EPB Elevated Post Base

These cast-in-place post bases provide a secure connection to the concrete and the code-required 1" standoff to help prevent rot at the post end.

EPB44PHDG can be used both for pier block and cast-in-place installation for 4x4 posts.

Material

• EPB44A — 14 gauge; EPB44, EPB46, EPB66 — 12-gauge base plate, 1 1/16" OD x 8" pipe; EPB44T — 12-gauge base, threaded rod support 5/8" x 6" (shipped assembled); EPB44PHDG — 12-gauge base, threaded rod support 3/4" x 6" (nut and washer are shipped assembled)

Finish

• EPB44A — galvanized; EPB44, EPB46, EPB66 — Simpson Strong-Tie^® gray paint (may be ordered HDG); EPB44T: base — galvanized, threaded rod — zinc plate; EPB44PHDG — HDG. See Corrosion Information.

Installation

EPB44A/EPB44/EPB46/EPB66

• Use all specified fasteners; see General Notes.
• Allows 1" to 2 1/2" clearance above concrete, 2" for EPB44A.

EPB44T/EPB44PHDG

Secured with Anchoring Adhesive:

• EPB44T — Drill a 3/4" hole 4" deep minimum into the concrete. Clean the hole and fill half full with anchoring adhesive (per installation instructions). Insert the EPB44T and adjust to the desired height. The threaded rod shall be embedded a minimum of 3 1/2". To adjust after the anchoring adhesive cures, drill a hole in the center of the post and rotate the post base up or down to the desired height.
• EPB44PHDG — Drill a 7/8"-diameter hole 4" deep minimum and fill the hole halfway with anchoring adhesive. Insert the EPB44PHDG and adjust to the desired height. The threaded rod shall be embedded a minimum of 3 1/2". Minimum sidecover is 3" from the center of the threaded rod for both products.
• See SET-XP^® and AT-XP^® anchoring adhesives for additional information on hole cleaning procedures and cure times.

Supported by a Nut:

• EPB44T — Drill a 3/4" hole 2 1/2" deep minimum into concrete. Install a 5/8-11 NC nut and cut washer on the threaded rod. (Nut and washer not supplied). Insert EPB44T into the hole and adjust to the desired height.
• EPB44PHDG — Drill a 1"-diameter hole 3 1/2" deep minimum. Insert the EPB44PHDG and adjust to the desired height.

Cast-in-Place:

• Embedded end to have a nut and bearing plate with a minimum embedment of 4" from top of concrete to the top of plate.
• Minimum sidecover is 3" from the center of the threaded rod.
• Fully engage at least three threads in the base. 

Post bases do not provide adequate resistance to prevent members from rotating about the base and therefore are not recommended for non-top-supported installations (such as fences or unbraced carports).

Options

• 12" pipe available for EPB44, 46, 66; specify "-12" after model number

Related Links

• Wood Construction Connectors Technical and Installation Notes
• General Notes
• Corrosion Information
• Corrosion-Resistant Products

Catalog Pages

• C-C-2017 (Wood Construction Connectors), pages 96–97

Related Literature

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Complete product and application information, as well as load tables and installation information, for more than 3,000 wood-to-wood, wood-to-concrete and wood-to-masonry connectors.

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Load Tables

    These products are available with additional corrosion protection. Additional products on this page may also be available with this option, check with Simpson Strong-Tie for details.

   These models are approved for installation with the Strong-Drive® SD Connector screw. See the load values below.

Typical EPB44A Installation

1. Loads may not be increased for short-term loading.
2. Concrete shall have a minimum compressive strength, f'_c = 2500 psi.
3. Multiply Seismic and Wind ASD load values by 1.4 or 1.6 respectively to obtain LRFD capacities.
4. In accordance with IBC Section 1613.1, detached one- and two-family dwellings in Seismic Design Category (SDC) C may use “Wind and SDC A&B” allowable loads.
5. Download shall be reduced where limited by the design capacity of the column. See Post Capacities for common post allowable loads.
6. Designer is responsible for concrete design.
7. For full loads, nearest concrete edge required is 4" from EPB center line.
8. Structural composite lumber columns have sides that either show the wide face or the edges of the lumber strands/veneers known as the narrow face. Values in the tables reflect installation into the wide face. See technical bulletin T-C-SCLCLM for load reductions due to narrow face installations.
9. NAILS: 16d = 0.162" dia. x 3 1/2" long. See other nail sizes and information.

    These products are available with additional corrosion protection. Additional products on this page may also be available with this option, check with Simpson Strong-Tie for details.

   These models are approved for installation with the Strong-Drive® SD Connector screw. See the load values below.

1. Loads may not be increased for short-term loading.
2. Uplift loads require the threaded rod to be attached to cured concrete with SET-XP® or AT-XP® anchoring adhesive. Cast-in-place install must have a nut and bearing plate embedded in concrete. Uplift loads do not apply when installed to a pier block.
3. Designer is responsible for concrete design.
4. Downloads shall be reduced where limited by the capacity of the post. See here for common post allowable loads
5. Structural composite lumber columns have sides that either show the wide face or the edges of the lumber strands/veneers known as the narrow face. Values in the tables reflect installation into the wide face. See technical bulletin T-C-SCLCLM for load reductions due to narrow face installations.
6. Adhesive anchor design assumptions:
   a) Uncracked-dry concrete
   b) Anchors not for use in SDC C-F where load combos include earthquake
   c) Temperature range 1 or 2 acceptable
   d) Periodic special inspection assumed per code report
   e) Minimum concrete strength of 2,500 psi.
7. NAILS: 16d = 0.162" dia. x 3 1/2" long. See other nail sizes and information.

Code Reports