DeWalt Powers PA3500 Instrucciones De Funcionamiento página 6

PA3500
FASTENER LENGTH SELECTION IN CONCRETE
For permanent applications using pins in concrete, first determine the thickness of
Fixture
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
Embedment
in the face shell of masonry block, select a fastener length which will not exceed the
thickness of the face shell.
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
Thread Length
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
Embedment
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
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
not penetrate the steel member, or a thickness of steel greater than 3/8" (10mm),
job site performance tests are recommended.
BASE MATERIAL THICKNESS
1/8"
Steel base materials should be a minimum of 1/8" (3mm) in thickness.
EDGE DISTANCE
1/2"
For installations in A 36 steel, 1/2" (13mm) is the recommended minimum edge
distance.
SPACING
1-1/2"
The recommended minimum distance between fastenings is 1-1/2" (38mm) center to
center for installations in ASTM A 36 steel.
FASTENER LENGTH SELECTION IN STEEL
For permanent applications when using pins in steel, first determine the thickness of
the fixture to be fastened. To this, add the thickness of the steel base material plus a
minimum of 1/4" (6mm) to allow for proper point penetration. This will be the minimum
fastener shank length required. Do not select a fastener length longer than that
required for the application.
An excessively long shank can burnish or polish the hole created in the steel
resulting in a reduction in load capacity.
For removable applications with threaded studs, the shank length required is equal
to the thickness of the steel base material plus a minimum of 1/4" (6mm) to allow for
proper point penetration. This will be the minimum fastener shank length required. Do
not select a shank length longer than that required for the application. An excessively
long shank can burnish or polish the hole created in the steel resulting in a reduction
in load capacity. 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 studs, the maximum tightening torque is 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.
2 ft.-lbs. or 2.7 Nm
MAXIMUM TORQUE FOR 3/8" STUD
4 ft.-lbs. or 5.4 Nm
EN 6