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LCB/CB Column Bases

LCB/CB

The LCB/CB column bases help connect posts to the concrete for a broad range of members. The LCB has sizes available for 4x4, 4x6 and 6x6 solid sawn posts, while the CB bases accommodate glulam and solid sawn members ranging from 4x4 up to 12x12.

Material

  • Strap: LCB — 12 gauge; CB4x, CB5x, CB6x — 7 gauge; CB7x and larger — 3 gauge
  • Base: LCB — 16 gauge; CB4x through CB9x — 7 gauge; CB10x — 3 gauge

Finish

  • LCB, CB44, CB46, CB48, CB66, CB68, CB610 — galvanized; all other CB — Simpson Strong-Tie® gray paint or HDG. Some models available in HDG or stainless steel. See Corrosion Information.

Installation

  • Use all specified fasteners; see General Notes
  • For full loads, minimum side cover required is 3" for CB, 2" for LCB
  • Install all models with bottom of base plate flush with concrete
  • 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

  • LCB and CB are available in rough sizes. Other sizes available for CB; specify W1 and W2 dimensions. Consult Simpson Strong-Tie for bolt sizes and allowable loads. 
  • For ornamental alternatives, see OCB and CBPC products.

Related Literature

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.

  1. Loads may not be increaed for short-term loading.
  2. Concrete shall have a minimum compressive strength, f'c = 2500 psi.
  3. LCB products may be installed with either bolts OR nails (not both) to achieve table loads.
  4. Multiply Seismic and Wind ASD load values by 1.4 or 1.6 respectively to obtain LRFD capacities.
  5. 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.
  6. Download capacity shall be based on either the wood post design or concrete design calculated per code. See Post Capacities for common post allowable loads.
  7. Designer is responsible for concrete design. Minimum foundation dimensions are for anchorage only.
  8. Loads must not be increased by short-term loading.
  9. NAILS: 16d = 0.162" dia. x 3 1/2" long.
  10. See other nail sizes and information.

Code Reports

Part IAPMO UES ER ICC-ES ESR City of Los Angeles State of Florida
CBSee specific model numbers for code listings.
CB1010No code listing: Please contact us for test data.
CB1012No code listing: Please contact us for test data.
CB1212No code listing: Please contact us for test data.
CB44 ESR-3050 RR25985 FL10860
CB44SS No code listing. Please contact us for test data.
CB46 ESR-3050 RR25985 FL10860
CB46SS No code listing. Please contact us for test data.
CB48 ESR-3050 RR25985 FL10860
CB5-4.5No code listing: Please contact us for test data.
CB5-6No code listing: Please contact us for test data.
CB6-7No code listing: Please contact us for test data.
CB610No code listing: Please contact us for test data.
CB612No code listing: Please contact us for test data.
CB64No code listing: Please contact us for test data.
CB66 ESR-3050 RR25985 FL10860
CB66SS No code listing. Please contact us for test data.
CB68 ESR-3050 RR25985 FL10860
CB7 1/8-4No code listing: Please contact us for test data.
CB7 1/8-6No code listing: Please contact us for test data.
CB7 1/8-7No code listing: Please contact us for test data.
CB7-10.5No code listing: Please contact us for test data.
CB7-6No code listing: Please contact us for test data.
CB7-7.5No code listing: Please contact us for test data.
CB7-9No code listing: Please contact us for test data.
CB810No code listing: Please contact us for test data.
CB812No code listing: Please contact us for test data.
CB86No code listing: Please contact us for test data.
CB88No code listing: Please contact us for test data.
CB9-10.5No code listing: Please contact us for test data.
CB9-6No code listing: Please contact us for test data.
CB9-7.5No code listing: Please contact us for test data.
CB9-9No code listing: Please contact us for test data.
LCBSee specific model numbers for code listings.
LCB44 ESR-3050 RR25985 FL10860
LCB46No code listing: Please contact us for test data.
LCB66 ESR-3050 RR25985 FL10860

Drawings

Part Orthographic Perspective
CBNone
CB or LCB
DWG DXF
CB1010
CB1010
DWGDXF
CB1010 front view
DWG DXF
CB1010 left view
DWG DXF
CB1010 right view
DWG DXF
None
CB1012None None
CB1212None None
CB44
CB44
DWGDXF
CB44 front view
DWG DXF
CB44 left view
DWG DXF
CB44 right view
DWG DXF
CB44 top view
DWG DXF
None
CB44SSNone None
CB46
CB46
DWGDXF
CB46 front view
DWG DXF
CB46 right view
DWG DXF
CB46 top view
DWG DXF
None
CB46SSNone None
CB48None None
CB5-4.5None None
CB5-6None None
CB6-7None None
CB610None None
CB612None None
CB64None None
CB66
CB66
DWGDXF
CB66 front view
DWG DXF
CB66 left view
DWG DXF
CB66 right view
DWG DXF
CB66 top view
DWG DXF
None
CB66SSNone None
CB68None None
CB7 1/8-4None None
CB7 1/8-6None None
CB7 1/8-7None None
CB7-10.5None None
CB7-6None None
CB7-7.5None None
CB7-9None None
CB810None None
CB812None None
CB86None None
CB88
CB88
DWGDXF
CB88 front view
DWG DXF
CB88 left view
DWG DXF
CB88 right view
DWG DXF
CB88 top view
DWG DXF
None
CB9-10.5None None
CB9-6None None
CB9-7.5None None
CB9-9None None
LCBNone
CB or LCB
DWG DXF
LCB
DWG DXF
LCB44
LCB44
DWGDXF
LCB44 front view
DWG DXF
LCB44 left view
DWG DXF
LCB44 right view
DWG DXF
None
LCB46None None
LCB66
LCB66
DWGDXF
LCB66 front view
DWG DXF
LCB66 left view
DWG DXF
LCB66 right view
DWG DXF
None