Formwork_and_falsework_manual

FORMWORK FALSEWORK MANUAL

Ministry of Transportation Ontario

ea

repa repare re by ffic ffice, e, Stru Struct ctur ural al Of ic Appr Approv oval al Sect Sectio io Apri Apri

99

FORMWORK FALSEWORK MANUAL

repa repare re by Head Head Of ice, ice, ruct ruct ra ffic ffic Appr Approv oval al Sect Sectio io Ministry of Transportation Ontario

ISBN ISBN 0-7778 0-7778-62 -626060Repr Reprod oduc uced ed with with perm permis issi sion on pr

99

al user user

this this ubli ublica cati tion on

Publ Public icat atio ions ns On Onta tari ri By tele teleph phon one: e: 1-800-668-9938 (613 (613 566566-22 2234 34 TTY: 1-800-268-7095 Online: www.publications.gov.on.ca

Mini Minist stry ry of Tran Transp spor orta tati tion on at (905 (905

ISB

0-7778 0-7778-62 -626060-

04-2 04-2 65

Preface

to

tr

iv

ig

it

io

ri

ly

tr

ture ture

it

ific ific

rc

ta

ly

in ivid ivid

Page CHAPTER

INTRODUCTION

CHAPTER CHAPTER CHAPTER

FA FA

CHAPTER CHAPTER REFERENCES

INSPECTION

1-2

CONTENTS

TE

NTRODU TI

.... ............. ................. ............... ......... ...

.. .... ........ .... .... .. .... .. ........ ........ .. .. .. .. ..

13

22

FA

....... ........ ...... ...... ... ........ .................. ....

n F n W

. .

. . . .

. . . . . . . . . . 28

.. .... .. .. ...... .. .... .... .. .. .... .... .. ...... .. .. ..

g S

m B

-I

g R

.. .. .. .. .. .. .. ..

..

..

.. .. .. .. .. ..

.. .. .. ..

..

45

........ ............. ..... .... ............. ....... .. ....... ............... .......... ............... ...... ....... ............... ......... ........... ......... .... ... ... ........ .......... ... ..... ... .......... ....

REFERENCES

63

1.

INTRODUCTION

pedestrian traffi

construction

underneath bridge during thei construction

alteration or repair

construction. ensure

il

ri

ntar o.

al

onstructio

tage includ ng erection

nd di ma tlin

Solid

CONCRETE

PRE-CAST PRESTRESSED CONCRETE

Circular Void

~\._jL_)7

Re ctangular Void

ITTI ~ICJICJICJICJ~

Bo

Beam

I-Beams

PRE-FABRICATED STEEL Bo

Beam

fonnwork.

Temporary Spreader

Board Sheathin

Ties

Double Walers

il

late

millimetre.

Sizes

(in) 2x2

1-9/16

1-91

1-1/2

1-1/2

64 3-1/2

89 140

10

7-1/2

7-114

184

9-112

9-1/4

235

2-1/2

2-1/2

64x64 89

5-112

5-5/8

140 184

10

235 11-114

3-9/16

3-11

286

3-1/2

5-5/8

184 10

9-1/2

12

11-112

11-114

286

lS

nS

cS

5-1/2

16

7-1/2

191

15-1/2

394 445

8x8

7-1/2

12

7-1/2

11-1/2

292

14

13-112

343

16

15-1/2

394

20

19-1/2

495

12

11-1/2

292

14 16

15-1/2

394

20

19-1/2

495

11-112

14

13-1/2

343

16

20

19-1/2

495

.1

drawings.

CAN/CSAVisually Stress-Grade

Lumber respectively

stripping.

][

.4

2t

10.9.4.10fCAN/CSA-086.1-M94

10

[3]).

.1

splaceme

co tr le

ef rmat on

to matc

th desi

ev

failur

as mption

an othe friction connection

11

W.II Thic\:noe~:::

Coil:Rod

oi Ti

WingNut

/~*~~~

Tompl.to Bolt

Ta er Clintiloe;voe:r

FormP.nd Pou Hoiglr

Lumber

and Wodgo

Sdb>C1c~

Typica

antile er

Form

ppli atio

riot

Sh Bolt

•• her

She-Bolts

12

3.3

Type of Falsewor

Fo

13

oile to facilitate removal.

mi th

formatio

ea in

14

PROPRIETRAV HANGER

P RO PR IE TR A O VE RH AN G

S TE E B RA CK E

W IT H H AN GE R

S UP PO R

15

se

connec ed ogethe

it diag na

ro

raci g.

they support.

to th following:

dismantling nd ea

storag

ma ntenance

16

Joists

Stringer

.3

17

also im ortant ha

It

ed er

jo ts ar centrall

Butt join of th

it on

stringer holes

",.J.". 10 mm thic steel/aluminu on ne id it 4-12.7 (Grade A325J

plat .J

~---:'--l/-----

I'

·----t

-1 11)1

It

II

,I

_J

- _

~;;

-; -oi

~ ; :_ ; ; - -

,I

L--J

U-Headwith har flange of th

18

stringer

pp rt

grou

wi ho

excessiv

settle ents

roperl

di tr ut

he

oads foun at ns

kN kN/m

:1 sl pe (Figur

3.

19

exca atio

nd ba kf ling

perati ns fo

es

ub tr ctur s.

I<

It

'1 Projectio

Min. Sill

I<

Projectioii

Centr Lin

'I Projectio

Jackscre

g nm on t

r-..

r-~r_------~-7 If splice occurs within min. sill projection,

us

Ie

d ou bl e

21

onIV

an Sill

NF

DF

etc.). (*)

4.2

Vertical Loads

hese nc de th fo ow ng

ca culating he ea loads.

KN/m

Aluminum Allo Plai Concrete

27.0 23.5

Water

9.8

Tabl 4.

Material Unit Weight 22

kN/m

rizontal

ro ec ed ar

of he formwork kN/m

kN/m

he

nc ud

of th horizontal

th fo lowing

0pr

0pr kN pe linear

23

fl ence

he fo lo in

ac or

CI 347R-94

es (See su sect

kN/m

it

containi

4. .2).

C AN /C SA -

24

M9

live loads

CAN/CSA-

pressure.

25

e l

(RlT)

RI(T+ 17.8)

lF

(RlT)

RI(T+17.8)

(ii)p=150x

Where:

metric. metric. 26

rF gF

kS

eF

27

references or

outlined in CSA, S269.1-197

[1] an CAN/CS -S

stresses.

28

9. -M

[6].

et ad

of

stal atio

af

or re ommended

26 .1 Cl

ad-e rr

pp icatio

ca ci es

af ty fact rs

se

establ hi

af

rkin

tc

.4

Standard CAN3-086-M84

CAN/CSA-086.1-M94

[3].

29

CANICSA-086.1-M94,

5.2.1

rk

tr

ig

CAN3-086-M84, clause ar

fo lo

(a Be di

omen

(b Shea Resistance c) Co pressi

apac

Clause 4.5.1.2

Clause 4.5.2.2

Resi tanc

perpen icular to grain: Clause 4.5.4 Clause 4.5.3.3.5

5.2.2

imit

tate

ig

CAN/CSA-086.1M94,

Clause 4.2.4.2.

30

Clause 5.5. Clause 5.5. Clause 5.5.

Bu ding

[1

Clause 16.2.4

(b Al owable Sh ar tres es (c Be ri (d

eb

Stiffene s: ri

ling

Clause 16.2.3

laus ause

.5

9. au

(f Axia Compression:

19.9

Clause 16.2.2

31

Standard

.I

im

ta

te

tu

Th relevant

clause ar as fo ow (a

en ng Resistance

at rall

up or ed memb rs

Laterall

(b Shea Resistance (c Bearin

Clause

Stiffeners

(d We Crippling:

la se

Clause

members:

Clause

.5 .6

.4

.6

.9

(e Axia Compression: Clause

anal ze

unsupporte

la se

eneral form la

.3

ap lica le

tatica ly dete mi at

32

framed struct re

span

g L

.0

shal be considered

he le un er ll

5.4.3.

adin

co di io s.

below. 33

Transverse Directio

5.4.3.1

pr

er

(F ur

ppleme ta

3. ).

ra in

directions (Figur

aragra

(F gure

(e.g

ub

Clamp).

5.5)

.7

34

Condition: Bracing:

5m•W

frame tower. transverse

ot re uire

H>Sm [2

Condition: racing

fr oriz ntal tu in

to

r. tr

placed at

Clamp

35

ra

vers id height

rame

io

to

rn

rs

Clamp

it

transverse.

Clamp

36

Frames

itio

frames al

ad

transverse

ntin us Clamp

igur

5.

Frame

H::> 20 ::>3 Frames

itio

frames ll

de ir

transverse

onti ous. im

lo

•••••••••••Cuywire Clamp

37

it

in

>4%

fr me (F ur

transvers

5.

).

direction 38

H>Sm (2 Frames)

6m

Sect on A-

Conditio Bracing:

rn fr orizonta tu

to er lo gitudi al placed at id ei ht in

Tube Cl.am;p ••••_ •• Tube Cl.am;p

39

ad

ontinuous.

Frames

Spacing

Sectio ondition

fram

-A

to er

longitudinal

TWle Clamp _._._. TWle Clamp

ig

Frame

A- A"

ll ma

contin ous. Clamps

ig re

.1

41

struct re

ho ld

he ke

.0 [13].

42

5.6.1

Mudsills

where: vertical load

43

.6

44

efficiency of ro er Design

esigne

falsew rk an form

ra ings ar fo lowe

trad is achieved

used fo in-progres

inspection

45

rk

tr ct res. Competen

n-pr gres