Scribd
Upload
424 views4 pages

Anchor Rod Shear and Tension - As Per AISC LRFD

The document discusses the shear and tension requirements for anchor rods according to the AISC LRFD specifications. It provides the specifications, details of the anchor bolts being analyzed including diameter, grade, number taking shear and tension. It then shows calculations for the shear and tensile strength of the bolt group and compares it to the required values, finding it sufficient. It also checks that the percentage of combined shear and tension does not exceed 30% which would require further checking.

Uploaded by

Rajasekar Meghanadh
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLSX, PDF, TXT or read online on Scribd
424 views4 pages

Anchor Rod Shear and Tension - As Per AISC LRFD

The document discusses the shear and tension requirements for anchor rods according to the AISC LRFD specifications. It provides the specifications, details of the anchor bolts being analyzed including diameter, grade, number taking shear and tension. It then shows calculations for the shear and tensile strength of the bolt group and compares it to the required values, finding it sufficient. It also checks that the percentage of combined shear and tension does not exceed 30% which would require further checking.

Uploaded by

Rajasekar Meghanadh
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLSX, PDF, TXT or read online on Scribd
You are on page 1/ 4

Anchor Rod Shear and Tension - As Per AISC LRFD

LRFD Spec Requirements :


The LRFD Specification defines the Anchor rod (Bolts) Shear and Tension limit states in section J3.6 & J3.7
and Table J3.2 & J 3.5

Anchor Bolt diameter = 16 mm


= 0.63 inch

Anchor Bolt Grade = A325


From Table J3.2
Nominal Shear Strength Fv = 54 KSI
Nominal Shear Strength FT = 90 KSI
Number of Bolts taking Shear = 4 Nos
Number of Bolts Taking Tension = 2 Nos
Anchor Rod resistance factor Ø = 0.75
From STAAD, 2062
MAXIMUM TENSION LOAD, = 20 KN
SHEAR = 21 KN
SHEAR = 11 KN
Resultant = 23.71 KN

calculated Shear Strength of bolt Group V ub = 50.46 Kips


= 224.45123 KN >
Hence OK

calculated Tensile Strength of bolt Group T ub = Ø Ft Ab


= 42.05 Kips
= 187.04269 KN >

Since the Percentage is less than 30 percentage combined shear and Tebnsion need not be checked. 16.1-1.34 LRFD

Anchor Rod Shear Stress fv = Vu / Number of Bolts X A


= 4.27761

Nominal Tensile Strength Ksi = 117


Table J3.5 = 110.58

calculated Tensile Strength of bolt Group T ub Ø Ft Ab


=
= 51.66829
= 229.82
Hence OK
V ub Ø Fv A b
≤

T ub Ø Ft A b
≤

23.71 KN
5.33 KIPS 0.11 Percentage

20 KN
4.50 KIPS 0.11 Percentage
ked. 16.1-1.34 LRFD

Vu / Number of Bolts X Area of Anchor Bolt


Kips
NEED NOT BE CHECKED

- 1.5 fv ≤ 90
Kips ≤ 90

Ø Ft Ab
KIPS
kN > 20 KN
Anchor Rod Shear and Tension - As Per AISC LRFD

LRFD Spec Requirements :


The LRFD Specification defines the Anchor rod (Bolts) Shear and Tension limit states in section J3.6 & J3.7
and Table J3.2 & J 3.5

Anchor Bolt diameter = 16 mm


= 0.63 inch

Anchor Bolt Grade = A325


From Table J3.2
Nominal Shear Strength Fv = 54 KSI
Nominal Shear Strength FT = 90 KSI
Number of Bolts taking Shear = 4 Nos
Number of Bolts Taking Tension = 2 Nos
Anchor Rod resistance factor Ø = 0.75
From STAAD, 2062
MAXIMUM TENSION LOAD, = 54 KN
SHEAR = 15 KN
SHEAR = 5 KN
Resultant = 15.81 KN

calculated Shear Strength of bolt Group V ub = 50.46115692 Kips


= 224.45123 KN >
Hence OK

calculated Tensile Strength of bolt Group T ub = Ø Ft Ab


= 42.05 Kips
= 187.04269 KN >

Since the Percentage is less than 30 percentage combined shear and Tebnsion need not be checked. 16.1-1.34 LRFD

Anchor Rod Shear Stress fv = Vu / Number of Bolts X A


= 2.853008

Nominal Tensile Strength Ksi = 117


Table J3.5 = 112.72

calculated Tensile Strength of bolt Group T ub Ø Ft Ab


=
= 52.66672
= 234.26
Hence OK
V ub Ø Fv A b
≤

T ub Ø Ft A b
≤

15.81 KN
3.55 KIPS 0.07 Percentage

54 KN
12.14 KIPS 0.29 Percentage
ked. 16.1-1.34 LRFD

Vu / Number of Bolts X Area of Anchor Bolt


Kips
NEED NOT BE CHECKED

- 1.5 fv ≤ 90
Kips ≤ 90

Ø Ft Ab
KIPS
kN > 54 KN

You might also like