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Break-Away Firewall Anchors
 
   
Several building codes now require masonry walls to be secured, but to break-away in the event of a fire. To accomplish this we offer our non-wire anchors to be manufactured from Rolled Strip Zinc Alloys. The physical and mechanical properties are listed below. These anchors will melt at temperatures over 800 degrees Fahrenheit. The Rolled Strip Zinc Alloy is available in 1/8" or 16 gage.
   
Below are some of the anchors that have been manufactured in Rolled Strip Zinc Alloy material.

Firewall anchors melt at 792 degrees and cannot be welded to steel. For conditions requiring welding, we suggest welding the #130 Weld-0n Channel Slot in plain steel or hotdip to the steel, and then use a channel slot anchor manufactured from the Zinc Alloy 710 material.
   

134 Corrugated Channel Slot Anchor

187 Corrugated Brick Veneer Anchor with Hole

189 L-Type Column Anchors

196 Corrugated Type Column Anchor

274 Screw-On Split-Bend Stone Anchor

341-B L-Anchor with Hole and Slot
   
Chart below lists the physical and mechanical properties of the zinc strips and comparisons to other metals
   
 

Rolled Strip Zinc Alloy

710


Brass

70/30


Copper

ETP

Stainless
Steel

304


D Q Steel

1008


Aluminum

3003

Physical Properties

Density (lbs/in³)

Melting Point (°F)

Coefficient of Thermal Expansion (micro inch/in/° F)

Electrical Conductivity (%IACS)

Thermal Conductivity (BTU/(hr)(ft²)(ft)(°F)

Specific Heat (68°F) BTU/lb/°F

Specific Gravity

Mechanical Properties

Tensile Strength (ksi)

% Elongation (in²")

Olsen Ductility (in.)

Hardness R(15T)

Shear Strength (ksi)

-

.0259

792

15.4



27


60.5

 
0.096

 
7.18

-

21-30

30-45

25-35

55-68

24-28

-

0.306

1660

  11.3


 
27

 
67.7


0.090

 
8.47

-

48-80

8-65

.10-.40

60-91

31-48

-

0.321

1949

9.3



101


195.9


0.092


8.89

-

32-57

6-45

10-40

50-80

22-29

-

0.29

2550

9.6



3.0


9.4


0.12


7.9

-

50-90

0-40

10-30

0-86

60-120

-

0.29

2730

6.4



14.5


37


0.115


7.9

-

38-50

35-45

35-42

73-77

45-52

-

0.099

1190

12.9



42


94.1


0.213


2.74

-

16-29

4-30

15-35

40-75

10-16
 
   
   
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