• Codes
  • Features

    Features Overview

    Go to features
    Reference

    Reference.

    A reliable and up-to-date source of codes.
    Research

    Research.

    Rapidly and efficiently calculate project parameters.
    Collaboration

    Collaboration.

    Get everyone on the same page and streamline code research.
    Workflows
    Architects General Contractor Building Official & Plans Examiner Inspectors Owner Subcontractors Code Consultants
  • Pricing
  • Login
  • Sign Up
Sign Up
Login
  • Code Library
  • Features
  • Pricing
  • About
  • Careers
  • Help
  • Contact
  • Terms
  • Privacy
Sign Up
Upgrade to Premium
Code calculators: Code Calculators automatically generates a detailed list of requirements.
REFERENCE
Amendment Styling
Industry-leading search
Suggested code sections
Code diagrams
RESEARCH
Code calculators
Filter by topic
Code compare
Code sheet exports
COLLABORATION
Team projects
Bookmarks
Comments
START 2 WEEK FREE TRIAL
Have an account? Sign in
// CODE SNIPPET

R608.5.4 Reinforcement Installation Details

Los Angeles Residential Code > 6 Wall Construction > R608 Exterior Concrete Wall Construction > R608.5 Materials > R608.5.4 Reinforcement Installation Details
JUMP TO FULL CODE CHAPTER

TABLE R608.5.4(1)

LAP SPLICE AND TENSION DEVELOPMENT LENGTHS

BAR SIZE NO.YIELD STRENGTH OF STEEL, fy- psi (MPa)
40,000 (280)60,000 (420)
Splice length or tension development length (inches)
Lap splice length-tension42030
52538
63045
Tension development length for straight bar41523
51928
62334
Tension development length for: a. 90-degree and 180-degree standard hooks with not less than 21/2 inches of side cover perpendicular to plane of hook, and b. 90-degree standard hooks with not less than 2 inches of cover on the bar extension beyond the hook.469
5711
6813
Tension development length for bar with 90-degree or 180-degree standard hook having less cover than required above.4812
51015
61218

For SI: 1 inch = 25.4 mm.

For SI: 1 inch = 25.4 mm.

FIGURE R608.5.4(1)

LAP SPLICES

For SI: 1 degree = 0.0175 rad.

FIGURE R608.5.4(2)

DEVELOPMENT LENGTH AND COVER FOR HOOKS AND BAR EXTENSION

For SI: 1 inch = 25.4 mm, 1 degree = 0.0175 rad.

FIGURE R608.5.4(3)

STANDARD HOOKS

TABLE R608.5.4(2)

MAXIMUM SPACING FOR ALTERNATIVE BAR SIZE AND/OR ALTERNATIVE GRADE OF STEELa, b, c

BAR SPACING FROM APPLICABLE TABLE IN SECTION R608.6 (inches)BAR SIZE FROM APPLICABLE TABLE IN SECTION R608.6
#4#5#6
Alternate bar size and/or alternate grade of steel desired
Grade 60Grade 40Grade 60Grade 40Grade 60Grade 40
#5#6#4#5#6#4#6#4#5#6#4#5#4#5#6
Maximum spacing for alternate bar size and/or alternate grade of steel (inches)
81218581251135846245
91420691361346946346
1016227101561447957357
11172471116716571058357
12192681218817581158468
13202991319818691269469
142231914219206913610479
1523331016221021610147115710
1625351117231023711157115811
1726371118251124711168125811
1828401219261226812178135812
1929421320281227813189136913
2031441321291328913199146913
213346142231143091420101561014
223448152332143191521101671015
2336481524341533101522101671115
2437481625351534101623111771116
2539481726371635111724111881217
2640481727381737111725121881217
2742481828401738121826121981318
2843481929411840121926132081319
2945481930431941121927132091419
3047482031441943132028142191420
3148482132452044132129142291521
32484821334721451421301523101521
33484822344821471422311523101622
34484823354822481523321524101623
35484823364823481523331625111623
36484824374823481524341625111724
37484825384824481625351726111725
38484825394825481625361727121825
39484826404825481726371827121826
40484827414826481727381828121927
41484827424826481827391929121927
42484828434827481828401930132028
43484829444828481829412030132029
44484829454828481929422031132129
45484830474829481930432032142130
46484831484830482031442132142231
47484831484830482031442133142231
48484832484831482132452234152332

For SI: 1 inch = 25.4 mm.

  1. This table is for use with tables in Section R608.6 that specify the minimum bar size and maximum spacing of vertical wall reinforcement for foundation walls and above-grade walls. Reinforcement specified in tables in Section R608.6 is based on Grade 60 (420 MPa) steel reinforcement.
  2. Bar spacing shall not exceed 48 inches on center and shall be not less than one-half the nominal wall thickness.
  3. For Grade 50 (350 MPa) steel bars (ASTM A996, Type R), use spacing for Grade 40 (280 MPa) bars or interpolate between Grade 40 (280 MPa) and Grade 60 (420 MPa).

R608.5.4.1 Support and Cover

Reinforcement shall be secured in the proper location in the forms with tie wire or other bar support system such that displacement will not occur during the concrete placement operation. Steel reinforcement in concrete cast against the earth shall have a minimum cover of 3 inches (76 mm). Minimum cover for reinforcement in concrete cast in removable forms that will be exposed to the earth or weather shall be 11/2 inches (38 mm) for No. 5 bars and smaller, and 2 inches (50 mm) for No. 6 bars and larger. For concrete cast in removable forms that will not be exposed to the earth or weather, and for concrete cast in stay-in-place forms, minimum cover shall be 3/4 inch (19 mm). The minus tolerance for cover shall not exceed the smaller of one-third the required cover and 3/8 inch (10 mm). See Section R608.5.4.4 for cover requirements for hooks of bars developed in tension.

R608.5.4.2 Location of Reinforcement in Walls

For location of reinforcement in foundation walls and above-grade walls, see Sections R404.1.3.3.7.2 and R608.6.5, respectively.

R608.5.4.3 Lap Splices

Vertical and horizontal wall reinforcement required by Sections R608.6 and R608.7 shall be the longest lengths practical. Where splices are necessary in reinforcement, the length of lap splices shall be in accordance with Table R608.5.4(1) and Figure R608.5.4(1). The maximum gap between noncontact parallel bars at a lap splice shall not exceed the smaller of one-fifth the required lap length and 6 inches (152 mm). See Figure R608.5.4(1).

R608.5.4.4 Development of Bars in Tension

Where bars are required to be developed in tension by other provisions of this code, development lengths and cover for hooks and bar extensions shall comply with Table R608.5.4(1) and Figure R608.5.4(2). The development lengths shown in Table R608.5.4(1) shall apply to bundled bars in lintels installed in accordance with Section R608.8.2.2.

R608.5.4.5 Standard Hooks

Where reinforcement is required by this code to terminate with a standard hook, the hook shall comply with Figure R608.5.4(3).

R608.5.4.6 Webs of Waffle-Grid Walls

Reinforcement, including stirrups, shall not be placed in webs of waffle-grid walls, including lintels. Webs are permitted to have form ties.

R608.5.4.7 Alternate Grade of Reinforcement and Spacing

Where tables in Sections R404.1.3 and R608.6 specify vertical wall reinforcement based on minimum bar size and maximum spacing, which are based on Grade 60 (420 MPa) steel reinforcement, different size bars or bars made from a different grade of steel are permitted provided an equivalent area of steel per linear foot of wall is provided. Use of Table R608.5.4(2) is permitted to determine the maximum bar spacing for different bar sizes than specified in the tables and/or bars made from a different grade of steel. Bars shall not be spaced less than one-half the wall thickness, or more than 48 inches (1219 mm) on center.

Related Code Sections


R608.5.4 Wall Construction, Reinforcement Installation Details
with tables in Section R608.6 that specify the minimum bar size and maximum spacing of vertical wall reinforcement for foundation walls and above-grade ...
Los Angeles Residential Code > 6 Wall Construction > R608 Exterior Concrete Wall Construction > R608.5 Materials > R608.5.4 Reinforcement Installation Details
R608.5.4 Wall Construction, Reinforcement Installation Details
spacing of vertical wall reinforcement for foundation walls and above-grade walls. Reinforcement specified in tables in Section R608.6 is based on Grade 60 ...
Los Angeles Residential Code > 6 Wall Construction > R608 Exterior Concrete Wall Construction > R608.5 Materials > R608.5.4 Reinforcement Installation Details
R608.5.4.1 Wall Construction, Support and Cover
Reinforcement shall be secured in the proper location in the forms with tie wire or other bar support system such that displacement will not occur ...
Los Angeles Residential Code > 6 Wall Construction > R608 Exterior Concrete Wall Construction > R608.5 Materials > R608.5.4 Reinforcement Installation Details > R608.5.4.1 Support and Cover
R608.5.4.3 Wall Construction, Lap Splices
Vertical and horizontal wall reinforcement required by Sections R608.6 and R608.7 shall be the longest lengths practical. Where splices are necessary ...
Los Angeles Residential Code > 6 Wall Construction > R608 Exterior Concrete Wall Construction > R608.5 Materials > R608.5.4 Reinforcement Installation Details > R608.5.4.3 Lap Splices
R608.5.4.3 Wall Construction, Lap Splices
Vertical and horizontal wall reinforcement required by Sections R608.6 and R608.7 shall be the longest lengths practical. Where splices are necessary ...
Los Angeles Residential Code > 6 Wall Construction > R608 Exterior Concrete Wall Construction > R608.5 Materials > R608.5.4 Reinforcement Installation Details > R608.5.4.3 Lap Splices
Help Contact Us Privacy Terms
Code Compare
Code Compare
Highlight differences between any two building codes.
Code sheet exports
Code sheet exports
Generate a code sheet that integrates with your drawing set.
Code Calculators
Code Calculators
Code calculators automatically generate a detailed list of requirements.
Shared projects
Shared projects
Projects provide a dedicated space to collaborate on code research.
Code diagrams
Code diagrams
Unpack the code through illustrations and descriptions.
Search
Search
Don't miss relevant code. Quickly locate sections across your jurisdiction.
UpCodes Premium
Leverage the most sophisticated code compliance platform.
TRY FREE FOR TWO WEEKS VISIT PRICING
UpCodes Premium
Leverage the full code compliance platform.
START 2 WEEK FREE TRIAL LEARN MORE