FEMA P55 Coastal Construction Manual, Fourth Edition - Mad Cad

Volume II CONSTRUCTING THE BUILDING 13
is by pneumatic nail gun. Many nail guns use nails commonly referred to as “sinkers.” Sinkers are slightly
smaller in diameter and thus have lower withdrawal and shear capacities than common nails of the same
size. Nail penetration is governed by air pressure for pneumatic nailers, and nail penetration is an important
quality control issue for builders. Many prescriptive codes have nailing schedules for various building
elements such as shearwalls and diaphragms.
Another critical connection is the connection of the floor to the piles. Pile alignment and notching are critical
not only to successful floor construction but also to the structural adequacy during a natural hazard event
(see Section 13.1.1). Construction problems related to these issues are also inevitable, so solutions to pile
misalignment and overnotching must be developed. Figure 13-16 illustrates a method of reinforcing an
overnotched pile, including one that is placed on a corner. The most appropriate solution to pile misalignment
is to re-drive a pile in the correct location. An alternative is illustrated in Figure 13-17, which shows a method
of supporting a beam at a pile that has been driven “outside the layout” of the pile foundation. Figure 13-18
COASTAL CONSTRUCTION MANUAL
Figure 13-16.
Reinforcement of
overnotched piles
13-21