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LMAZ/MAB/MASB Mudsill Anchors

LMAZ/MAB/MASB

Mudsill anchors provide an alternative to anchor bolts. They easily mount on forms and make finishing easier. The unique design provides installation flexibility, eliminating problems with misplaced anchor bolts. Suitable for stemwall or slab foundations, mudsill anchors are one piece so there are no more nuts and washers to lose.

LMAZ — an economical replacement for 1/2" sill plate anchor bolts
MAB/MASB — anchors mudsill to concrete block, poured walls or slab foundations

Material

  • LMAZ, MAB — 18 gauge; MASB — 16 gauge

Finish

  • MAB, MASB — galvanized (also available in ZMAX® coating); LMAZ — ZMAX only. See Corrosion Information.

Installation

  • Use all specified fasteners; see General Notes.
  • LMAZ/MAB:
    - CMU shall have a minimum f'm = 1,500 psi and concrete shall have a minimum f'c = 2,000 psi.
    - Not for use where a horizontal cold joint exists between the slab and foundation wall or footing beneath, unless provisions are made to transfer the load.
    - Not for use in slabs poured over foundation walls formed of concrete block or with brick and 4" masonry block stemwalls.
  • MASB:
    - Fill CMU cell with concrete grout first, then place MASB into the grouted cell and adjust into position. Attach mudsill to anchor only after the concrete grout cures.
    - CMU shall have a minimum f'm = 1,500 psi.
    - The MASB Mudsill Anchors were tested in standard 8" CMU.

Related Literature

Product Information Tables

Prescriptive Anchor Spacing

    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. "Prescriptive" denotes designs per the IRC or conventional provisions of the IBC for wind speeds 100 mph or less, or for Seismic Design Category D and less (SDC E and less in IBC).
  2. Spacing is based on parallel to plate load direction only.
  3. Place anchors not more than 12" from the end of sill and splices per code.
  4. CMU shall have a minimum f'm = 1,500 psi and concrete shall have a minimum f'c = 2500 psi.
  5. Spacings apply to DF, SP, and HF sill plates.

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 have been increased for short-term loading.
  2. For uplift loads, provide attachment from mudsill to building's structural components to prevent cross-grain bending.
  3. LMAZ installed attached to the stud has no load reduction for parallel and perpendicular loads and an uplift of 600 lbs. for LMA4 and 835 lbs. for LMA6.
  4. For concrete stemwall applications, allowable loads are based on a minimum concrete stemwall width of 6".
  5. Uplift loads do not apply to MAB installed on 2x8, 2x10, 2x12 sill plates.
  6. Nails: 10d x 1 1/2" = 0.148" dia. x 1 1/2" long. See other nail sizes and information.

Code Reports

Part IAPMO UES ER ICC-ES ESR City of Los Angeles State of Florida
LMA4 No code listing. Please contact us for test data.
LMA4ZNo code listing: Please contact us for test data.
LMA6 No code listing. Please contact us for test data.
LMA6ZNo code listing: Please contact us for test data.
MABSee specific model numbers for code listings.
MAB15 ER-417
MAB15Z ER-417
MAB23 ER-417
MAB23Z ER-417
MABZ No code listing. Please contact us for test data.
MASB ER-417

Drawings

Part Orthographic Perspective
LMA4
LMA4
DWGDXF
LMA4 front view
DWG DXF
LMA4 left view
DWG DXF
LMA4 right view
DWG DXF
LMA4
DWG DXF
LMA4ZNone
High Wind-Resistant Construction D54: Sill Plate to Foundation
DWG DXF
LMA6
LMA6
DWGDXF
LMA6 front view
DWG DXF
LMA6 left view
DWG DXF
LMA6 right view
DWG DXF
None
LMA6ZNone None
MABNone None
MAB15
MAB15
DWGDXF
MAB15 front view
DWG DXF
MAB15 left view
DWG DXF
MAB15 right view
DWG DXF
MAB15 top view
DWG DXF
High Wind-Resistant Construction D53: Sill Plate to Foundation
DWG DXF
MAB15
DWG DXF
MAB15ZNone None
MAB23
MAB23
DWGDXF
MAB23 front view
DWG DXF
MAB23 left view
DWG DXF
MAB23 right view
DWG DXF
MAB23 top view
DWG DXF
High Wind-Resistant Construction D53: Sill Plate to Foundation
DWG DXF
MAB23
DWG DXF
MAB23ZNone None
MABZNone None
MASB
MASB
DWGDXF
MASB front view
DWG DXF
MASB left view
DWG DXF
MASB right view
DWG DXF
MASB top view
DWG DXF
MASB
DWG DXF
MASB Rim Joist Installation
DWG DXF