EFCO Special Purpose Windows Installation - Manual (Page 9)

EFCO CORPORATION 3/5/2014 PART NO. YW40 Page 6 of 7
Window Installation Instructions - General Overview Section -
B. Perimeter anchors should never penetrate a tank or tubular shape at a window sill. Any
penetration of the frame must be visible for sealing purposes.
C. Blocking must be of sufficient size and shape to support the frame at all anchorage locations.
The blocking must prevent the anchorage fasteners from bowing, racking, twisting, or
distorting the window frames and accessories in any manner. Excessive shim heights could
increase the prying tension and/or bending forces on the perimeter fastener. Refer to the
approved shop drawings and/or design professional for project specific applications.
Substrate
Edge
Distance Substrate
Edge
Distance
Substrate
Thickness
Shim
Height
Frame
Edge
Distance
Bearing
Surface
Edge
Distance Bearing
Surface
Edge
Distance
Frame
Edge
Distance
Perimeter
Fastener
Note: This sketch is a typical
representation, other anchorage
systems will require similar information.
These recommendations are for general erection procedures only. For actual job
conditions, see the details on the shop drawings. For perimeter anchor type and spacing,
refer to the approved shop drawings or consult the project design professional.