Ramset AnkaScrew Xtrem Screw In Anchors Instruction Manual

SPECIFIERS ANCHORING RESOURCE BOOK
AnkaScrew ™ Xtrem ™
SCREW IN ANCHORS – NON-CRACKED & CRACKED CONCRETE

GENERAL INFORMATION

Product

A seismic certified heavy duty screw-in anchor for permanent anchoring into concrete. Certified for seismic C1 & C2 applications.

Compliance

European Technical Assessment (option1) – ETA-20/0731 Design According to:

• Stud diameter equals hole diameter.
• AS5216 (formerly TS101)
• AS1170.4 – Earthquake Actions
• EN1992-4 (formerly ETAG001 Annex C, E & TR045
• NZS3101 (A3) Section 17 – Seismic Design C1 & C2

Use Ramset TM iExpert Anchor Software for optimised calculation or where a greater range of anchor layout detail is needed

Benefits, Advantages and Features

Fire tested to TR020

• Fire rated performance up to 120 minutes
• Highest level of European assessment for mechanical screw-in anchors
• Approved for all directions (floor, wall, overhead)
• Maximum Tensile & Shear capacities in cracked concrete
• Zinc Plating 5µm
• Anchor diameters 6mm to 12mm

Fast and easy to use:

• Install, simply screws into hole.
• Remove, leaving an empty hole.

Close to edge and for close anchor spacing:

• Does not expand and burst concrete.

Installation

1. Drill hole to correct diameter and depth. Important: Use Ramset™ Dustless Drilling System to ensure holes are clean. Alternatively, clean clean thoroughly with brush and remove debris by way of vacuum or hand pump, compressed air etc.
2. Using a socket wrench, screw the AnkaScrew ™ Xtrem ™ into the hole using slight pressure until the self tapping action starts.
3. Tighten the AnkaScrew ™ Xtrem ™ until flush with fixture.
   If resistance is experienced when tightening, unscrew anchor one turn and re- tighten. Ensure not to over tighten. Refer to tightening torque for limitations.

Principal Applications

• Anchoring into cracked & non cracked concrete
• Steel framing
• Mechanical services
• Pallet racking
• Safety barriers
• Conveyors
• Hand rails
• Bottom plates

Installation and performance details

Data is based on optimal dimensions, anchor spacing = 3h, edge distance = 1.5h
For shear loads acting towards an edge or where optimum dimensions are not achievable, please use the simplified strength limit state design process to verify capacity
** Reduced characteristic ultimate tensile capacity = ϕNur where ϕ = 0.67 and Nur is based on characteristic ultimate pull-out tensile capacity for sizes 6-10 and concrete tensile capacity for size 12 where h≥67.
For conversion to Working Load Limit MULTIPLY ϕNuc x 0.50
For Cracked Concrete performance, please use the simplified strength limit state design process to verify capacity.
***Note: For performance based on smaller concrete substrate thickness, refer to iExpert Anchor Software or Ramset™ Engineer.

DESCRIPTION AND PART NUMBERS

Anchor size, dh (mm)| Drilled hole diameter, dh
(mm)| Effective Length , Le (mm)| Maximum Fixture Thickness,
tfix,max (mm)| AnkaScrew” Xtrem’ Description| Part Number
---|---|---|---|---|---
6| 6| 41| 10| 6mmx5Omm zinc| AS06050X
71| 40| 6mmx8Omm zinc| AS06080X
8| 8| 50| 15| 8mmx6Omm zinc| AS08060X
67| 32| 8mmx8Omm zinc| AS08080X
10| 10| 48| 5| lOmmx6Omm zinc| AS10060X
88| 45| lOmmx100mm zinc| AS10100X
12| 12| 65| 15| 12mmx8Omm zinc| AS12080X
95| 45| l2mmxllOmm zinc| AS12110X
135| 85| 12mmx150mm zinc| AS12150X

Effective depth, h (mm)
h = Le – t
t = total thickness of material(s) being fixed

ENGINEERING PROPERTIES

Anchor size, db (mm)| Minimum cross sectional diameter (mm)| Stress area, As (mm 2 )| Yield strength, fy (MPa)| UTS, Fu (Mpa)
---|---|---|---|---
6| 5.1| 20.4| 560| 700
8| 7. 1| 39.6| 560| 700
10| 9.1| 65| 560| 700
12| 11.1| 96.8| 560| 700

STEP 1 Select anchor to be evaluated

Table 1a Indicative combined loading – interaction diagram
Table 1b Absolute minimum edge distance and anchor spacing values, e and a (mm)

Notes:

• Shear Limited Seismic Anchor Screw steel capacity
•  Tension limited by pull-out capacity
• No edge or spacing effects
• f’c = 32 MPa

* Note : For calculations based on smaller member thickness, refer to iExpert Anchor Software or Ramset™ Engineer.

Step 1c Calculate anchor effective depth, h (mm)
Refer to “Description and Part Numbers” table on the previous page.

Effective depth, h (mm)
h = Le – t
t = total thickness of material(s) being fixed

Checkpoint 1 Anchor size determined, absolute minima compliance achieved, effective depth (h) calculated.
STEP 2 Verify Non-cracked & cracked concrete tensile resistance – per anchor
Table 2a – Reduced characteristic ultimate concrete tensile capacity, ϕNuc (kN), ϕc = 1/1.5 = 0.67, f’c = 32 MPa

For optimised performance data, please use Ramset iExpert Anchoring Software.
Table 2a-2-Cracked Concrete effect, tension, Xncr

Table 2b – Concrete compressive strength effect, tension, Xnc and Pull-out, Xnpc

Table 2c – Concrete Edge distance effect, tension, Xne

Xne = 0.25 + 0.5(e/h)
Where em ≤ e ≤ ec
ec = 1.5h
Note: Tabled values are based on the nominal effective depth, h shown in the installation details. For other values of Xne, please use equation shown above.

Table 2d – Concrete anchor spacing effect, tension, Xna

Xna = 0.5 + a/(6h)
Where am ≤ a ≤ ac ac = 3h
Note : Tabled values are based on the nominal effective depth, h shown in the installation details. For other values Xna, please use equation shown above.

2 Checkpoint
Design reduced ultimate cracked concrete tensile capacity ϕNurc ϕNurc = ϕNuc Xncr Xnc Xne Xna

STEP 3 Verify Non-cracked & cracked concrete tensile resistance – per anchor
Table 3a Reduced characteristic ultimate steel tensile capacity, ϕNus, (kN) where ϕn =(1 /1.5)= 0.67

Table 3b-1 – Reduced characteristic ultimate pull-out capacity, ϕNup (kN) ϕp = 0.67, f’c = 32 MPa

Table 3b-2 Cracked Concrete effect, pull-out, X

*Governed by cracked concrete tensile capacity
For Non-Cracked concrete Xpcr = 1

Checkpoint 3a Design reduced ultimate pull-out capacity, ϕNurp ϕNurp = ϕNup Xpcr Xnpc

Checkpoint 3b

Design reduced ultimate tensile capacity, ϕNur
ϕNur = minimum of ϕNurc, ϕNurp, ϕNus
Check N*/ΦNur ≤ 1,
if not satisfied return to step 1

STEP 4 Verify cracked concrete edge shear resistance – per anchor

Table 4a Reduced characteristic ultimate concrete edge shear capacity, ϕVuc (kN),ϕ = 1/1.5 = 0.67, f’c = 32 MPa

40
50| 3.| 4.| 3.6
4.9| 3.7
5.0| 3.9
5.2
Anchor size, db| 10| 12
---|---|---
Effective Depth, h (mm)| 43| 60| 68| 50| 67| 80
Edge distance, em|
50
70| 5.| 6.| 6.| 5.5
8.6| 5.9
9.1| 6.1
9.4

For optimised performance data, please use Ramset iExpert Anchoring Software.
Table 4a-2 Cracked Concrete effect, shear, Xvcr

Table 4b Concrete compressive strength effect, concrete edge shear, Xvc

Table 4c – Concrete load direction effect, concrete edge shear, Xvd

Load direction effect, conc. edge shear, X

Table 4d – Anchor spacing and edge distance effect, concrete edge shear, Xve For single anchor fastening X

For 2 anchors fastening Xve

For 3 anchors fastening and more Xve

Table 4e Reduced characteristic ultimate concrete pryout capacity, ϕVucp (kN), ϕ = 1/1.5 = 0.67, f’c = 32 MPa

Table 4f Anchor at a corner effect, concrete edge shear, Xvs
Note: For e1/e2 > 1.25, Xvs = 1.0

4a Checkpoint
Design reduced ultimate concrete edge shear capacity, ϕVurc ϕVurc = ϕVuc Xvcr Xvc Xvd Xve *Xvs

4b Checkpoint
Design reduced ultimate concrete pryout capacity, ϕVurcp ϕVurcp = ϕVucp Xncr Xnc Xne Xna
Verify cracked concrete shear resistance – per anchor
Table 5a Reduced characteristic ultimate steel shear capacity, ϕV, (kN) where ϕ = 0.8

5 Checkpoint
Design reduced ultimate tensile capacity, ϕVur
ϕVur = minimum of ϕVurc, ϕVurcp, ϕVus
Check V*/ϕVur ≤ 1,
if not satisfied return to step 1

Combined Loading

6 Checkpoint
Check
N/ϕNur + V/ϕVur ≤ 1.2,
if not satisfied return to step 1

Specify Ramset ™ AnkaScrew ™ Xtrem ™ Anchor, (Anchor Size) (Part Number) Maximum fixed thickness to be (t) mm.
Example Ramset ™ AnkaScrew ™ Xtrem ™ Anchor, 12mm AS12110X. Maximum fixed thickness to be 20mm. To be installed in accordance to Ramset™ Installation Instructions.
Use Ramset ™ iExpert Anchor Software for optimised calculation or where a greater range of anchor layout detail is needed.

www.ramset.com.au – 1300 780 063
www.ramset.co.nz – 0800 RAMSET

References

• Ramset - Products that make building easier
• Ramset - Products that make building easier

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