(a)
If all the spacing and edge distance requirements are adequate.
Answer to Problem 7.3.1P
The spacing and the edge distance provided are adequate.
Explanation of Solution
Given:
Tension member is
Thickness of the gusset plate is
Diameter of the bolts is
Steel Used is
Calculation:
The properties for
The ultimate tensile stress is
Write the expression for minimum spacing.
Here, diameter of the bolt is
Substitute
The minimum spacing between the bolts is
For the edge distance to be adequate, the value of edge distance should be greater than or equal to the value of minimum edge distance.
Here, edge distance is
The value of edge distance is
Conclusion:
Thus, the spacing and the edge distance provided are adequate.
(b)
The nominal bearing strength of each bolt.
Answer to Problem 7.3.1P
The nominal bearing strength of the edge bolt is
Explanation of Solution
Calculation:
Write the expression for nominal bearing strength of a bolt.
Here, the nominal bearing strength is
With the upper limit of nominal bearing strength of the bolt,
Write the expression to calculate the value of
Here, height of the bolt is
Write the expression to calculate the value of
Here, spacing between the bolts is
Write the expression to calculate the height of the bolt.
Calculate the value of
Substitute
Calculate the value of
Substitute
Calculate the nominal bearing strength for edge bolts.
Substitute
Calculate the upper limit of nominal bearing strength for edge bolts.
Substitute
Thus, the minimum value of
Calculate the value of
Substitute
Calculate the nominal bearing strength for inner bolts.
Substitute
Calculate the upper limit of nominal bearing strength for inner bolts.
Substitute
Thus, the minimum value of
Conclusion:
Thus, the nominal bearing strength of the edge bolt is
Want to see more full solutions like this?
Chapter 7 Solutions
Steel Design (Activate Learning with these NEW titles from Engineering!)
- subject: Steel Design 1. A992 steel is used for the tension member shown. The bolts are 3/4 inch in diameter. The connection is to a 3/8 in.thick gusset plate. a. Determine the nominal strength based on the gross area. b. Determine the nominal strength based on the effective net are.arrow_forwardThe tension member shown in figure below is a PL ½ x 8 of A36 steel. The member is connected to a gusset plane with 1 ⅛ inch-diameter bolts. It is subjected to the dead and live loads shown. Does this member have enought strength? Assume that Ae=An. a. Use LRFD b. Use ASDarrow_forward1.A tension member is 25 mm thick plate as shown. The bolts are 20 mm. diameter high-strength bolts. The steel is A36. Compute the following: 130 mm 25 mm 0 0 a) The design strength for LFRD. b) The allowable strength for ASD. 25 mm CIVIL ENGINEERING STEEL DESIGNarrow_forward
- Considering the following steel connection. The plates in Pink are 9mm steel plates. The middle plate (Yellow) is 18mm thick. The width of the plate is 100mm. The maximum allowable tension stresses on any of the plates is 100Mpa in Gross Area Yielding and 150 Mpa for Net Area or Tension Rupture. The bolts used are 8mm in diameter, the holes are 10mm in diameter, no need to add 1.6mm. The bolts allow a maximum of 280 Mpa of shear. Determine the maximum allowable "P" of the connection in kN.arrow_forwardA double-angle shape is shown in the figure. The steel is A36, and the holes are for 2-inch-diameter bolts. Assume that A₂ = 0.75An. Ae 1 2 Determine the design tensile strength for LRFD. Determine the allowable strength for ASD. CIVIL ENGINEERING - STEEL DESIGN AL Section 2L5 x 3 x 516 LLBBarrow_forwardThe tension member is a PL 1⁄2 × 6. It is connected to a 3⁄8-inch-thick gusset plate with 7⁄8-inch-diameter bolts. Both components are of A242 steel. Note: A242 Fu = 70ksi dh = db + 1/16’’ Use: Consider deformation at the bolt holearrow_forward
- 2.) Compute the tensile capacity for the ½ inch thick plate shown. The bolts are 4 inch diameter high strength bolts. The steel is A36. -Pt 1arrow_forward4. An UPE 300 is to be used as a tension member and it is bolted to a 10mm thick gusset plate with bearing type 8-M20 8.8 bolts as shown in the figure below. a. Check all spacing and edge distance requirements. b. Compute the allowable tensile strength of the channel UPE 300. Don't consider shear strength of the bolts and bearing strength of the bolt holes. [all dimensions are in mm] Material both for gusset plate and UPE 300: S275 F-275N/mm² Fu=430N/mm² UPE 300 Ag = 5660 mm² tw 9.5 mm x = 28.9 mm 70 160 70 + 10mm thick gusset plate +50+ 80 -80-80-50 o +50+80 -80 80-50 UPE 300arrow_forwardThe connection shown is subjected to a tensile force of P = 100 kN. The allowable shear stress for the bolts is 100 MPa. Assume each bolt supports an equal portion of the load. Determine the required diameter of the bolts. a. 20.6 mm b. 25.2 mm c.35.7 mm d.17.8 mm choose letter of correct answerarrow_forward
- Determine the allowable tensile force P which can be appllied to the plates shown. The AISC specifications A36 steel and 20 mm diameter A325 bolts placed in standard holes with threads excluded from the shear plane are used in a bearing in a bearing type connection. Fy = 248 MPa, Fu = 400 MPa, Fv = 206.9 MPa and Fp = 1.5 Fu. P P CIVIZ 12mm 250 mm ENGINEERING - STEEL DESIGN 12mm P Parrow_forwardDesign the size and length of Fillet weld for the lap joint shown below, Use SMAW E70XX process, plates are A-36 steel? 90k LL 40k DL R-X7 5" Gusset P 8 90k LL 40k DLarrow_forwardA bolted connection shown consists of two plates 300mm x12mm connected by 4 - 22 mm diameter bolts. Edge distances = 75mm dhole for tensile and rupture = db + 3 mm dhole for bearing strength for Lc = db + 1.5 mm Fy = 248 Mpa Fu = 400 Mpa Fn = 330 Mpa Use LRFD design method. Determine the design strength due to the gross yielding of plates. (kN)arrow_forward
- Steel Design (Activate Learning with these NEW ti...Civil EngineeringISBN:9781337094740Author:Segui, William T.Publisher:Cengage Learning