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EPB Elevated Post Base

EPB

On This Page

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; 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); 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.

EPB44PHDG

Secured with Anchoring Adhesive:

  • Drill a 7/8"-diameter hole 4" deep minimum and fill the hole halfway with anchoring adhesive (per installation instructions). 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-3G™ and AT-XP® anchoring adhesives for additional information on hole cleaning procedures and cure times.

Supported by a Nut:

  • 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 Literature

Wood Construction Connectors 2021-2023
C-C-2021
A catalog including new product information as well as any applicable specification and installation instructions for wood-to-wood and wood-to-concrete structural connectors.
Catalog
Conectores para la construcción con madera 2019–2020
C-C-2019SP
El catálogo incluye información sobre nuevos productos, así como especificaciones e instrucciones de instalación aplicables para conectores estructurales de madera a madera y de madera a concreto.
Catalog
Connectors Installed on SCL Columns
T-C-SCLCLM21
A technical bulletin discussing the structural properties of the two different surface sides of SCL columns.
Technical Bulletin
Connectors Installed on SCL Columns
T-C-SCLCLMCAN20
A Canadian Limit States technical bulletin addressing typical installations of Simpson Strong-Tie® connectors on SCL columns as well as reduction factors for narrow-face SCL installations.
Technical Bulletin

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.

    Many of these products are approved for installation with Strong-Drive® SD Connector screws.

Typical EPB44A Installation
  1. Loads may not be increased for duration of load.
  2. Concrete shall have a minimum compressive strength of f'c = 2,500 psi.
  3. Multiply Seismic and Wind ASD uplift and lateral load values by 1.43 or 1.67, 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. Downloads shall be reduced where limited by capacity of the post.
  6. Designer is responsible for concrete design.
  7. For full loads, the distance to the nearest concrete edge is 4" minimum from the EPB center line.
  8. Structural composite lumber columns have sides that show either 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 resulting from narrow-face installations.
  9. Fasteners: Nail dimensions in the table are listed diameter by length. For additional information, see Fastener Types and Sizes Specified for Simpson Strong-Tie Connectors.
  1. Loads may not be increased for duration of load.
  2. Uplift loads require the threaded rod to be attached to cured concrete with SET-3G™ or AT-XP® anchoring adhesive. Cast-in-place installations 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 capacity of the post.
  5. Structural composite lumber columns have sides that show either the wide face or the edges of the lumber strands/veneers. For SCL columns, the fasteners for these products should always be installed in the wide face. See technical bulletin T-C-SCLCLM for load reductions resulting from narrow-face installations.
  6. Adhesive anchor design assumptions:
    1. (a) Uncracked dry concrete
    2. (b) Anchors not for use in SDC C-F where load combos include earthquake load
    3. (c) Temperature range: Maximum short term temperature = 176°F, Maximum long term temperature = 110°F
    4. (d) Periodic special inspection assumed per code report
    5. (e) Minimum concrete strength of 2,500 psi.
  7. Nail dimensions in the table are listed diameter by length. For additional information, see Fastener Types and Sizes Specified for Simpson Strong-Tie Connectors.
Load Values with Strong-Drive® SD Connector Screws
ModelNo. Nominal Post Size Fasteners Allowable Loads
Post Flange Base Bottom Uplift Lateral F1 Lateral F2 Download
BASES

    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.

  1. Must be installed in pairs.
  2. Load shown for SET epoxy. For AT adhesive use 985 lbs.
EPB44 4x 8-SD10112 - 1975 795 1235 3465

Code Reports & Compliance

Drawings

PDF DWG DXF RFA IFC SAT

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