kg/m3) 125 & 10 lb/ft3 (2002 f 160 kg/m3) 144 lb/ft3 (2307 kg/m3)

+

961 70 f 30 lb/ft3 (1121 f 481 kg/m3) 110

1;

lb/f13 (1762

+

- 240 160 kg/m3) 200 i 10 Ib/ft3 (3204 & 160 kg/m3) 330 f 15 lb/ft3 (5286

f

240 kg/m3) 80 f 35 lb/ft3 (1281 561 kg/m3) kg/m3) 1

IO

f 5 Ib/ft3 (1762

f

80 kg/m3) 80 Ib/ft3 (1281

-

+

112 64 - 4 545 Ib/ft3 (8730 kg/m3) 2.2 Ib/ft2 (10.8 kg/m2) 1.7 Ib/ft2 (8.3 kg/m2) 1-3 Ib/ft2 (6.3 kg/mz) 1.0 Ih/ft2 (4.9 kg/m2)

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--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---BSI

B S w b 4 8 6 4

L b 2 4 b b 7

0038772

T

B.S. 648 : 1964

Cork (cont) Board (cont)

Compressed per 1 in (25.4 mm)

thick _{1.5 Ib/ft2 (7.3 kg/ma)} Flooring per 1 in (25.4 mm) thick 2.0 Ib/ft2 (9.8 kg/m2) Expanded metal, steel

For concrete reidforcement (B.S. 1221)

References (B.S. 1221) 327 0.9 Ib/ft2 33 1 0.6 Ib/ft2 332 0.5 Ib/ft2 348 1.3 Ib/ft2 351 0-9 Ib/ft2 352 0.6 Ib/ft2

For plastering (B.S. 1369 and B.S. 405)

Referemes

24 gauge (B.S. 1369) 0.3 IbJft2

X M

104

(B.S.

405) 0.5 Ib/ft2

X M

125 (B.S. 405) 0.6 Ib/ft2

For general purposes (B.S. 405)

References (B.S. 405)

X M

46 0.9 Ib/ft2

X M

51 0.3 Ib/ft2

X M

75 0.7 Ib/ft2

X M

79 0.2 Ib/ft2

X M

104 0.5 Ib/ft2

X M

125 0.6 lb/ft2

Insulating per 1 in (25.4 mm) thick 1.0 Ib/ft2

Felt (4.4 kg/m2) (2.9 kg/m2) (2-4 kg/m2) (6.3 kg/m2) (4.4 kS/m2) (2.9 kg/m2) (4.9 kg/ma) Fibre building board

Insulating boards 0.5 in (12.7 mm) 0.7 Ib/ft2 (3.4 kg/m2) Hardboard

Normal 0.125 in (3.2 mm) 0.7 lb/ft2 (3.4 kg/m2) Tempered 0.125 in (3.2mm) 0.7 Ib/ft2 (3.4 kgjm2) Laminated 0.188 in (4-8 mm) 0.7 lb/ft2 (3.4 kg/m2) Acoustic (unfaced) 0.5 in (1 2.7 mm) 0.7-1 *O Ib/ft2 (3.4-4-9 kg/m2)

0.75 in (19.1 mm) 0-9-1.4 Ib/ft2 (4.4-6-8 kg/m2) Flagstones Concrete 2 in (50.8 mm) thick 24 1 b/ft2 (1 I7 kg/ma) 2.5 in (63.5 mm) thick 30 lb/fI2 (146 kg/m*) f Y 13

NOTE. For structural c;llculation in SI units, attention is drawn to NOTE 2 of thc Foreword.

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--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---B.S. 648 : 1964 Ragstones (cont) Natural stone 2 in (50-8 mm) thick 28 lb/ft2 (137 kg/m2) 2.5 in (63.5 mm) thick 35 Ib/ft2 (171 kg/m2) Floors

Hollow clay blocks

Without ribs (including reinforcement and mortar jointing between blocks but excluding any concrete topping)

4 in (101.6 mm) 30 Ib/ft2 (146 kg/m2) 5 in (127.0 mm) 35 lb/ft2 (171 kg/m2) 6 in (1 52.4 mm) 39 Ib/ft2 (190 kg/m2) 7 in (177.8 mm) 47 Ib/ft2 (229 kg/m2) 8 in (203.2 mm) 53 lb/ft2 (259 kg/m2)

NOTE. These weights are based on the use of hollow blocks of varying size and depth. For each I inch (25.4 mm) of thickness of concrete topping add 12 Ib/ft* (58.6 kg/m').

With concrete ribs between blocks (including reinforcement but excluding any concrete topping)

3 in (76.2 mm) 19 Ib/ft2 (92.8 kg/m2) 3.5 in (88.9 mm) 22 Ib/ft2 (107 kg/m2) 4 in (101.6 mm) 25 Ib/ft2 (122 kg/m2) 4.5 in ( I 14.3 mm) 27 lb/ft2 (132 kg/m2) 5 in (127.0 mm) 29 lb/ft2 (142 kg/m2) 5 . 5 in ( 139.7 mm) 31 Ib/ft2 (151 kg/m2) 6 in (152.4 mm) 33 Ib/ft2 (161 kg/m2) 7 in ( I 77.8 mm) 37 Ib/ft2 (181 kg/m2) 8 in (203.2 mm) 41 lb/ft2 (200 kg/m2)

NOTE. Thcse weights are based on the use of blocks o f varying size and depth and of lesser density than those used without concrefe ribs between the blocks.

For each 1 in (25.4 mm) thickness of concrete topping add 12 Ib/ft* (58.6 kslm').

Hollow concrete units (including any concrete topping necessary for constructional purposes) 4 in (101 -6 mm) 35 Ib/ft2 (171 kg/m2) 5 in ( 127-0 mm) 40 Ib/ft2 (195 kg/m2) 6 i n ( I 51.4 mm) _{45 !b/ft2} (220 kg/m? 7 in (177.8 mm) 50 lb/ft2 (244 kg/m2) 8 in (203a2 mm) 5 5 Ib/ft2 (269 kg/m2)

(16)

--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---B.S. 648 : 1964

Glass

Sheet

24 oz (680.4

g)

0.1 1 in (2.8 mm)

32 oz (907.2 g) 0.156 in (4.0 mm) Cast, crear plate and armoured plate

thick - 1.5 lb/ft2 (7.3 kg/m2) thick . 2 lb/ft2 (9.8 kg/m2) 0.125 in (3.2 mm) thick 1.8 lb/ft2 (8.8 kg/m2) 0.25 in (6.4 mm) thick 3.3 lb/ft2 (16.1 kg/m2) 0-5 in (12.7 mm) thick 6.5 Ib/ft2 (31.7 kg/m2) 1.0 in (25-4 mm) thick 13.3 lb/ft2 (64.9 kg/m2) 0.25 in (6.4 mm) thick 3.5 Ib/ft2 (17.1 kg/m2) Wired cast Glass blocks Hollow (B.S. 1207) 3.875 in (98-4 mm) thick .

8 in (203.2 mm) (2061 blocks per yd2) 17 Ib/ft2 (83.0 kg/m2)

6 in (152.4 mm) (36 blocks per Vd2) 20 lb/ft2 (97.6 kg/m2)

Glass fibre

Thermal insulation of roofs and walls Acoustic insulation of floating floors

Per 1 in (25.4 mm) thick 0.1 Ib/ft2 (0.5 kg/m2)

-

Per 1 in (25.4

mm)

thick 0.2 lb/ft2 (1 *O kg/m2) Slab Per 1 in (25-4 mm) thick 0.4-1.0 lb/ft2 ( 2 . 0 4 9 kg/m2) Per 1 in (25.4 mm) thick 1.1 lb/ft2 (5.4 kg/m2) Per 1 in (25.4 mm) thick 1.3 lb/ft2 (6.3 kg/m2) Formboard Roof board Glazing, patent

(Bars at 2 ft (0.6 m) centres and wired cast glass 0.25 in (6-4 mm) thick)

Spans up to 6 ft (1.8 m) 5.3 lb/ft2 (25.9 kg/m2) Spans 6 ft to 11 ft (1 -8-3-4- m) 6.0 Ib/ft2 (29.3 kg/mz)

Spans

up

fo 11 ft (3-4

m)

4.0 lb/ft2 (19.5 kg/m2) Lead-covered steel bars

Aluminium bars

Gunmetal 553 lbIft3 (8858 kg/m3)

15

NOTE. For structural calculation in S1 units, attention i s drawn to NOTE 2 of the Foreword.

(17)

--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---B.S. 648 : 1964 Gutters Cast iron (B.S. 1205) Half-round 3 in (76.2 mm) 4 in (101.6 mm) 4.5 in (114-3 mm) 5 in (127.0 mm) 6 in (152.4 mm)

ogee

4 in (101.6 mm) 4.5 in (1 14.3 mm) 5 in (1 27.0 mm) Asbestos cement Half-round 3 in (76.2 mm) 4 in (101.6 mm) 4.5 in (1 14.3 mm) 5

in

(1 27.0 mm) 6 in (1 52.4 mm) 8 in (203.2

mm)

Ogee 4 in (101.6 mm) 4.5 in (1 14.3 mm) 5 in (127.0 mm) 6 in ( 1 52.4 mm) 8 i n (203.2 mm) Plastics PVC 4 in (101.6 mm) Aluminium Half-round, 6 ft (1.8

m)

lengths 4

in

(101.6 mm) Cast Wrought 0.08 in (14 SWG) Cast Wrought 0.08 in (14 SWG) Cast Wrought 0.08 in (14 SWG) Cast Wrought 0.08 in (14 SWG) 4.5

in

(1 14.3 mm) 5

in

(127.0 mm) 6 in (1 52.4) 1.8 lb/ft (2.7 kglm) of effective length 2.1 Ib/ft (3.1 kglm) 2.4 lb/ft (3.6 kg/m)

2.7

lb/ft (4.0 kg/m) 3.2 lb/ft (4.8 kg/m) 2.4 lb/ft (3.6 kglm) 2.8 lb/ft (4.2 kg/m) 3.1 lb/ft (4.6 kg/m) 1-4 Ib/ft (2.1 kg/m) of effective length 2.0 lb/ft (3.0 kg/m) 2.4 lb/ft (3.6 k d m )

2.6

lb/ft (3.9 kg/m) 2.9 Ib/ft (4.3 kglm) 3-9 Ib/ft (5.8 kg,'m) 2.5 Ib/ft (3.7 kglm) 3.0 Ib/h (4-5 kg/m) 3.0 lb/ft (4.5 kgle) 3.5 Ib/ft (5.2 kg/m) 5.1 lb/ft (7.6 kg/m) 0.4 Ib/ft (0.6 kg/m) 0.8 lb/ft (1.2 kg/m) 0.6 Ib/ft (0.9 kg/m) 0.9 Ih/ft (1.3 kg/m) 0.7 Ib/ft (1.0 kg/m) 1 *O Ib/ft (1 a 5 kg/m) 0-8 1 blft f 1 -2 kg/m) 1.1 lb/ft (1.6 kglm) 0.9 lb/ft (1.3

k

W

(18)

--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---B.S.

648 ; 1964 Gutters (cont) Aluminium (cont) Ogee, 6 ft (1.8 m) lengths 4 in (101.6 mm) Cast 0.9 lb/ft Wrought 0.08 in (14 SWG) . 0-8 lb/R Cast 1 1 lb/ft Cast 1-3 Ib/ft Wrought 0.08 in (14 SWG) 0.9 lb/ft 4.5 in (114.3 mm) 5 in (127.0 mm) Rectangular, 6 ft (1-8

m)

lengths 4 in x 2 in (101.6

mm

x 50.8 mm) 4 i n x 3in(101*6mm x 7 6 . 2 ~ ) 5 in x 2% in (127.0 mm x 63.5 mm) 5 in x 4 in (127.0 mm

x

10196 mm) 6 in x 3 in (152.4 mm x 76.2 mm) Wrought 0.8 Ib/ft Cast 1-5 lb/ft Wrought 1.0 lb/ft Cast 2.0 Ib/ft Wrought 1 -2 Ib/ft Precast concrete 22 in (558.8 mm) on bed and 7 in (177-8 mm) high _{62 f 2 lb/ft (92}

f

3 kg/m)

Gypsum panels and partitions 3 in thick (76.2

mm)

4 in thick (101.6 mm) 5 in thick (127.0 mm) 6 in thick.(152*4 mm) 2-25 in (57.2 mm) thick 2.5 in (63.5 mm) thick Building panels Dry partition Iron Cast Wrought Lathing Wood

9

Ib/ft2 (43.9 kg/ma) 10 lb/ft2 (48.8 kg/m2) 12 Ib/ft2 (58.6 kg/m2) 13 lb/ft2 (63.5 kglm9 4.2 Ib/ft2 (20.5 kg/ma) 5.3 Ib/ft2 (25.9 kg/m2) 450 lb/ft5 (7208 kg/m3) 480 lb/ft3 (7689 kglm9 1.3 lb/fts (6.3 kglm 17

NOTE. For structural calculation in SI units, attention is drawn to NOTE 2 of the Foreword.

(19)

--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---B.S. 648 : 1964

Lathing (cont)

Expanded metal, steel

For plastering (B.S. 1369 and

B.S.

405)

References 24 gauge (B.S. 1369) 0.3 lb/ft2 (1.5 kg/m2) XM 104 (B.S. 405) 0.6 lb/ft2 (2.9 kg/m2) X M 125 (B.S. 405) 0-6 Ib/ft2 (2.9 kg/m2) 0.015 in (28 BG) 0.8 lb/ft2 (3.9 kg/m2) 0.019 in (26 BG) 0.9 lb/ft2 (4-4 kg/m2) 0.024 in (24 BG) 1.1 Ib/ft2 (5.4 kg/m2) Clay 1 lb/ft2 (4.9 kg/m2)

Ribbed perforated metal sheet

Lead Shcet (B.S. 1178) 0.067 in (1 07 mm) 0.084 in (2.1 mm) 0.101 in (2.6 mm) 0.118 in (3.0 mm) Cast 4.0 lb/ft2 (19.5 kg/m2) 5.0 Ib/ft2 (24.4 kg/m2) 6.0 lb/ft2 (29.3 kg/m2) 7.0 lb/ft2 (34.2 kgjm2) 707 Ib/ft3 (1 1325 kg/m3) Linoleum (B.S. 810) 3.2 mm 4.5 mm 6.7 mm 0.9 Ib/ft2 (4.4 kg/m2) 1.2 lb/ft2. (5.9 kg/m2) 2.0 Ib/ft2 (9.8 kg/m2) Magnesium alloys Cast Wrought Sheet, flat 3 SWG 10 SWG 16 SWG 20 SWG Other wrought forms

108 lb/ft3 (1730

kg/m3)

2.4 Ib/ft2 (1 1.8 kg/m2) 1.2 lb/ft2 (5.9 kg/m2) 0-6 Ib/ft2 (2.9 kg/m2) 0.3 Ib/ft2 (1 5

kg/m2)

108 Ib/ft3 (1730 kg/m3) Magnesium oxychloride

Normal type (sawdust filler) Heavy duty type (mineral filler)

1 in (25.4 mm) thick 7.2 f 0.6 Ib/ft2 (35.2

k

2.9 kg/ma)

1 in (25.4 mm) thick 11 0.6 lb/ft2 (53.7

(20)

--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---BSI

**BS*bli8 b l i W**

L b 2 4 6 6 7 OOL8778

O

W

Mefal faced plywood Aluminium 0.188 in (4-8 mm) thick Faced 1 side Faced 2 sides Faced 1 side Faced 2 sides Faced 1 side Faced 2 sides Faced 1 side Faced 2 sides Faced 1 side Faced 2 sides 0.25 in (6.4 mm) thick 0.375 in (9.5 mm) fhick 0.5 in (12.7 mm) thick 0.75 in (19.1 mm) thick Galvanized steel Faced I side Faced 2 sides Faced 1 side Faced 2 sides Faced 1 side Faced 2 sides Faced 1 side Faced 2 sides Faced 1 side Faced 2 sides 0.188 in (4.8 mm) thick 0-25 in (6.4 mm) thick 0.375 in (9.5 mm) thick 0.5 in (1 2-7 mm) thick 0.75 in (19.1 mm) thick

Pavement lights, glazed

Cast iron or reinforced concrete

Pipes Cast iron Rainwater (B.S. 460) 2.5 in (63.5 mm) nominal size 3.0 in (76.2 mm) nominal size

B.S.

648 : 1964 0.8 Ib/ft2 (3.9 kg/m2) 1.1 Ib/ft2 (5.4 kg/m2) 1.0 lb/ft? (4.9 kg/m2) 1.3 Iblft2 (6.3 kg/m2) 1.3 Ib/ft2 (6.3 kg/m2) 1.5 Ib/ft2 (7.3 kg/m2\ 1.7 lb/ft3 (8.3 kg/m2) 2.0 lb/ft? (9.8 lcg/m2) 2-5 lb/ft2 (12.2 kS/m2) 2.8 Ib/ft2 (13.7 kg/m2) 1 -0 lb/ft2 1.6 lb/ft2 1.3 lb/ft2 1.8 Ib/ft2 1 * 5 I b/ft2 2.0 Ib/ft2 1 -9 1 bift2 2.5 Ib!ft2 2.8 Ib/ft2 3.3 Ib/ft2 (4.9 kg/m2) . (7.8 kg/m2) (6.3 kg/m2) (8.8 kg/m2) (7.3 k%fm2) (9.8 kg/m2) (9.3 kg/m2) ( I 2.2 kg/m2) (I 3.7 kg/m2) (16.1 kg/mz) 25 f 5 Ib/ft” (122.1 f 24.4 kg[ma) 3.3 Ib/ft (4.9 kg/m) 4.0 Ib/ft (6.0 kGfrn)

(21)

--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---Pipes (cont) Cast iron (cont)

Flue or smoke (B.S. 41) 4.0 in (101 -6 mm) nominal size 4.5 in ( I 14.3 mm) nominal size 5.0 in ( 1 27.0 mm) nominal size 6.0 in (152-4 mm) nominal size 7.0 in (177.8 mm) nominal size 8.0 in (203.2 mm) nominal size 9.0 in (228.6 mm) nominal size 10.0 in (254.0 mm) nominal size 12.0 in (304.8 mm) nominal size 6-0 Ib/ft 6.7 Ib/ft 8.3 Ib/ft 1 1 *3 Ib/ft 15.2 I b/ft 19.7 Ib/ft 25.3 Ib/ft 31.3 Ib/ft 42.7 Ib/ft Soil, wastc and ventilating

(B.S.

416)

Mcdium

3.0 in (76.2 mm) nominal size 4.0 in (101.6 mm) nominal size

6.0 i n ( 1 52.4 mm) nominal size

(min. ¡nt. dia.) 6.2 Ib/ft (9.2 kg/m)

(min. ¡nt. dia.) 8.0 Ib/ft (1 1.9 kdm) ( m i n . ¡nt. dia.) 12.2 Ib/ft (18.2 kg/m)

Heavy

3.0 i n (76.2 mm) nominal size 4.0 in ( 101.6 mm) nominal size

( m i n . ¡nt. dia.) 6.8 Ib/ft (10.1 kglm)

(min. int. dia.) 9.0 Ib!ft ( I 3.4 kg/m) . .

Extra hcnvy

4.0 i n (101 a6 mm) nominal size

6.0 in (152.4 (min. mm) nominal size

int. dia.) 10.7 Ib/ft (15.9 kg/m)

(min, ¡nt. dia.) 15.8 lb/ft (23.5 kglm) Drain (B.S. 437)

4 in (101 -6 mm) nominal size 6 in (152.4 mm) nominal size

(min. ¡nt. dia.) 17.5 Ib.'ft (26.0 kg/m)

(min. int. dia.) ' 25.0 Ib/ft (37.2 k d m )

Ashcstos ccnicnt Rainwatcr ((n.S. 569) 3 in (76-1 mm) nominal size 4 i n ( 101 mm) nominal si7e ( ¡ n t . diil.) 3 Ib/ft (4.5 kg!m) (¡nt. dií\.) 4 Ib/ft 0-6.(

(22)

8sI

8S*b48 6 4

m

1 6 2 q b b 9

0018780

7 m

B.S. 648 : 1964

Pipes (cont)

Asbestos cement (cont)

soil, wasfe and ventilating (B.S. 5823

4 in (101.6 mm) nominal size

(int. dia.) 4 Ib/ft (6.0 kg/m) Drainage and sewerage (B.S. 3656)

4 in (101 -6 mm) nominal size 6 in (152.4 mm) nominal size 9 in (228.6 mm) nominal size Class 3 6.1 f 0.3 lb/ft (9.1 3- 0.4 kglm) Class 3 9.9 f 0.5 Ib/ft (14.7

rt

0.7 kg/m) Class 2 14.8 f 0.7 Ib/ft (22.0 3: 1.0 kg/m) Class 3 17.1 f 0.9 Ib/ft (25.4 -!- 1.3 kg/m) Class 1 22.4 f 1.1 Ib/ft (33-3 5 1.6 kglrn) Class 2 25.8 -1.3 lb/ft (38.4 l 3: 1 a9 kg/m) Class 3 29.9 1.5 Ib/ft (44.5 L. 2?2 kglm) 12 in (304.8 mm) nominal size Pressure (B.S. 486) 4 tn (101 *6 mm) nominal size

Classes A and B 6.7 f 0.3 lb/ft (10.0 :i: 0-4 kg/m) Classes C and D 7.1 f 0.4 Ib/ft (lO”6 ri- 0.6 kg/rn)

Classes A and B 9.6 5 0.5 Ib/ft (14.3 :: 0.7 kg/m)

Class C 12.7 & 0.6 Ib/ft ( I 8.9 4. 0.9 kg/m) Class D 14.4 ri-. 0.7 Ib/ft (21.4 -:. 1.0 kdrn) -

Class A 15.2 0-8 ¡b/ft (22-6

-:.

I-:! kg/m)

Class B 18.1 f 0.9 Ib/ft (26.9 :;- 1.3 k d m ) Class C 23.2

+

1.2 Ib/ft (34.5 :!- 1 *8 kg/m) Class D 28.2 -J- 1.4 Ib/ft (42.0 I: 2. I kg/m)

Class A 22.4 & 1 . 1 Ib/ft (33.3 i: 1 a6 kg/m) Class B 26.5

rt

1 m Ib/ft (39.4 3 -!: 1 *9 kg!m) Class C . 39.3

+

2.0 Ib/ft ( 5 8 - 5

:-

3.0 kzlm) Class D 50.0 :i- 2.7 Ib[ft ( 7 4 4 L 4.0 kglrn)

6 in (1 52-4 mm) nominal size

12 in (304-8 mm) nominal size

Copper

Water supply

(average weights of tube, fittings

0.5 in (12-7 mm) nominal size 0.3 Ib/ft (0.4 kg/m) 0-75 in (19.1 mm) nominal size 0.5 Ib/ft (0.7 kg!m)

and clips)

>

21

NOTE. For structural wlculotion in SI units. attcntian i s drmin to NOTE 2 of thc F w x o r r l .

(23)

--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---B.S. 6 4 8 : 1964

Pipes (cont) Copper (cont)

Water

supply

(cont)

1 a25 in (3 1 * 8 mm) nominal size

1 e 5 in (38.1 mm) nominal size Rainwater, soil, waste and

ventilating (B.S. 659) 3 in (76.2 mm) nominal size 4 in (101 -6 mm) nominal size 6 in ( 1 52.4 mm) nominal size (int. dia.) (int. dia.) (int. dia,) Steel

Screwed and socketed (B.S. 1387) 1125 in (31.8 mm) nom. bore 1.5 in (38.1 mm) nom. bore 2 in (50.8

mm) nom.

bore 3 in (76.2 mm) nom. bore 4 in (101.6 mm) nom. bore Light Medium 1-25 in (31.8 mm) nom. bore 1.5 in (38.1 mm) nom. bore 2 in (50.8 mm) nom. bore 3 in (76.2 mm) nom. bore 4 in (191 -6 mm) nom. bore 6 in ( 1 52.4 mm) nom. bore Heavy 1.25 in (31.8 mm) nom, bore 1.5 in (38.1 mm) nom. bore 2 in (50.8 mm) nom. bore 3 in (76.2 mm) nom. bore 4

in

(101+6 mm)

nom.

bore 6.Q Ib/ft _{(1 -2 kg/m)} 1.1 lbjh (1.6 kg/m) 1 -3 Ib/ft (1 19 kglm) 2.1 Ib/ft (3.1 kg/m) 3.3 Ib/ft (4.9 kg/m) 5.4 Ib/ft (8.0 k d m j 1.8 Ib/ft (2.7 kg/m) 2.2 Ib/ft (3.3 kglm) 2.8 ib/ft (4.2 kg/m) 4.7 Ib/ft (7.0 kg/m) 6.8 lb/ft (10.1 kglm) 2.1 Ib/ft (3.1 kg/m) 2.5 Ib/ft (3.7 kglm) 3.5 Ib/ft (5.2 kg/m) 5.8 Ib/ft (8.6 kg/m) 8.3 Ib/ft ( I 2-4 kglm) 13.3 lb/ft (19-8 kglm) 2.6 Ib/ft (3.9 kglm) 3.0 Ib/ft (4.5 kglm) 4.2 Ib/ft (6.3 kdm) 6.9 Ib/ft (10.3 kg/m) 9.9 Ib/ft (14.7 k d m )

6 in (1 52.4 mm) nom. bore 14.7 Ib/ft (21.9 kgfm) Add 5 per cent extra if galvanized.

(24)

B S I

BS*bll8 b4

m

L b 2 4 b b 9 0 0 1 8 9 8 2 2

m

B.S. 648 : 1964 Pipes (cont) Plastics Polythene Light General purposes 0.5 in (12.7 mm) 1.0 in (25.4 mm) 2.0 in (50.8 mm) nom. int. dia. nom. int. dia. nom. int. dia. Medium

0.438 in (11.1 mm) nom. int. dia. 0.875 in (22.2 mm)

nom. int. dia, 2.25 in (57.2 mm) nom. int. dia. Heavy

0.5 in (12.7 mm) 1 *O in (25.4 mm)

2.0 in (50.8 mm) nom. int. dia. nom. int. dia. nom. int. dia. High density

Class B

0.5 in (12-7 mm) 1.0 in (25.4 mm) 2.0 in (50.8 mm) nom. int. dia. nom. int. dia. nom. int. dia. c l a s s c

0.5 in (12-7 mm)

1 *O in (25.4 mm)

2.0 in (50.8 mm) nom. int. dia. nom. int. dia. nom. ¡nt. dia, 0.04 lb/ft (0.06 kglm) 0.2 lb/ft (0.3 kg/m) 0.4 lb/ft (0.6 kglm) 0.06 lb/ft (0.09 kglm) 0.3 lb/ft (0.4 kg/m) 0-7 Ib/ft (1.0 kg/m) 0.1 lb/ft (0.1 kg/m) 0.4 lb/ft (0.6 kgjm) 0-9 lb/ft (1-3 kglm) 0.06 lb/ft (0.09 kglm) 0.1 lb/ft (0.1 kg/m) 0.4 lb/ft (0-6 kg/m) 0.08 Ib/ft (0.1 kglm) 0.2 lb/ft (0.3 kglm) 0.6 lb/ft (0.9 k,-$/g 23

NOTE. For slructural c:llcoIation it1 S I units, attention is drawn lo NOTE 2 of the Foreword.

(25)

--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---B.S. 648 : 1964 '

Pipes (cont) Plastics (cont)

Polythene (cont)

High dcnsity (cont) Class D

0.5 in (12.7 mm) nom. ¡nt. dia 1 *O in (25.4 mm)

nom. int. dia. 2.0 in (50-8 mm)

nom. int. dia.

Cold water Normal 0.5 in (12.7 mm) nom. bore 1.0 in (25.4

mm)

nom. bore 2-0 in (50.8 mm) nom. bore 0.5 in ( I 2.7 mm) nom. bore 1.0 in (25.4 mm) nom. bore Heavy Rainwater Soil 2.5 i n (63.5 mm) nom. slze 4 in (101.6 mm) nom. size

Cold water supply (B.S. 3505) 6 in (1 52.4

mm)

nom. size 2 in (50.8 mm) nom. size 3 i n (76.2 mm) nom. size 4 in (101.6

mm)

nom. size 6 in (152.4 mm) nom. size 1

in

(25.4

mm) nom.

size 2 in (50.8 mm)'nom, size 3 in (76.2 mm) nom. size 4 in (101.6 mm) nom. size 6 in (152.4 mm) nom. size 0.5

in

(12.7

mm)

nom. size

I

in (25-4

mm)

nom.

size

2

in

(50.8 mm)

nom.

size PVC Class AA Class B Class

c

Class D 0.2 Ib/ft (0.3 kglm) 0 4 Ib/ft (0-6 kglm1 0.07 Ib/ft (0.1 kg/rn) 0.2 Ib/ft (0.3 k d m ) 0.5 Ib/ft (0.7 kg/m) 0.1 lb/ft (0.1 k d m ) 0.3 Ib/ft (0.4 kglm) 0.4 Ib/ft (0.6 kg/m) 2.1 lb,% (3-1 kg/m) 0.4 lb/ft (0.6 kg/m) 0.8 lb/ft (1.2 k d m ) 1 e 2 Ib/ft (1 e 8 kg/m) 2.6 Ib/ft (3.9 kg/m) 0.2 lb/ft (0.3 kg/m) 0.5 Ib/ft (0.7 kdm) 1 -0 lblrt ( 1.5 kglm) 1.7 Ib/ft (2.5 kglm) 3.7 Ib/ft (5.5 kglm) 0.1 Ib/ft (0.1 kg/m) 0.2 lb/ft (0.3 kg/m) 0.6 Ib/ft (0*9 kdm)

(26)

--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---B.S. 648 : 1964

Pipes (cont)

Plastics (cont) PVC (cont)

Cold water supply (cont) Class D (cont)

3 in (76-2 mm) nom. size 1-3 Ib/ft (1.9 kglm1

4 in (101.6

mm)

nom. size 2.2 Ib/ft (3.3 kglm)

6 in (152.4 mm) nom. size 4.8 Ib/ft (7.1 kglm) Lead (B.S. 602)

Pressure

Service pipes above ground

0.5 in (12.7 mm) nom. int. dia. 0.75 in (19.1 mm)

nom. int. dia. 1 in (25.4 mm)

nom. ìnt. dia. 5.3

i:;

Ib/ft (7.9 - 4.0 kglm) nom. int. dia. 9.3

T

:.7 Ib/ft (13.8 - 7.0 kglm)

i 2.5

1 -25 in (3 1.8 mm)

+ O Cold water distributing pipes

above ground 0.5 in (12.7 mm) 0.75 in (19.1 mm)

1 in (25.4 mm) 1-25 in (31-8 mm)

nom. int. dia. 1.3 lb/ft nom, int, dia. 1 *7 lb/ft

nom. int. dia. 2.3-2.7 Ib/ft nom. int. dia. 3.0-4.0 Ib/ft

Hot water distributing pipes above ground

0-5 in (12.7 mm) 0.75 in (19.1 mm)

I in (25.4 mm)

1 -25 in (3 1.8 mm)

nom. ¡nt. dia. 1.3-1 a7 Ib/ft nom. int. dia. 1 *7-3*3 lb/ft nom. int. dia. 2.7-6'0 lb/ft nom. int. dia. 4.0-9-3 Ib/ft

( 1 -9 kglm) (2.5 kg/m) (3.4-4.0 kglm) (4.5-6-0 kg/m) (1.9-2.5 kg/m) (2.54.9 kg/m) (4.0-8.9 kg/m) 25

NOTE. For structural calculation in SI units, attention is drawn 10 N O l E 2 or tho ForeNord.

(27)

--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---B.S. 648 : 1964 Pipes (cont) Lead (cont) Pressure (cont) Gas pipes 0.375 in (9.5 mm) nom. int. dia. 0.5 in (1 2.7 mm)

nom. int. dia.

0.625 in (1 5.9 mm) nom. int. dia. 0.75 in (19.1 mm) nom. int. dia.

1 in (25.4 mm) nom. int. dia.

1.25 in (31.8 mm) nom. int. dia.

1.5 in (38.1 mm) nom. int. dia.

2 in (50.8 mm) nom, int. dia.

0.5 lb/ft 0.7-1.0 Ib/ft 1 4-1 e2 lb/ft 1-3-1 '7 Ib/ft 2.0-2.3 lb/ft 2.3-3.0 lb/R 34-4.0 lb/ft 4 - 0 4 -3 1 b/ft (0.7 kg/m) (1 -0-1 -5 kglm) (1 e5-1.8 kg/m) (1 -9-2-5 kg/m)

(3.0-3.4

kg/m) (3.4-4.5 kg/m) (4*5-6*0 kg/m) (6.0-7.9 kg/m) Non-pressure

Rainwater, soil, waste and

soil-and-waste ventilating pipes

1-25 in (31-8 mm) nom. int. dia. 2.0 lb/ft (3.0 kg/m)

1 4 in (38.1 mm) nom, ¡nt. dia. 2-3 Ib/ft (3.4 kg/m)

2 in (50.8 mm) nom. int. dia, 3.3 lb/ft (4.9 kg/m)

3 in (76.2

mm)

nom. ¡nt. dia. S a 0 lb/ft (7.4 kglm)

4

in

(101.6

mm)

nom, int. dia.

6.3

lb/ft (9-4 kg/m)

6 in (152.4

mm)

nom.

int.

dia,

11.3 IbFt (16.8 kg/m) Pitch fibre

(complete with couplings)

2 in (50.8

mm)

nom. size

3 in (76.2 mm) nom. size

4 in (101 -6 mm) nom. size

5

in

(127.0 mm) nom. size

6 in (152-4 mm) nom. size

(min. ¡nt. dia.) 1.2 Ib/ft (1.8 kdm)

(min, int. dia.) 2.0 lb/n (3.0 kg/m)

(min,

int. dia.) 2.6 lblft (3.9 kg/m)

(min. int. dia.) 4-3 Ib/ft (6.4 kg/m)

(min, int. dia.) 5.0 Ib/ft (7.4 kglm) ~ _"

(28)

--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---B.S.

648 1964

P i p (cont)

Clay, salt-glazed (B.S. 65 and 540)

3 in (76.2 mm) int. dia. 8 lb/ft (11.9 kgjm) 4 in (101 -6 mm) int. dia. 11 lb/ft (16.4 kglm) 6 in (152.4 mm) ínt. dia. 17 lb/ft (25.3 kg/m) 9

in

(228.6 mm) int. dia. 27 lb/ft (40.2’kglm) 12 in (304.8 mm) int. dia. 46 lb/ft (68-5 kg/m) Concrete Unreinforced or reinforced (B.S. 556)

Spigot and socket 4 in (101.6 mm)

nom. int. dia.

12 in (304.8 mm) nom, int. dia. 15 in (381.0 mm)

nom. int. dia. 18 in (457.2

mm)

nom. int. dia. 24

in

(609.6 mm)

nom. int. día. 30 in (762.0 mm)

nom. int. dia. 36 in (914.4

mm)

nom. ìnt. dia.

48

in (1219 mm)

nom. int. dia. 54 in (1372 mm)

nom. int. dia.

60 in (1524 mm) nom. int. dia. 72 in (1829 mm)

nom. int. dia.

21-22 Ib/ft (31.3-32.7 kglrn) 28-32 Ib/ft (41-747-6 kglm) 45-50 lb/ft (674-74.4 kglm) 70-78 lb/ft (104.2-116-1 kglm) 35-102 lb/ft (1414-151-8 kg/m) 125-133 lblft (186.0-197-9 k&m) 202-210 lb/ft (300.6-312.5 kg/m) 281-315 lb/ft (418.2-468.8 kg/m) 370-392 lb/ft (550.6-583-4 kglm) 630-644 lb/ft (937.5-958.4 kglm) 785-905 lb/ft f1168-1347 kglm) 925-975 Ib/ft (1377-1451 kglm) 1296 Ib/ft (1929 kg/m)

NOTE. For pipes with ogee joints, ¡.e. without a collar, deduct 10 per cent from the above

WCightS.

P !

27

NOTE. For structural calculation in SI units, attention is drawn to NOTE 2 of the Foreword.

(29)

--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---Pipes (cont)

Aluminium

Rainwater, with ears (B.S. 2997) 2 in (50.8 mm) nom. ¡nt. dia. Cast Wrought Heavy, 0.048 in (18 SWG) Light, 0.028 in (22 SWG) min. thickness min. thickness 2.5 in (63.5 mm) nom. int. dia.

Cast Wrought Heavy, 0.048 in (18 SWG) Light, 0.028 in (22 SWG) min. thickness min. thickness 3 in (76.2 mm) nom. int. dia.

Cast Wrought

Heavy, 0.048 in (18 SWG)

Light, 0,028 in (22 SWG) min. thickness

4

in (i01 -6 mm) nom. int. dia. min, thickness Cast Wrought Heavy, 0.048 in (18 SWG) min. thickness Brass 0.5 in (11.7 mm) outs. dia. 0.064 in (16 SWG) 0 4 3 6 in (20 SWG) 0.027, in (24 SWG) 0.064 in (16 SWG) 0.036 in (20 SWG) 0.029 in (24 SWG) 0.064 in ( I 6 SWG) 0.036 in (20 SWG) 0.022 in (24 SWG) 0.75 in (19.1 mm) outs. dia. I in (25.4 mm) outs. dia. 0.8 lb/ft 0.5 lb/ft 0.3 lb/ft 1 *O lb/ft 0.6 lb/ft 0.4 Ib/ft 1.6 lb/ft 0.7 lb/ft 0.5 lb/ft 1.7 Ib/ft 1 *O Ib/ft 0.3 lb/ft 0-2 lb/ft 0-1 Ib/ft 0.5 lb/ft 0.3 Ib/ft 0 - 2 Iblft 0.7 Ib/ft 0.4 Ib/ft 0.3 lb/ft (1.2 k d m )

(30)

--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---Pipes (cont) Brass (cont) 1.25 in (31.8 mm) outs. dia. 0.064 in (16 SWG) 0.036 in (20 SWG) 0.022 in (24 SWG) 0.064 in (16 SWG) 0.036 in (20 SWG) 09022 in (24 SWG) 2 in (50.8 mm) outs. día. 0,064 in (16 SWG) 0.036 in (20 SWG) 0.022 in (24 SWG) 3 in (76.2 mm) outs. dia. 0.064 in (16 SWG) 0-036 in (20 SWG) 0.022 in (24 SWG) 0.064 in (16 SWG) 0.036 in (20 SWG) 0.022 in (24 SWG) 1.5 in (38.1 mm) outs. dia. 4 in (101.6 mm) outs. dia. Pitchmastic Flooring 1 in (25.4 mm) thick 0.9 lb/ft 0.5 lb/ft 0.3 lb/ft 1 1 lb/ft 0.6 lb/ft 0-4 lb/ft 1.4 lb/ft 0.8 lb/ft 0.5 lb/ft 2.2 lb/ft 1.2 Ib/ft 0.8 lb/ft 2-9 lb/ft 1.7 lb/ft 1 *O lb/ft 11.1 f 1.1 lb/ft B.S. 648 : 1964 Plaster Gypsum

Two coat, 0.5 in (12.7 mm) thick Normal sanded undercoat and One coat, 0.2 in (5.1 mm) thick, Lime (non-hydraulic and hydraulic) Barium sulphate 0.5 in (12.7 mm) thick Lightweight

neat finishing neat

gypsum

0.5 in (12.7

mm)

thick

Perlite aggregate, 2 coat, 0-5 in

Vermiculite aggregate, 2 coat, 0.5 in

(12.7 mm) thick (12.7 mm) thick 29 4.5 Ib/ft2 (22.0 kg/m2) 1.4 Ib/ft2 (6.8 kg/m2) 5.0 Ib/ft2 (24.4 kg/m2) 8.0 Ib/ft2 _(39.1_kg/m2) 2*0 Ib/ft2 (9.8 kg/m2) 2.2 Ib/W . (10.7 kg/$) I \

(31)

--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---BSI

BS*b4d

6 4

W

B.S. 648 : 1964 Plasterboard, gypsum Solid core 0.375 in (9.5 mm) 0.5 in (12.7 mm) 0175

in

(19.1 mm) 0.375 in (9.5 mm) 0.5 in (12.7 mm) Perforated lath Plastics Flooring Flexible PVC 0.062 in (1.6 mm) 0.080 in (2.0 mm) 0.100 in (2.5 mm) 0,125 in (3.2 mm) 0.062 in ( I -6 mm) 0.080 in (2.0 mm) 0.100 in (2.5 mm) 0-125 in (3.2 mm) 0.188 in (4.8 mm) PVC (Vinyl) asbestos tiles

Flat sheet Acrylic 0.125 in (3.2 mm) 0.25 in (6.4 mm) 0.063 in (1 *6 mm) 0.125 in (3.2 mm)

Synthetic resin bonded

paper

Melamine faced 0.063 in

(1.6 mm) thick Allowance for laps) Cellulose acetate Corrugated (including Adit 1.7 lb/ft2 (8.3 kg/m2) 2.3 lb/ft2 (11.2 kg/m2) 3.5 lb/ft2 (17.1 kg/m2) 1.6 lb/ft2 (7.8 kg/m2) 2.2 lb/ft2 (10.7 kg/m2) 0.5 _{lb/ft2 (2.4 kg/m2)} 0.7 Ib/ft2 (3.4 kg/m2) 0.8 lb/ft2 (3.9 kg/m2) 1.0 lb/ft2 (4.9 kg/m2) 0.7 Ib/ft2 (3-4 kg/m2) 0.9 lb/ft2 (4-4 kg/m2) 1.2 Ib/ft2 (5.9 kg/m2) 1.4 lb/ft2 (6.8 kg/m2) 2.1 lb/ft2 (10.3 kg/ma) 0.8 lb/ft2 (3.9 kg/m2) 1.5 lb/ft2 (7.3 kg/m2) 0-4 lb/ft2 (2.0 kg/m2) 0.9 Ib/ft2 (4.4 kg/m2) 04-0.5 Ib/fta (2.0-2.4 kg/m2) 0.9 lb/fta (4.4 k d m 9

Glais-fibre reinforced polyester 0.8 Ib/ft2 (3.9 kam2) PVC 0.8 Ib/ft2 (3.9 kg/m2)

Expanded and foamed Expanded PVC per 1 in Expanded polystyrene per

(25-4

mm)

thick 0.3 & 0.2 Ib/ft2 (1.5 f 1.0 kg/m2) 1 in (25.4 mm) thick 0.1 lb/ft2 (0.5 kg/m2)

(32)

BSI

B S * b 4 8

b 4

m

l b 2 4 b b 7 0018790

L

B.S. 648 : 1964

Plastics ( c o d

Expanded and foamed (cont) Foamed polystyrene per Foamed polyurethane per Foamed phenolic resin per

1 in (25.4 mm) thick 0.1 0.02 Ib/ft2 (0.5 f 0.1 kg/m2) 1 in (25.4 mm) thick 0-5.f 0.3 Ib/ft2 (2.4 f 1.5 kg/m2) 1 in (25.4 mm) thick 0.3 f 0.1 lb/ft2 (1-5 f 0.5 kg/m2) Domelights Acrylic 0.188 in (4.8 mm) 1.1 Ib/ft2 (5.4 kg/m2) 0.25 in (6.4 mm) 1.5 lb/ftz (7.3 kg/m2) Damp-proof course Polythene 0.02 in (0.5 mm)

nom.

thickness 0.1 Ib/ft2 (0.5 kg/m2) Plywood

Per mm thick 0.125 f 0.025 Ib/ft2 (0.6

rt

0.1 kg/m2)

Quilt

Eelgrass per 1 in (25.4 mm) Glass fibre per

L

in (25.4 mm)

Hair per 1 in (25.4 mm) thick 1 f- 0.1 lb/ft2 (4.9

rt

0-5 kg/mz) Kapok per 1 in (25.4 mm) thick 0.1 Ib/ft2 (0.5 ks(m2) . .

Mineral wool per 1 in

(25.4 mm) thick 0.7 f 0.3 Ib/ft2 (3-4 :E 1-5 kdrn?) thick 0.3-0.4 lb/ft2 (1.5-2.0 kg/m2) thick 0.2 Ib/ft2 (1-0 kg/m2)

Reinforced concrete 150 Ib/ft3 (2403 kt$$)

Rendering

Portland cement : sand (1 : 3)

0.5 in (12.7 mm) thick 6.0 Ib/ft2 (29.3 kg/m2) Rubber Flooring Sheet or tiles 0.125 in <3*2 mm) 1.1 Ib/ft? (5.4 kg/m2) ' 0.188 in (4.8 mm) 1.7 Ib/ft2 (8.3 kg/m2) 0.25 in (6.4 mm) 2.2 Ib/fts (10.7

kg/m2)

0.375 in (9.5 mm) 3.3 lb/ft3 _{( í G I}kg/nI2) 0.25 in (6.4 mm) thick 2.6 :C 0.3 lb/ft2 (12.7 f 1.5 kg/m2) Latex-hydraulic cement 31

(33)

--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---Rubber (cont) Cellular

Expanded

Light density (max. static load 1.5 Ibf/in3 (0.10 kgf/cma))

per 1 in (25.4 mm) thick 1.1 lb/ft2 (5.4 kg/m2) load 2 lbf/in2 (0.14 kgf/cm2)

per 1 in (25.4 mm) thick 1.6 lb/ft2 (7.8 kg/m2)

7.5 Ibf/in2 (0.53 kgf/cm2))

per 1 in (25.4 mm) thick 2.5 Ib/ft2 (12-2 kg/m2) Standard density (max. static

Heavy density (max. static load

Expandcd ebonite per I in

(25.4 mm) thick 0.4 lb/ft2 (2.0 kg/./m2)

Sand loo f 5 Ib/ft3 ( I 602 f 80 kg/m3)

Screeding

Portlend cenient : sand (1 : 3) 0.5 in ( I 2.7 mm) thick

Shingles

Cednr wood Slate

Slob (Westmorland, etc.) 1 in (35.4 mm) thick Slating (including 3 i n (76.2 mm) lnps and nails) Thin Thick Th i II Thick Cornish Th in Thick Wclsh Wcstmorlancl Soils

Non-cohcsivc (or granular) ¡.c. sands and gravels

6 lb/ft2 (29.3 kglm9 1.5 lb/ft2 (7.3 kg/m2) 15 Ib/ftz (73.2 kg/m2) 5 Ib/ft2 (24.4 kg/m2) IO lb/ft2 (48.8 kg/m2) IO Ib/ft2 (48.8 kg/m2) 16 Ib/ft2 (78.1 kg/m') 6 Ib/ft2 (29.3 kg/m2) IO Ib/ft2 (48.8 kg/m2) - l.oose 115 i

lo

lb/ft3 ( 1842 -i. 160 kglm9 Dcnse 130 r.! 10 Ib/ft3 (2082 .1- 160 k g l d 32

(34)

B.S. 648 : 1964

Soils (cont)

Cohesive, i.e. silts and clays

Soft 100 f 15 Ib/ft3 (1602 & 240 kg/m3)

stiff 125 f 10 lb/ft3. (2002 f 160 kg/m3) Firm 110 f 10 Ib/ft3 (1762 f 160 kg/m3) Steel Mild Solid Sheet

Corrugated (including 20 per cent for laps ‘as laid’) 0.05 in (18 BG)

Flat 0.05 in (18 BG)

Corrugated (including 20 per Protected

cent for laps ‘as laid’)

0.039 in (20 BG)

Flat 0.039 in (20 BG)

Cast Fabric

(B.S. 1221, Table 1, Table 2 or Table 4)

Oblong Mesh References (B.S. 1221) 101, 201 and 401 103, 203 and 403 106, 206 and 406 108, 208 and 408 109,209 and 409 113 Square mesh References (B.S. 1221) 121, 221 and 421 123,223 and 423 124, 224 and 424 125. 225 and 425 490 lb/ft3 (7849 k%n13) 2.8 Ib]ft2 (13.7 kg/m2) 2.0 Ib/ft2 (9.8 k g i d ) 3.2 lb/ft2 (15.6 kg/m2) 2.2 Ib/ft2 (10.7 kg/m2) 490 lb/ft3 (7849 kg/m3) 1.8 Ib/ft2 (8.8 kg/m2) 1 *4 Ib/ft2 _(6.8_kg/m2) 0.9 Ib/ft2 (4.4 kg/m2) 0.6 lb/ft2 (2.9 kg/ln2) 0.5 lb/ft2 (2-4 kgIn$) 0.2 Ib/ft2 (9.8 kg/m2)

(35)

--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---BS,

648 : 1964

Stonework, natural (cont)

Limcstone (cont)

Medium, c.g. Portland stone

3 in (76.2 mm) thick 4 in (101.6

mm)

thick

0.75 i n (19.1 mm) thick

1.5 i n (38.1 mm) thick Heavy, e.6. marble

Sandstone

Light, c.6. Woolton

4 in (101.6 mm) thick

6 i n (152.4 mm) thick Medium, c.g. Darley Dale

4 in (101.6 mm) thick

Hcavy, e.6. Mansfield Red

6 in (152.4 mm) thick Granite

Light, e.g. Peterhead 2 in (50.8 mm) thick 3 i n (76.2 mm) thick 2 in (50.8 mm) thick 3 in (76.2 mm) thick 2

in

(50.8 n m ) thick 3 in (76.2 mm)

Now. For cramps add 5 Ib/ft3 Medium, e+ Cornish Hcavy, c g . Gucrnscy 140 lb/ft3 (2243 kg/m3) 35 Ib/ft2 (170.9 kg/m2) 47 Ib/ft2 (229.5 kg/m2) 170 Ib/ft3 (2723 kg/m3) 10.5 lb/ft2 (51.3 kg/m2) 21 lb/ft2 (102-5 kg/m2) 137 lb/ft3 _{(21 95}_kg/m3) 46 lb/ft2 (224.6 kg/m2) 69 Ib/ft2 (336.9 kg/m2) 145 lb/ft3 (2323 kg/m3) 48 lb/ft2 (234.4 kg/m2) 73 Ib/ft2 (356.4 kg/m2) 150 lb/ft3 (2403 kg/m3) 50 Ib/ft2 (244.1 kg/m2) 75 lb/ft2 (366.2 kg/m2) 162 Ib/ft3 (2595 kg/m3) 27 Ib/ft2 ( 1 3 1 4 kg/m2) 40 Ib/ft2 (195.3 kg/m2) 165 Ib/ft3 (2643 kg/m3) 28 Ib/ft2 (136.7 kg/m2) 41 lb/ft2 (200.2 kg/m2) 183 lb/ft3 (2931 kg/m3) 30 Ib/ft2 (146.5 kg/m2) 46 Ib/ft2 (224.6 kg/m2) (80.1 kg/m3) Straw slab, compressed

Per 1 in (25.4 mm) thick 2.0

i

-

0.2 Ib/ft2 (9.8 f 1.0 kp/m2)

Roads and footpaths 1 in (25.4 mm) Tarmacadam

thick 12 lb/ft2 (58.6 kg/m2) Terra cotta, solid 132 lh/ft3 (21 14 kglm9 Terrazzo

Paving 0.625 i n ( 1 5.9 mm) 6.7 f 0.7 Ib/ft2 (32.7 5 3-4 kg/ni2) Tilcs

1 in (25.4 mm) 10 i 1.0 lb/ft2 (48.8 4.9 kg/m2) Partitions

1.5 i n (38-1 mm) 16.7 f 1.7 Ib/ft2 (81tF

+

8.3

ke/m2)

(36)

--`,`,,``,`,``,```,,,``,,,,``,,-`-`,,`,,`,`,,`---(101.6 mm) gauge 13.0 Ib/ft2 (101.6 mm) gauge 14.5 lb/ft2 Hand made, 4 in

Single lap (interlocking) 8 f 1 Ib/ft2 Slate aggregate 12 in Concrete (304.8 mm) gauge 9.0 lb/ft2 35

B S I

BS*b48 b4 Lb24bb9

0 0 3 8 7 7 4

7

Thatching

Reed (including battens) 1 ft

(304.8 mm) thick .

Thermal capacity roof coverings

Shingle and felspar Per 1 in (25.4 mm) thick Tiling, floor Asphalt 0.125 in (3.2 mm) thick Clay 0.5 in (12.7 mm) thick 0.875 in (22.2 mm) thick 0'25 in (6.4 mm) thick 0-125 in (3.2 mm) thick 0.062 in (1 -6 mm) thick 0.080 in (2.0 mm) thick 0.1 in (2.5 mm) thick 0.125 in (3.2 mm) thick 0.062 in (1 -6 mm) thick 0-080 in (2-0 mm) thick 0.1 in (2.5 mm) thick 0.125 in (3.2 mm) thick 0.188 in (4.8 mm) thick Cork compressed

Hardboard faced, bitumen based PVC flexible PVC (vinyl) asbestos Concrete 0.625 in (15.9 mm) thick Tiling, roof Clay Plain Machine made, 4 in 8.5 Ib/ft2 7.5 lb/ft2 1.3 lb/ft2 5.6 Ib/ft2 9.2 Ib/ft2 0.5 Ib/ft2 0.8 lb/ft2 0.5 Ib/ft2 0.7 lb/ft2 0.8 Ib/ft2 1 *O Ib/ft2 0.7 lb/ft2 0.9 lb/ft2 1 *2 lb/ft2 1 -4 lb/ft2 2.1 lb/ft2 7.8 Ib/ft2 B.S. 648 : 1964 (36.6 kg/m2) (6.3 kg/m2) (27.3 kghn2) (44.9 kg[m2)

.

(2.4 kg/m2) (3.9 kg/m2) (3-4 kg/m2) (4.4 kg/m2) (5.9 kg/m2) (6.8 kdm?) (10-3 kg/niL) (38.1 kg/m2) (70.8 kg/m2) (39.1 .f 4.9 kg/m2)

NOTE. Forstructural calculation-in SI unils,oltcnlion is drawn lo NOTE2 of the Farcword.