Part2_CEAT_Post Installed Anchor - Design Part

8/13/2019 Part2_CEAT_Post Installed Anchor - Design Part

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Now you know many things aboutanchors

ets start the design withACI 318 appendix D


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1. Action load and moment transfer to anchor by tensile andshear

Conceptual of Post-Installed Anchor Design

Tensile and shear action

Tensile

Shear


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2. Load in anchor transfer to concrete



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2. Load in anchor transfer to concrete


3. Design Resistance Design Load

Design Resistance Design Load start your designagain!

Caution! : If resistance load were lower than action load in any case


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4 steps before starting your calculation

Installation position and layout of anchor

Base material

Identify design criteria

1

Type ? Properties ?

Compressive Strength ?

Zone of concrete compression = Un-CrackedConcrete

Zone of concrete tension = CrackedConcrete


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Base material

Identify design criteria

1

Cracked Concrete : tension zone in concrete


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2

Action load & moment with direction

Load condition & required Resistance

Identify Action Load criteria

Static Load

Dynamic Load


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Identify installation condition

3

Installed direction

Temperature of base material

Must to suit for Thailand

Hole surface condition

Hammer drill hole Diamond core

Moister condition

Dry

Water - Saturated

Water - filled hole

Underwater application

Vertical Horizontal Overhead


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Other requirement

4 Corrosive resistance

Insulator

Low Corrosive Resistance High

Factory mutual


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Tension resistance: Steel 1 mode + Concrete 3 Modes

Shear resistance: Steel 1 mode + Concrete 2 Modes Bond resistance (Tension): Bonding 1 mode

Define load

resistance from

all failure modes

Tension: 5 Modes

Shear: 3 Modes

Select minimum

resistance

Steel: Ductile or Brittle steel

Concrete: Supplementary reinforcement or plain concrete

Product ReliabilityHigh, Medium or Low

Seismic load condition: 0.75 x reduction factor x Fy.

Multiply

reduction factor

xDB..x...mm. with product A or design resistance load

equivalent (ACI)

Specify anchor

details in the

drawings

Vua/ Vn < 0.2 Full strength in Tension shall be permitted

Nua / Nn < 0 .2 Full strength in Shear shall be permitted

Nua + Vua < 1 .2 or recalculate

Nn Vn

Interaction load

considering

1

2

3

4

5

ACI 318-11 Appendix D : step by step


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Define load

resistance from

all failure modes1



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4. Concrete side-face blowout (D.5.4)

2. Concrete breakout (D.5.2)

1. Steel failure (D.5.1)

3. Concrete pullout (D.5.3)

5. Bond strength of adhesive anchor (D.5.5)

Tension resistance : 5 Major formulas Shear resistance : 3 Major formulas



3. Concrete pry-out (D.6.3)


Define load resistance from all failure modes1


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Multiply

reduction factor2




Define load

resistance from

all failure modes1


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Multiply reduction factor : Strength2


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Anchor in structures assigned to Seismic Design Category C, D, E or Fshall satisfy the additionalrequirements in accordance with ACI 318 appendix D Section D.3.3


Multiply reduction factor : Seismic2


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Define load

resistance from

all failure modes

Tension: 5 Modes

Shear: 3 Modes

Select minimum

resistance





Multiply

reduction factor




Nn Vn

Interaction load

considering

1

2

3

4



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Nn= min { Nsa ; Ncb ; Npn; Nsb ; Nag }

The governing tensile strength is

taken to be the minimum value

among Nsa, Ncb, Npn, Nsb and Nag

Vn= min { Vsa ; Vcbg ; Vcpg }

The governing shear strength is taken

to be the minimum value among

Vsa , Vcbg and Vcpg


Select minimum resistance capacity + Interaction load considering3+4

ACI 318-11 appendix D Section D.5 ACI 318-11 appendix D Section D.6


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Nua is the factored applied tensile load that must beresisted by the anchor.

Vua is the factored applied shear load that must be resisted

by the anchor.


Interaction load considering of tensile and shear4


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Define load

resistance from

all failure modes

Tension: 5 Modes

Shear: 3 Modes

Select minimum

resistance





Multiply

reduction factor

xDB..x...mm. with product A or design resistance load

equivalent (ACI)

Specify anchor

details in the

drawings




Nn Vn

Interaction load

considering

1

2

3

4

5



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1. ACI 318 appendix D is mandatory code for Post-install anchor. Installation shall be

strictly followed to manufacturer instruction

2. Adhesive anchor for masonry is not allowed to installed into structural member

3. Any equivalent to be submitted to structural designer with calculation sheet (ACI)

attached with valid ICC approval and other required certificate (s)

Specify word

DB16 x 160 mm. @200 with XXXXXXXor design resistance load equivalent (ACI)

General note

Section 031500_Concrete_Accessories_042013

Section 050519_Post_Installed_Concrete_Anchors_042013

Master specification


Specify anchor details in the drawings , General note and Master specification5


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General

Requirement


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4. Concrete side-face blowout (D.5.4)



3. Concrete pullout (D.5.3)

5. Bond strength of adhesive anchor (D.5.5)

Tension resistance : 5 Major formulas Shear resistance : 3 Major formulas



3. Concrete pry-out (D.6.3)

General Requirement


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General Requirement

ACI 318 Appendix D says that for post-installed anchors, test reports from

ACI 355.2 or ACI 355.4 qualification tests shall be used.


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How to find the ICC-ES Evaluation Report?

http://www.icc-es.org/Evaluation_Reports/1

Click Search Report2

Select anchor material from ICC report


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Identify preferred manufacturer

and / or product name

Click Search

Searching from this website, you will get genuine report with

no Photoshop!!!

3

4



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Make sure whats base material do you want to apply the anchor,

concrete or masonry!!!!

Check approved base material5


Product A

Product B


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Make sure whats base material do you want to apply the anchor,concrete or masonry!!!!

Click to see the report of the

product that you are interested !!6


Product A

Product B


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Now you get the genuine report easily


Product A


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Find Following Information in the ICC-ES Reports and state where

you found it

Examples :

ICC-ESR 2322 and ICC-ESR 2262

Approved base material Masonry or Concrete?


Product AProduct B


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Find Following Information in the ICC-ES Reports and state whereyou found it

Approved base material cracked or uncracked concrete?

Approved load condition Static , Dynamic , Seismic , Shock, Fatigue


Examples :


Product A Product B


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Approved base material cracked or non-cracked concrete?



Examples :ICC-ESR 2322 and ICC-ESR 2262

Product A Product B

Product A Product B


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Approved load condition Seismic



Examples :ICC-ESR 2322 and ICC-ESR 2262

Product A Product B

Product BProduct A


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Approved installed condition Dry ,Water-Saturated,Water-filled hole, UnderwaterFind Following Information in the ICC-ES Reports and state whereyou found it


Examples :



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Approved hole surface Hammer drill , Diamond core or both



Examples :



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Approved limitation and

minimum requirement

Threated rod : Anchor spacing , Edge distance ,

Member thickness



Examples :



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Approved limitation and

minimum requirement



Examples :


Rebar : Anchor spacing , Edge distance , Member

thickness


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Examples :

ICC-ESR 2322

Approved temperature Fit for our country ?

Examples :

ICC-ESR 2262

Maximum long term temperature Table 13, 14, 29, 30 (RE 500-SD)

Maximum long term temperature Table 12, 18 (HY 150 MAX)




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Other Installation : Borehole diameter



Examples :


Product A Product B


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Other Installation : Borehole depth



Examples :


Product A Product B


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Other Installation : Temperature of base meterial



Examples :



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Other Installation : Drilling method (hammer drill, diamond

core) and Borehole cleaning



Examples :



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ACI Design Example


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ACI Design Example


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ACI Design ExampleStep 1 : Check minimum edge distance, anchor spacing and member thickness

ACI 318-11 Appendix D

Sectio n 5.11

Sectio n 5.12


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ACI Design ExampleStep 1 : Check minimum edge distance, anchor spacing and member thickness

Sectio n 5.11

Sectio n 5.12hef,min = 2.75 in < hef = 9 in

Cmin = 2.5 in < Ca,min= 2.5 in

Smin = 2.5 in < S = 4 in

hmin = 10.25 in < h = 12 in


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ACI Design ExampleStep 3 : Determine concrete breakout strength


D.5.2.1 and Eq. (D-4)

D.5.2.1 and Eq. (D-5)


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D.5.2.5 and Eq . (D-10)


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ACI 318-11 Appendix D ACI 318-08 Appendix D

D.5.2.7 and Eq. (D-12)

Sectio n 4.1.10


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D.5.2.2 and Eq. (D-6)

D.5.2.1 and Eq. (D-4)

D.4.3 c)

Table 8

Table 8


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D.5.2.2 and Eq. (D-6)

D.5.2.1 and Eq. (D-4)

D.4.3 c)

Table 8

Table 8


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D.5.2.2 and Eq. (D-6)

D.5.2.1 and Eq. (D-4)

D.4.3 c)

Table 8

Table 8



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ACI Design ExampleStep 4 : Determine bond strength


D.5.5 and Eq. (D-19) Section 4.1.4

Eq. (D-16b)


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D.5.5 and Eq. (D-20)



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D.5.5 and Eq. (D-20)


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D.5.5 and Eq. (D-20)


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D.5.5 and Eq. (D-25)Section 4.1.4

Eq. (D-16m)

Section 4.1.4

Eq. (D-16m)




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Section 4.1.4

Eq. (D-16g)



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Section 4.1.4

Eq. (D-16h)

Sect ion 4.1.4

Eq . (D-16I)



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D.5.5 and Eq. (D-23)

D.5.5 an d Eq . (D-27)Section 4.1.4

Eq. (D-16p)




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D.5.5 and Eq. (D-22)Section 4.1.4

Eq. (D-16f)

D.5.5 and Eq. (D-19) Section 4.1.4

Eq. (D-16b)




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ACI Design ExampleStep 5 : Determine controlling strength



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ACI Design ExampleStep 6 : Determine strength to ASD using factor provided in Section 4.2

T l t t i t ll d h d i


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Major formula Sub formula Variable ICC

Number of formulas for Tension resistance checking

Steel failure 1 4

Concrete breakout 1 7 12 1

Concrete pullout 1 3 1

Concrete side face blowout 1 5

Bond strength (Adhesive anchor) 1 7 10 3

Number of formulas for Shear resistance checking

Steel failure 1 4

Concrete breakout 1 7 9

Concrete pryout 1 7 13 1

Total 8 28 60 6

To complete your post-installed anchor design,

you have to apply 6 factors from ICC to 8 major

formulas and 28 sub-formulas from ACI 318

Appendix D

Documents

Part2_CEAT_Post Installed Anchor - Design Part