DeWalt P35s Manual Del Usario página 5

P35s
Concrete base material should be at least three (3) times as thick as the fastener
embedment penetration. If the concrete is too thin, the compressive forces forming at
the fasteners point can cause the free face of the concrete to break away. This can
create a dangerous condition from flying concrete and/or the fastener and also results
in a reduction of fastener holding power. For applications in the face shell of concrete
masonry block, select a fastener length which will not exceed the thickness of the
face shell.
penetration
FASTENER PENETRATION GUIDE
The following table lists typical embedment or penetration depths expected in the base
3x
materials listed. The penetration will vary depending on the density of the material.
penetration
This table should be used as a guide since the consistency of these materials varies.
When in doubt, a job site performance test should be conducted.
Soft Masonry
Average Concrete
3"
Dense Concrete Pre-Stressed/Pre-Cast Concrete
EDGE DISTANCE
Do not fasten closer than 3" (76mm) from the edge of concrete. If the concrete cracks,
the fastener may not hold. Closer edge distances for applications such as sill plates
3"
may be permitted if specific fastener testing has been conducted.
SPACING
Setting fasteners too close together in concrete or masonry can cause cracking. The
Fixture
recommended minimum distance between fasteners is 3" (76mm) center to center.
Embedment
FASTENER LENGTH SELECTION IN CONCRETE
For permanent applications using pins in concrete, first determine the thickness of the
fixture to be fastened. To this, add the required embedment or penetration into the base
material. This will be the fastener shank length required. For applications in the face
Thread Length shell of masonry block, select a fastener length which will not exceed the thickness of
the face shell.
Embedment
For removable applications with threaded studs, the shank length required is
equal to the embedment depth required. To determine the minimum threaded length,
add the thickness of the fixture and the nut / washer thickness. The nut and washer
thickness is equal to the nominal thread diameter. Do not over tighten threaded parts.
Maximum tightening torque values are listed in the table below. Use of a nut setter
is recommended to reduce the possibility of over tightening the fasteners. For critical
applications, perform a job site test.
MAXIMUM TORQUE FOR 1/4" STUD
2 ft.-lbs. or 2.7 Nm
INSTALLATION IN STEEL
The following guidelines are based on the installation of a fastener in ASTM A 36
structural steel with the point fully penetrating the steel member. Recommended steel
material thickness ranges from a minimum of 1/8" (3mm) to a maximum of 3/8"
(10mm). For use in higher strength structural steel, applications where the point does
1/8"
not penetrate the steel member, or a thickness of steel greater than 3/8" (10mm), job
site performance tests are recommended in accordance with ASTM E 1190.
1/2"
BASE MATERIAL THICKNESS
Steel base materials should be a minimum of 1/8" (3mm) in thickness.
EDGE DISTANCE
1-1/2"
DENSITY TYPICAL BASE MATERIAL
Concrete Block
Poured Concrete
MAXIMUM TORQUE FOR 3/8" STUD
4 ft.-lbs. or 5.4 Nm
EN
PENETRATION
1" (26mm) – 1-1/4" (32mm)
3/4" (19mm) – 1" (26mm)
5/8" (16mm) – 3/4" (19mm)
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