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AmericanConcreteInstitute2015.Allrightsreserved.Nopartofthispublication

maybereproduced,copied,distributed,ortransmittedinanyform.

WWW.CONCRETE.ORG/ACI318 1

Chapter 26 - ConstructionDocuments and Inspection

ACI 318-14:

Reorganized for Design


Background

Provisions dispersed

Mixed in with design provisions

Some provisions required interpretation

Often difficult to tell when all constructionprovisions were met


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Ch. 26 Construction Documents and Inspection

Purpose

Define the responsibility of the LDP regarding

minimum information in construction documents.

Why?

Increased awareness and clarity

Confusion regarding how ACI 318 was intendedto be used

Avoid general compliance statements


26.1: Scope of Construction Documents

Information conveyed to the contractor


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Design information

Developed during design phase by the LDP

Specific to the job

Describes the construction of the work

Example: member dimensions


Compliance requirements

General provisions

Minimum quality levels

LDP selects the requirements that areapplicable

ACI 301 is consistent with the compliancerequirements in Chapter 26

Example: Allowable ASTM specifications forcement


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Example of 318-11 Construction Provision

21.9.9 Construction Joints All concrete construction joints in structural walls shall

conform to 6.4 and contact surfaces shall be roughenedas in 11.6.9

6.4.3 Construction joints shall be made and located as not to

impair the strength of the structure. Provision shall bemade for transfer of shear and other forces throughconstruction joints. See 11.6.9

11.6.9 When concrete is placed against previously hardened

concrete, the interface for shear transfer shall be cleanand free of laitance. If is assumed equal to 1.0, theinterface shall be roughened to a full amplitude ofapproximately in.


Same Example in 318-14

26.5.6 Construction, contraction, andisolation joints

26.5.6.1 Design information

(b) Details required for transfer of shear and other

forces through construction joints.

(c) Surface preparation, including intentionalroughening of hardened concrete surfaces where

concrete is to be placed against hardened

concrete.

26.5.6.2 Compliance requirements

(d) Construction joints shall be cleaned andlaitance removed before new concrete is placed.


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26.1: Scope of Construction Documents

Code is written to LDP

References directing the contractor to thecode are to be avoided


Typical Drawing General Note

Al l la p sp lic e s sho w n o n th e se d ra w ing s sha ll

c o nform to AC I 318-11, C ha p ter 12.

Who designs the lap splice?

A. Contractor

B. Reinforcing steel placing subcontractorC. Reinforcing steel detailer


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Is this any better?

Al l la p sp lic e leng ths sha ll b e sho w n o n the

shop (p la c ing ) d ra w ing s a nd subm it ted to the

Eng ine er fo r a p p ro va l.

Now the Engineer has some responsibility..

But is he/she really designing the lap splicelength?


318-14 Conformance

Al l la p sp lic e s sha ll c o nfo rm to the fol lo w ing

t ab l e :

Bar

Size

Lap Splice Length, in.

Beams, Slabs Columns

# 3 19 NA

# 4 25 NA

# 5 31 NA

# 6 37 NA

# 7 54 NA

# 8 62 51

: : :


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How is this chapter used?

Checklist

Only applicable requirements

Do not reference chapter

Copy/modify compliance requirements

R26.1.1(a)


Use of ACI 301

ACI 301 Checklists

Coordination with corporate specs

Read it!


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Ch. 26 Construction Documents and Inspection

13 sections in Ch. 26

ScopeDesigncriteria

MemberInformation

Concretematerials&mixture

requirements

Concreteproduction&construction

Reinforcement

materials&

constructionreqts.Anchoring

toconcreteEmbedments

Additionalreqts

forprecast

Additional reqts for

prestressed

Formwork

Evaluation&acceptance

Inspection

LDP


26.2: Design Criteria

Governing buildingcode

Design loads

Delegated designs(e.g. formwork andshoring, precast)


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A. CODESANDSTANDARDS

1. THEFOLLOWINGCODESANDSTANDARDS,INCLUDINGALL

SPECIFICATIONSREFERENCEDWITHINSHALLAPPLYTOALL

WORKPERFORMEDONTHEPROJECT.USETHELATESTEDITIONS

UNLESSNOTEDOTHERWISE.

a. THEINTERNATIONALBUILDINGCODE 2015,

INTERNATIONALCODECOUNCIL

b. MINIMUMDESIGNLOADSFORBUILDINGSANDOTHER

STRUCTURES(ASCE7),AMERICANSOCIETYOFCIVIL

ENGINEERS

c. BUILDINGCODEREQUIREMENTSFORSTRUCTURAL

CONCRETE(ACI

318

14),

AMERICAN

CONCRETE

INSTITUTE

d. ACIMANUALOFCONCRETEPRACTICE(2014) PARTS1

THROUGH7,AMERICANCONCRETEINSTITUTE

Example Governing Building Code


Example Design loadsB. DESIGNDATA

1. GRAVITY SUPERIMPOSEDDEADLOADS

AREA PSF

FLOORS 05

ROOF 05

2. GRAVITY FLOORLIVELOADS

LIVELOADSONFOUNDATIONS,COLUMNS,BEAMS,ETC.AREREDUCIBLEIN

ACCORDANCEWITHTHEBUILDINGCODE.UNREDUCIBLELOADSARE

FOLLOWEDBY(U)

AREA PSF

PARKINGGARAGES 40(U)

PARKINGGARAGES,TOPFLOOR 40 SNOWLOAD

INDICATEDBELOW

STAIRS&EXITWAYS 100(U)


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26.3 Member information

Design Information

Member size and location

Plans

Sections

Details

Tolerances

ACI 117 for cast-in-place

ACI ITG-7 for precast


26.4 Concrete materials and mixture requirements

COMPLIANCE REQUIREMENTS

Cementitious materials

Aggregates

Water

Admixtures

Steel fibers

Concrete mixtures

Proportioning

Mixture characteristics

DESIGN INFORMATION

Concrete mixtures


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Aggregates

Water

Admixtures

Steel fibers

Concrete mixtures

Proportioning


ASTM Standards

Exceptions

Make selections whereappropriate


Ternary blend*

Adds ternary blended hydraulic cement*

Type IT (S>70)


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Add corrosion inhibiting admixture *





Aggregates

Water

Admixtures

Steel fibers

Concrete mixtures

Proportioning


fc at stages

Limits on SCMs

Proportioning method

Documentation


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Example from 301

ACI 318-14 ACI 301-10

Cementitiousmaterials

Maximumpercentof

totalcementitious

materialsbymass

Flyashorotherpozzolans

conformingtoASTMC618 25

Slagcementconformingto

ASTMC989 50

Silicafumeconformingto

ASTMC1240 10

Totalofflyashorother

pozzolansandsilicafume 35


pozzolans,slagcement,and

silicafume

50

Table26.4.2.2(b)Limitsoncementitiousmaterials

forconcreteassignedtoExposureClassF3

Cementitiousmaterials

Maximumpercentof

totalcementitious

materialbyweight

Flyashorotherpozzolans

conformingtoASTMC618 25

Slagcementconformingto

ASTMC989 50

Silicafumeconformingto

ASTMC1240 10


pozzolans,slagcement,andsilicafume

50


pozzolansandsilicafume 35

Table4.2.2.7.b.2Maximumcementitious

materialsrequirements forconcreteexposedto

deicingchemicals



DESIGN INFORMATION

Concrete mixtures Based on exposure

fc & test age

Maximum w/c m

Aggregate size

Air content

Chloride ion limits

Cementitious materialstypes

Calcium chloriderestrictions


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Example - Aggregate

Section 26.4.2.1

Select aggregate size. Do not copy to drawings

(4)Nominalmaximumsizeofcoarseaggregatenottoexceedthe

leastof(i),(ii),and(iii):

(i)onefifththenarrowestdimensionbetweensidesofforms

(ii)onethirdthedepthofslabs

(iii)threefourthstheminimumspecifiedclearspacingbetween

individualreinforcingbarsorwires,bundlesofbars,prestressed

reinforcement,individualtendons,bundledtendons,orducts


26.5 Concrete production and construction

Design information

Field-cured cylinders

Temperature limits in hot and cold weather

Joint details and locations

Slab-on-ground diaphragms

Slab and column concrete integration


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26.5 Concrete production and construction

Compliance requirements

Material handling and batching

Placement and consolidation

Curing

Hot and cold weather procedures

Joint details and locations


Tolerance on d and specified cover

Section 26.6.2.1(a), Design information


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d

>

8

in.

Specified

Cover

Specified

Cover

26.6.2.1(a) Tolerances on d and Specified Cover

in.

in.

No Specified

Tolerance

in.

in.

h

+1/2,

3/8

in.

for

12

in.