Metal-sales Magna-Loc 180 User Manual download pdf (Page 15)

PML-15

MAGNA-LOC

800.406.7387 (Corporate Ofce) • www.metalsales.us.com

design / insTallaTion ConsideraTions (ConT)

Steel roong panels are subject to dimensional changes after installation due to exposure to varying temperatures. The greatest

inuence is solar energy. Steel roong absorbs various amounts of heat depending upon color, nish, angle of exposure, and time

of exposure.

The relationship of ambient temperature to building structural temperature must be considered when designing a Magna-Loc roof

system. The oating clips for the Magna-Loc panels are designed for expansion and contraction of the panels in the longitudinal

direction. Lateral expansion and contraction is accommodated by the conguration of the panel cross section and causes negli-

gible panel movement.

When the total length of panel run exceeds the capability of the clips to accommodate the thermal movement, expansion joints

must be designed into the structure.

SYSTEM EXPANSION / CONTRACTION

The Magna-Loc roof system can be installed with components that allow the panels to either oat independently or x perma-

nently to the substructure. Choice of system will depend upon building design and regional temperature range

(from summer highs to winter lows).

SELECTION OF SYSTEM COMPONENTS

Magna-Loc Floating Clips- The oating clips allow the roof surface (panels) to move independently of the roof substructure to

allow for thermal expansion and contraction. These clips are designed with a vertical tab that slides along the base section of the

clip.

Magna-Loc Fixed Clips- Fixed clips may be used on panel runs of less than 20'-0", unless considerable thermal expansion or

contraction is a consideration. When utilizing a Fixed Utility Clip, a pancake headed fastner must be used.

MAGNA-LOC FIXED CLIPMAGNA-LOC FLOATING CLIP**

Vertical tab

Base

The following chart should be used to determine proper fasteners required for clip installation on the selected applications.

(See Product General Information page PGI-12 for other fasteners available.)

* Length of Deck Screw will vary depending on the total thickness of the rigid insulation and metal (see page PGI-12).

** Based on UL-580. Subject to project loading, closer clip spacing may be required. Contact your local Metal Sales branch

representative for more information (see pages PGI-2 and 3).

2 FASTENERS

CLIP OVER RIGID

INSULATION /

METAL DECK

2 FASTENERS

-14 x 1

" SELF DRILLER N/W

-14 x 1

" SELF DRILLER N/W

#10 X 1" PANCAKE HEAD WOOD

2 FASTENERS

NUMBER

REQUIRED

TYPE OF FASTENERAPPLICATION

INSTALLATION

REQUIREMENTS

24 GAUGE

**CLIP

SPACING

**5'-0" O.C.

**3'-0" O.C.

**5'-0" O.C.

STANDARD

#10 X 1" PANCAKE HEAD WOOD

22 GAUGE

**3'-0" O.C.

CLIPS

OVER PURLINS

(16 GA. MIN)

CLIPS OVER

" WOOD DECK

"-13 DECK SCREW*

24 GAUGE

**4'-0" O.C.

22 GAUGE

**4'-0" O.C.

"-13 DECK SCREW*

STANDARD

22 GAUGE

RAKE ZEE

" UTILITY

" LOW

" HIGH

SYSTEM COMPONENTS

SYSTEM

CLIP

EAVE PLATE

THERMAL BLOCK

INSULATION

UTILITY

LOW

HIGH

" UTILITY

(FIXED ONLY)

" LOW

(FLOATING OR FIXED)

" HIGH

(FLOATING)

" LOW

" HIGH

NONE REQUIRED

" TO 4" BLANKET

4" TO 6" BLANKET

NONE REQUIRED

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 27 28

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Metal-sales Magna-Loc 180 User Manual Page 15

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