All Weather Masonry Construction

2

International Building Code 2006

Chapter 21: Masonry

Section 2104 – Construction

3

ACI 530.1/ASCE 6/TMS 602

IBC 2104.1MASONRY CONSTRUCTION

4

Hot and Cold Weather Masonry Construction

Hot and Cold Weather Masonry Construction

5

MSJC 530.1 – 1.8 CCOLD WEATHER CONSTRUCTION

• Ambient temperature below 40°F

6

MSJC 530.1 – 1.8 CCOLD WEATHER CONSTRUCTION

• Ambient temperature is the outdoor temperature at the time considered.

7

MSJC 530.1 – 1.8 CCOLD WEATHER CONSTRUCTION

Ambient Temperature

CONSTRUCTION • 40°F – 32°F• 32°F – 25°F• 25°F – 20°F• 20°F and below

PROTECTION• 40°F – 25°F• 25°F – 20°F• 20°F and below

8

• Do not lay glass units

MSJC 530.1 – 1.8 C.1COLD WEATHER CONSTRUCTION

9

• Units not less than 20°F

• Units shall not contain frozen moisture

• No visible ice or snow on surface

MSJC 530.1 – 1.8 C.2.aPREPARATION

10

MSJC 530.1 – 1.8 C.2.bPREPARATION

• Remove visible ice or snow from surface to receive new construction

• Heat surfaces to above freezing

11

MSJC 530.1 – 1.8 C.3CONSTRUCTION

• Work in progress

• Based on ambient air temperature

• Water and aggregates not to exceed 140°F for mortar and grout

12

MSJC 530.1 – 1.8 C.3.aCONSTRUCTION

Temperatures 40°F – 32°F(based on ambient temperature)

• Mortar temperature 40°F – 120°F at time of mixing

13

MSJC 530.1 – 1.8 C.3.aCONSTRUCTION

Temperatures 40°F – 32°F(based on ambient temperature)

• Heat water and aggregates for grout when < 32°F

14

MSJC 530.1 – 1.8 C.3.bCONSTRUCTION

Temperatures 32°F – 25°F(based on ambient temperature)

• Mortar temperature 40°F – 120°F at time of mixing

• Maintain mortar temperature above freezing until used

15

MSJC 530.1 – 1.8 C.3.bCONSTRUCTION

Temperatures 32°F – 25°F(based on ambient temperature)

• Heat water and aggregates so that grout temperature 70°F – 120°F at time of mixing

16

MSJC 530.1 – 1.8 C.3.bCONSTRUCTION

Temperatures 32°F – 25°F(based on ambient temperature)

• Maintain grout temperature > 70°F until placement

17

MSJC 530.1 – 1.8 C.3.bCONSTRUCTION

Temperatures 32°F – 25°F(based on ambient temperature)

• Heat AAC units to a minimum 40°F before installation

18

MSJC 530.1 – 1.8 C.3.cCONSTRUCTION

Temperatures 25°F – 20°F(based on ambient temperature)

• Article 1.8 C.3.b

• Heat masonry surfaces to 40°F

• Heat masonry to minimum 40°F prior to grouting

19

MSJC 530.1 – 1.8 C.3.cCONSTRUCTION

Temperatures 25°F – 20°F(based on ambient temperature)

• Wind breaks or enclosures when wind velocity > 15 mph

20

MSJC 530.1 – 1.8 C.3.cCONSTRUCTION

Temperatures below 20°F(based on ambient temperature)

• Article 1.8 C.3.c

• Maintain air temperature > 32°F using enclosures and auxiliary heat

21

MSJC 530.1 – 1.8 C.4PROTECTION

• Apply after masonry is placed

• Based on anticipated minimum daily temperature for grouted masonry

• Based on anticipated mean daily temperature for ungrouted masonry

22

MSJC 530.1 – 1.8 C.4.aPROTECTION

• Maintain glass masonry > 40°F for 48 hours after construction

23

MSJC 530.1 – 1.8 C.4.bPROTECTION

• Maintain AAC masonry > 32°F for 4 hours after thin-bed application

24

MSJC 530.1 – 1.8 C.4.cPROTECTION

Temperatures 40°F – 25°F

• Weather-resistive membrane for 24 hours

25

MSJC 530.1 – 1.8 C.4.dPROTECTION

Temperatures 25°F – 20°F

• Completely cover with weather-resistive insulating blankets or equal for 24 hours

• 48 hours for grouted masonry, unless Type III portland cement

26

MSJC 530.1 – 1.8 C.4.ePROTECTION

Temperatures 20°F and below

• Maintain above 32°F for 24 hours using heated enclosures, electric heating blankets, infrared lamps or other acceptable method

• 48 hours for grouted masonry, unless Type III portland cement

27

MSJC 530.1 – 1.8 DHOT WEATHER CONSTRUCTION

28

MSJC 530.1 – 1.8 D.1.aPREPARATION

Ambient temperature > 100°F or > 90°F w/wind > 8 mph

• Mortar temperature < 120°F

• Loose, damp sand

29

MSJC 530.1 – 1.8 D.1.bPREPARATION

Ambient temperature > 115°F or > 105°F w/wind > 8 mph

• Article 1.8 D.1.a

• Shade materials and mixing equipment

30

MSJC 530.1 – 1.8 D.2.aCONSTRUCTION

Ambient temperature > 100°For > 90°F w/wind > 8 mph

• Mortar and grout < 120°F

• Mixers, transport containers and mortar boards shall be flushed with cool water

• Spread no more than 4 ft of mortar ahead for AAC units

• Set AAC units within one minute

31

MSJC 530.1 – 1.8 D.2.aCONSTRUCTION

Ambient temperature > 100°For > 90°F w/wind > 8 mph

• Retemper with cool water

• Use mortar within 2 hours

32

MSJC 530.1 – 1.8 D.2.bCONSTRUCTION

Ambient temperature > 115°F or > 105°F w/wind > 8 mph

• Article 1.8 D.2.b

• Use cool mixing water

• No ice in mixing water when added to other materials

33

MSJC 530.1 – 1.8 D.3PROTECTION

Ambient temperature > 100°For > 90°F w/wind > 8 mph

• Fog spray new construction until damp three times a day for three days