EFCO 8750XD - Manual (Page 14)

EFCO 2012 Page 14
Series 8750XD Unitized Curtain Wall Installation Instructions
Section 3 - Static Starter Sill Preparation and Installation
Slide static loading clips in
place before anchoring sill
Apply shims between
starter sill and substrate.
Static Starter Sill
Figure 9
Shim starter
sill to proper
elevation
height.
Pre-fabricated oversized
anchoring slot.
Serrated Washer
Anchor bolts as required.
Shim as necessary to
support entire load.
Figure 7
Figure 8
2. Verify that all job site conditions and accompanying substrates receiving the installation are in tolerance and are in accordance with the contract documents.
3. Pre-cleaning
the substrates where the caulk joints will be applied later may be advisable prior to setting the starter sill. Final cleaning and sealant primer
application where required should be performed only immediately before caulk joint sealant application.
4. Use established bench marks to ensure the accuracy of the starter sill location. Precise measurements and coordination with regard to established bench
marks are critical to ensure that the starter sills are installed in the correct location. Improperly installed, or miss-located starter sills will cause significant
problems for the remainder of the erection process. Align with slab anchors on all floors above before unit installation starts. See page 24 and shop drawings.
5. Refer to the approved shop drawings for type, size, and specific anchor details. Shim the starter sill to the proper elevation height making sure the starter sill
is level. The shims used must be full bearing shims. The shims must fully support the entire load bearing surface of the starter sill at each anchor location.
Refer to the project structural calculation package and final approved shop drawings for detailed information.
6. EFCO recommends minimum of a 1/2” caulk joint between the starter sill and the substrate.
7. When applying anchor bolts to the starter sill, pre-fabricated serrated washers (FM59 or FM60) must be used. The serrated washers will lock the starter sill
into position when the anchor bolt is tightened. See Figures 7 thru 9. After verifying the final position of the starter sill, secure the anchor bolts as required.