1. Home
  2. Programs
  3. Engineering Services (DES)
  4. Authorized Materials Lists (AML)
  5. Stud Type Mechanical Expansion Anchors (MEA)

Stud Type Mechanical Expansion Anchors (MEA)

Last edit date: 11/4/2022
MEA
Diameter		 Type(3) Manufacturer Product Name Material Type ESR (4) Stud
Diameter		 Anchor
Length (5)		 hef (3) Tinst (2),(3),(6)
3/8"W Dewalt Power-Stud + SD4/SD6 Anchor Stainless Steel 2502 3/8"2-3/4" 1-1/2"25 ft-lbs
W Hilti Corporation North America Kwik Bolt TZ Stainless Steel 1917 3/8"3" 2"25 ft-lbs
W Hilti Corporation North America Kwik Bolt TZ2 Stainless Steel 4266 3/8"3" 2"30 ft-lbs
3-1/2" 2-1/2"
W Simpson Strong Tie Strong-Bolt 2 Stainless Steel 3037 3/8"2-3/4" 1-1/2"30 ft-lbs
3-1/2" 2-1/2"
1/2"W Dewalt Power-Stud + SD4/SD6 Anchor Stainless Steel 2502 1/2"3-3/4" 2"40 ft-lbs
W Hilti Corporation North America Kwik Bolt TZ Stainless Steel 1917 1/2"3-3/4" 2"40 ft-lbs
5-1/2" 3-1/4"
W Hilti Corporation North America Kwik Bolt TZ2 Stainless Steel 4266 1/2"3-3/4" 2"40 ft-lbs
3-3/4" 2-1/2"
4-1/2" 3-1/4"
W Simpson Strong Tie Strong-Bolt 2 Stainless Steel 3037 1/2"3-3/4" 3-3/8"65 ft-lbs

Notes:

  1. The Stud MEA size and structural capacity of an individual Stud MEA anchor or anchor group shall be determined based on ACI 318-14, or later editions. Refer to the Division of Engineering Service’s Structural Design Alert – Anchorage to Concrete, dated 5/11/2020.
  2. The Stud MEAs are to be installed in accordance with the manufacturer’s installation instructions.
  3. ‘W’ = Wedge, ‘hef’ = Effective Embedment Depth, ‘Tinst’ = Installation Torque.
  4. International Code Council - Evaluation Service Report (ICC-ESR) per ACI 355.2.
  5. Anchor lengths shown are minimum acceptable lengths. The use of longer anchors is permitted.
  6. Installation torque subject to change. Refer to product installation information to confirm the installation torque.
  7. See Figure 1: Stud MEA.
Figure 1: Stud MEA
Figure 1: Stud MEA

Caltrans contact: Joe Harline, (916) 206-4373, joe.harline@dot.ca.gov