MSP-PR - Hilti MSP-PR page 2 Technical ... VDI 2230 Blatt 1:2003-02 ... well as an additional shear resistance from the normal component of additional pressure from actions.

MSP-PR Pitched roofTechnical data

MSP-PR MSP-PR

page 2 Technical data MSP-PR pitched roof Technical data MSP-PR pitched roof page 3

1. Basic dimensions and material of components

Spacer plateMSP-PR-SP 10mm

Carrier SectionMSP-PR-CH 6.3mMSP-PR-CH 6mMSP-PR-CH 3.3m

Base plateMSP-PR-BP 39mmMSP-PR-BP 45mm

SleeveMSP-PR-SL

Wood screwMSP-HS 8x100mm A2MSP-HS 8x120mm A2MSP-HS 8x140mm A2MSP-HS 8x160mm A2

Cross connectorMSP-PR-CC

Roof hookMSP-PR-RHF

Roof hookMSP-PR-RHC

Middle ClampMSP-PR-MC 30-50mm

Roof hookMSP-PR-RHA

End ClampMSP-PR-EC 30-50mm

PA66 GF30 EN AW-6063 T66 - EN 755-2

EN AW-6063 T66 – EN 755-2

ChannelEN AW-6063 T66 - EN 755-2

SpringX2CrNiMo17-12-2 (1.4404) - EN 10088-2A2 stainless steel

ClampEN AW-6063 T66 - EN 755-2

ScrewA2-70 - ISO 3506-1

Screw and Nut Clamp (1)EN AW-6060 T66 - EN 755-2

All other Al partsEN AW-6063 T66 - EN 755-2

Screws A2-70 - ISO 3506-1

Nuts A4-70 - ISO 3506-2




Nuts A4-70 - ISO 3506-2


ScrewA2-70 - ISO 3506-1

Secure WasherPE-HD




Nuts A4-70 - ISO 3506-2


ScrewA2-70 - ISO 3506-1

Secure WasherPE-HD

NutA4-70 - ISO 3506-2

Description DescriptionMaterial composition Material compositionDimensioning* Dimensioning*

* Dimensions rounded to full mm. * Dimensions rounded to full mm.

MSP-PR MSP-PR


2. Design resistances of components (ultimate limit states) 2.1 MSP-PR-SP spacer plate, MSP-PR-BP base plate and MSP-HS wood screw

For the resistance verification of MSP-PR pitched roof applications the following component resistances have to be considered individually:

The design resistances stated in Table 1 and Table 2 are valid for MSP-PR-RHF/RHA/RHC roof hook fastened with all different variants of MSP-PR-SP spacer plate, MSP-PR-BP base plate and MSP-HS wood screw, see caption 1. All stated resistances are combined from the individual resistances of the components and transferred to the connection between MSP-PR-RHF/RHA/RHC roof hook and MSP-PR-CH carrier section, resistance coordinates see Figure 1. The resistances are calculated assuming a fixed connection between the MSP-PR-RHF/RHA/RHC roof hook and the MSP-PR-CS carrier section. The resistances with interaction of pressure and shear with resulting angles between 0 and 90° are stated in Table 1. Intermediate resistances can be obtained with linear interpolation. Resistances in pure suction are stated in Table 2.

The structural timber used has to apply to EN 338:2009-10 or DIN EN 14081-1:2011-05 with a strength class of C24 to C40 and a minimum required density ρ of 350 kg/m3. The applied modification factor kmod is 0.8 with the load-duration class middle and the service class of 2.

All resistances are calculated according to the following codes and guidelines:▪ DIN EN 1990:2010-12 (EC1)▪ EN 1999-1-1:2007-05+A1:2009-07 (EC9)▪ VDI 2230 Blatt 1:2003-02 (VDI2230)▪ DIN EN 1995-1-1:2012-12 (EC5)

The resistances are valid as long as the full Hilti MSP-PR system is used and the installation is built according to the MSP-PR pitched roof operating instructions and the MSP-PR pitched roof instructions for use.

Fig.1: Roof hook and roof hook assembly resistance coordinates

▪ Resistance of the roof structure according to relevant codes ▪ By the customer

▪ MSP-PR-SP spacer plate, MSP-PR-BP base plate and MSP-HS wood screw, see 2.1▪ MSP-PR-RHF/RHA/RHC roof hook, see 2.2 ▪ MSP-PR-RHF/RHA/RHC roof hook clamp, see 2.3▪ MSP-PR-CH carrier section, see 2.4 ▪ MSP-PR-CC cross connector, see 2.5▪ MSP-PR-MC/EC middle/end clamp, see 2.6

▪ By Hilti Technical Data Sheet

Table 1: MSP-PR-SP, MSP-PR-BP and MSP-HS design resistances with interaction of pressure and shear

Roof angle [α in °] 0 10 20 30 40 50 60 70 80 90

Pressure design resistance [NRd in kN] 2.43 2.24 2.06 1.88 1.61 1.28 0.95 0.63 0.31 0.00

Shear design resistance [VRd in kN] 0.00 0.39 0.75 1.08 1.35 1.53 1.65 1.72 1.73 1.73

Table 2: MSP-PR-SP, MSP-PR-BP and MSP-HS design resistances with suction

Roof angle [α in °] 0

Pressure design resistance [NRd in kN] -1.66

Shear design resistance [VRd in kN] 0.00

α

max. 35mm

NRd

VRd

The component with lowest resistance limits the application.

MSP-PR MSP-PR


2.2 MSP-PR-RHF/RHA/RHC roof hook

Design resistances of MSP-PR-RHF/RHA/RHC roof hook with interaction of pressure and shear with resulting angles between 0 and 90° are stated in Table 3 and Table 4. Intermediate resistances can be obtained with linear interpolation. Resistances in pure suction are stated in Table 5. The design resistances are calculated assuming a fixed connection between the MSP-PR-RHF/RHA/RHC roof hook and the MSP-PR-CH carrier section. The design resistances are calculated with a plasticity factor of 1.47.For utilization calculation under alternating load directions, like pressure and suction, the following equations have to be fulfilled individually:

1. PEd ≤ NRd (Pressure)

2. |SEd| ≤ |NRd (Suction)|

3. |SEd| + PEd ≤ 1.47|NRd (Suction)| + NRd (Pressure)

PEd is the pressure design action and SEd is the suction design action of the governing load combinations.

Table 3: MSP-PR-RHF design resistances with interaction of pressure and shear

Roof angle [α in °] 0 10 20 30 40 50 60 70 80 90


Shear design resistance [VRd in kN] 0.00 0.37 0.69 1.01 1.33 1.67 2.07 2.39 2.60 2.87Table 6: MSP-PR-RHF/RHA/RHC roof hook clamp design resistance with shear

Roof angle [α in °] 0 10 20 30 40 50 60 70 80 90

Shear design resistance [VRd in kN] ∞ 11.3 3.4 2.3 2.0 1.8 1.7 1.6 1.6 1.5Table 4: MSP-PR-RHA and MSP-PR-RHC design resistances with interaction of pressure and shear

Roof angle [α in °] 0 10 20 30 40 50 60 70 80 90


Shear design resistance [VRd in kN] 0.00 0.35 0.63 0.87 1.10 1.32 1.56 1.82 2.12 2.52

Table 5: MSP-PR-RHF/RHA/RHC design resistances with suction

Roof angle [α in °] 0 - 90°

Suction design resistance [NRd in kN] -2.28

2.3 MSP-PR-RHF/RHA/RHC roof hook clamp

The design resistances of the MSP-PR-RHF/RHA/RHC roof hook clamp, see Figure 2, are stated in Table 6. These values include the design resistance from pre-stress of the screw as well as an additional shear resistance from the normal component of additional pressure from actions.

Fig.2: MSP-PR-RHF/RHA/RHC roof hook clamp resistance coordinates

VRd

MSP-PR MSP-PR


2.4 MSP-PR-CH carrier section

2.4.1 Sectional data

2.4.2 Interface resistances

Design resistances for the MSP-PR-CH carrier section are separated in sectional data, see 2.4.1, and interface resistances, see 2.4.2

The sectional data of the MSP-PR-CH Carrier section is stated in Table 7.

The design resistance of the MSP-PR-CH top interface is stated in Table 8. The design resistance of the MSP-PR-CH bottom interface is stated in Table 9.

Table 7: MSP-PR-CH sectional data

Profile Symbol Unit

Material - - EN AW-6063 T66 - EN 755-2

Yield strength Rp0.2 MPa 200

E-Module E MPa 70000

Weight per meter g Kg/m 0.77

Wall thickness d mm ≤ 10

Cross sectional area A mm2 286

Max. dimension az mm 38.0

Max. dimension ay mm 32.4

Distance to CG ez1 mm 19.3

Distance to CG ez2 mm 18.7

Distance to CG ey1 mm 16.2

Distance to CG ey2 mm 16.2

Section values y-axis

Moment of inertia Iy cm4 5.23

Section modulus Wy1 cm3 2.79

Section modulus Wy2 cm3 2.71

Section values z-axis

Moment of inertia Iz cm4 2.81

Section modulus Wz1 cm3 1.74

Section modulus Wz2 cm3 1.74

Table 8: MSP-PR-CH top interface design resistance

Suction design resistance [NRd in kN] -4.35

Table 9: MSP-PR-CH bottom interface design resistance

Suction design resistance [NRd in kN] 5.88

Fig.3: MSP-PR-CH resistance coordinates, top interface

Fig.4: MSP-PR-CH resistance coordinates, bottom interface

-NRd2 -NRd

2

NRd2

MSP-PR MSP-PR


2.5 MSP-PR-CC cross connector 2.6 MSP-PR-MC/EC middle/end clamp

The design resistances of the MSP-PR-CC cross connector are stated in Table 10. The shear design resistances include the de-sign resistance from pre-stress of the screw as well as an additional shear resistance from the normal component of additional pressure from actions.

The design resistances of the MSP-PR-MC middle clamp are stated in Table 11. The design resistances of the MSP-PR-MC end clamp are stated in Table 12. The shear design resistances include the design resistance from pre-stress of the screw as well as an additional shear resistance from the normal component of additional pressure from actions.

Fig.5: MSP-PR-CC resistance coordinates Fig.6: MSP-PR-MC middle clamp resistance coordinates

Fig.7: MSP-PR-EC end clamp resistance coordinates

Table 10: MSP-PR-CC design resistances

Roof angle [α in °] 0 10 20 30 40 50 60 70 80 90

Suction design resistance [NRd in kN] -1.59 -1.59 -1.59 -1.59 -1.59 -1.59 -1.59 -1.59 -1.59 -1.59

Shear design resistance [VRd in kN] ∞ 3.12 0.93 0.64 0.55 0.50 0.48 0.45 0.44 0.42

Shear design resistance [SRd in kN] ∞ 6.93 2.06 1.42 1.22 1.12 1.05 1.00 0.96 0.93

Table 11: MSP-PR-MC design resistances

Roof angle [α in °] 0 10 20 30 40 50 60 70 80 90




Table 12: MSP-PR-EC design resistances

Roof angle [α in °] 0 10 20 30 40 50 60 70 80 90




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SRd2

VRd2

-NRd

SRd

VRd

-NRd

SRd

VRd

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Hilti Corporation | 9494 Schaan | Liechtenstein | P +423-234 2111 | F +423-234 2965 | www.hilti.com/solar

Hilti. Outperform. Outlast.

Table 13: MSP-PR-RHF deflection (SLS) with interaction of pressure and shear

Roof angle [α in °] 0 10 20 30 40 50 60 70 80 90

Deflection [d in mm] 3.3 3.3 3.3 3.3 3.2 3.2 3.2 3.0 2.6 2.2

Table 14: MSP-PR-RHA/RHC deflection (SLS) with interaction of pressure and shear

Roof angle [α in °] 0 10 20 30 40 50 60 70 80 90

Deflection [d in mm] 3.3 3.4 3.4 3.4 3.4 3.4 3.5 3.5 3.6 3.6

3. Deflection of MSP-RHF/RHA/RHC roof hook (Service Limit States)

An installation according to the MSP-PR operating instructions has a minimum gap d, at the lower end of the roof hook, of 7 mm in unloaded condition, see Figure 8. With a safety of 2 mm, the deflection of the MSP-RHF/RHA/RHC roof hook can be up to 5mm. The deflections of MSP-PR-BP base plates as well as the deformation of the MSP-PR-SP spacer plate and the structural timber are not considered. The actual deflections at the MSP-RHF/RHA/RHC roof hook service limit states are stated in Table 13 and Table 14. The deflections are calculated under design resistance level, see Table 3 and Table 4, divided by the overall safety factor of 1.4.

Fig.8: MSP-PR-RHF/RHA/RHC in unloaded condition

NRd

VRd

αd

MSP-PR - Hilti MSP-PR page 2 Technical ... VDI 2230 Blatt 1:2003-02 ... well as an additional shear resistance from the normal component of additional pressure from actions.

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