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I Spy:Masonry Observations and InspectionsPART 1 OF A MASONRY AFTERNOON, FEBRUARY 26, 20192019 STRUCTURAL ENGINEERING SEMINAR SERIESPAM JERGENSON, CCS, CCCA, BECXP, CXA+BELOUIS LONGMIRE, STRUCTURAL MASONRY SPECIAL INSPECTOR

I Spy:Masonry Observations and Inspections

Inhabitat.com

Presentation Outline

Background on masonry code and special inspections Baseline masonry observations of new construction Baseline masonry observations of existing construction Red flags in existing construction observation Special Inspections of masonry

Current Masonry Code

2015 MN

2012 IBC

2011 MSJC

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2015 MN Building Code

http://www.dli.mn.gov/business/codes-and-laws

2012 IBC

https://shop.iccsafe.org/codes/2012-international-codes/2012-international-building-code-1.html

2011 MSJC

Adopted by:2012 IBC and 2015 MN Bldg. Code

“Building Code Requirements and Specification for Masonry Structures” contains two standards:

• TMS 402-11/ACI 530-11/ASCE 5-11 (2011 MSJC Code)

• TMS 602-11/ACI 530.1-11/ASCE 6-11 (2011 MSJC Specification)

The Masonry Society (TMS)http://www.masonrysociety.org/

Masonry Standards Joint Committee (MSJC)

Resource - Masonry Code

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2015 MN Building CodeChapter 14 - Exterior Walls

1403.2 Weather protection. Exterior walls shall … include flashing, … and constructed … to prevent the accumulation of water … by providing a water-resistive barrier behind the exterior veneer, … and a means for draining water … Protection against condensation …

Flashing material verification

Installation Installation

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Installation

Installation

Installation

2015 MN Building Code

Chapter 14 - Exterior Walls

Other masonry code:• 1405.6 Anchored masonry veneer. Anchored masonry

veneer shall comply with the provisions of Sections 1405.6, 1405.7, 1405.8 and 1405.9 and Sections 6.1 and 6.2 of TMS 402/ACI 530/ASCE 5. (2011 MSJC Code)

• 1405.7 Stone veneer. (≤ 10 inches thick)• 1405.8 Slab-type veneer. (≤ 2 inches thick)• 1405.9 Terra Cotta.• 1405.10 Adhered masonry veneer.

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1404.4 Masonry. Exterior walls of masonry construction shall be designed and constructed in accordance with this section and Chapter 21. Masonry units, mortar and metal accessories used in anchored and adhered veneer shall meet the physical requirements of Chapter 21. The backing of anchored and adhered veneer shall be of concrete, masonry, steel framing or wood framing.

2015 MN Building CodeChapter 14 - Exterior Walls

2015 MN Building Code

Chapter 21 – Masonry

Other design methods: Allowable stress design Strength design Prestressed masonry Empirical design Glass unit masonry Direct design

From 2101.2 Design methods. 2101.2.6 Masonry veneer. Masonry

veneer shall comply with the provisions of Chapter 14 or Chapter 6 (Veneer) of TMS 402/ACI 530/ASCE 5.(2011 MSJC Code)

2103 Materials, 2104 Construction, and 2105 Quality Assurance sections refer to:

ASTM Standards TMS 602-11/ACI 530.1-11/ASCE 6-11

(2011 MSJC Specifications)

2015 MN Building Code

Chapter 21 – Masonry 2104.4.1 Tolerances 2011 MSJC Specification 3.3.F

Bed and head joints: 3/8 in., unless otherwise required

Mortar joint -thicknesses• Bed: +1/8 in.• Head: -1/4 in.,

+3/8 in.

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2104.4.1 Tolerances 2011 MSJC Specification 3.3.F

Bed and head joints: 3/8 in., unless otherwise required

Mortar joint -thicknesses• Bed: +1/8 in.• Head: -1/4 in.,

+3/8 in.

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The Three Masonry Rs: Repair, Restoration, and RehabilitationPART 2 OF “A MASONRY AFTERNOON”, FEBRUARY 26, 20192019 STRUCTURAL ENGINEERING SEMINAR SERIESPAMELA JERGENSON, CCS, CCCA, BECXP, CXA+BE; ANDPHILIP WAUGH, ASSOC. AIA, LEED AP

The Three Masonry Rs:Repair, Restoration, and Rehabilitation

Lego ultimate building set

Bricksandbloks.com

The Three Masonry Rs:Repair, Restoration, and Rehabilitation Presentation Outline

Review of modern-day solid and cavity masonry wall construction Identifying existing masonry deterioration and deficiencies Detailing existing masonry repair Specifying masonry repair materials Historic masonry Secretary of the Interiors Standards Evolution of masonry wall assemblies

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Solid composite masonry wall Solid composite masonry wall

Solid composite masonry wall Cavity masonry wall

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Cavity masonry wall - CMU Cavity masonry wall – steel stud

Deteriorated joint sealant

Compressed joint sealant

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Joint sealant replacement

Cracked brick and mortar

Weathered or missing mortar Poor tuck pointing

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Rowlock sill and spalled brick

Tuck pointing detail

Mortar specifications - selection

ASTM C270-14A,Appendix X3 Tuck Pointing Mortar

Mortar specifications - proportion

ASTM C270-14A, Table 2

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Mortar specifications - preblended

ASTM C1714/C1714M - 19

Leaking window

Leaking window

Leaking window

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Through-wall flashing detail Exfoliated

lintel

Poor through-wall termination

Out-of-plane parapet

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Out-of-plane parapet

Out-of-plane parapet repair detail

Deteriorated chimney Chimney shortening and repair

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Deteriorated chimney interior

Efflorescence

Efflorescence, cracked brick, and spalled stone

Efflorescence on a Pool

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