Post-Installed Anchors in Masonry US English

Shear Utilization Percentage

V ua

( 250 lbs ) = = 7.79 % ϕ steel

V sa

( 0.65 ) ( 4,938 lbs )

V ua

( 1000 lbs ) ϕ masonry

V mbg

( 0.70 )( 2,302 lbs )

= 62.06 %

V ua

( 1000 lbs ) = = 7.73 % ϕ masonry

V mpg

( 0.70 )( 19,470 lbs )

V ua

( 250 lbs ) ϕ crushing

V mc

( 0.50 )( 6,684 lbs )

TENSION AND SHEAR INTERACTION

Tri-Linear Equation

Parabolic Equation

= 7.48 %

N ua	+	V ua	≤ 1 . 2
ϕN n		ϕV n

1,000 lbs	+	1,000 Ibs
6,328 lbs		1,611 lbs

N ua

5 / 3 ϕN n

0.78 ≤ 1.2

V ua

5 / 3 ϕV n

≤ 1.2

1,000 lbs	5 / 3	+	1,000 Ibs	5 / 3 ≤ 1.2
6,328 lbs			1,611 lbs

0.50 ≤ 1.0

6.0 PROFIS ENGINEERING TIPS

Hilti ’ s PROFIS Engineering Suite software is a user-friendly , cloud-based application that helps make designing postinstalled anchor connections easier . Anchor design in masonry base materials has been available in the software for the past few years . The software has been updated with the new design provisions from ICC-ES AC01 and AC58 to help users transition to these new industry standards . With that in mind , this guide will provide tips and tricks for modeling certain masonry conditions within the software . The following PROFIS models are intended for illustration purposes only .

For CMU construction , the software defaults to assuming closed-ended units with hollow head joints . For designing with open-ended units with solid head joints , there is an option available to select that will allow the software to analyze the head joint as completely filled with grout or mortar . The option is located in the geometry parameters in the base material design tab . Choosing this option will toggle the influence of hollow head joints on CMU design as discussed in Section 4.0 .

When selecting “ Grout-filled CMU ” as a base material , the software defaults to assuming fully grouted CMU construction . For designing anchors located in the grouted cells of a partially grouted CMU construction , there is an indirect method to influence the software to analyze partially grouted CMU construction . For designing anchors located in the ungrouted cells or when the location of the grouted cells is unknown , select “ Hollow CMU ” as the base material .

For partially grouted CMU construction with the grouted cells filled and reinforced vertically ( i . e ., grouted cells on different courses ), reduce the edge distances in the x-direction to the appropriate nearest adjacent hollow head joint as well as either the nearest ungrouted cell ( for single anchor configurations ) or the opposite nearest adjacent head joint ( for multi-anchor configurations installed in different vertically adjacent CMU blocks ). See Figure 6 and 7 . The software will analyze the influence areas accordingly if the correct application edge distances in the y-direction are modeled in the software .

Post-Installed Anchors in Masonry US English | Page 14

6.0 PROFIS ENGINEERING TIPS