The maximum allowable length, in inches, of a post being Multiply 25 or 50 times the width, or actual dimension of the timber
used for vertical shoring =
For the audible warning to occur the length to width ratio 25
or L/D ratio of a wood post should be no greater than
The maximum L/D allowance is 50
Components that determine the strength of a wood post The compression weight perpendicular to the grain of the header or sole plate.
system. The vertical capacity of the post. The strength of the header beam and the sole
plate. The strength of the ground or the structure below the sole plate.
Capacity of header beams and sole plates are their bending and horizontal shear strength.
determined by
The maximum bending strength for Douglas fir and 1,500 pounds per square inch
Southern pine =
The requirement that posts be positively attached at the the ability to readjust the wedges after making these connections.
top and bottom, along with the need for diagonal
bracing, limits
,If additional adjustment to shores is needed after shims may be added directly under the load or under the sole plate.
diagonal braces are installed,
All wood post systems should have diagonal bracing.
All connection points in wood post systems are secured gusset plates or cleats.
with
Diagonal braces are nailed to ____, providing a ____, and ____. each post, header, sill; top and bottom connection to exterior post; confining the
wedges.
Gusset plates can be cut into triangular configurations that will double the available amount of gusset plates.
If the recommended dimensions for headers and sole the load capacity increases.
plates are used and the span between the posts is
reduced,
All materials used for bracing and cleats should match the dimension of the wood posts being used.
The headers of a vertical shore system may slope up to 6" in a 10-foot span. This rule applies to all vertical post shoring systems.
,For slopes greater than allowed for a vertical shore, ____ a sloped floor
shoring systems should be used.
The calculations for a 4 x 4" vertical post system 4 x 8", ½
regarding maximum span and maximum load capacity is
based on the use of a ____ header and sole plate. If a 4 x 4"
is used for a header and sole plate, the span and load
capacity should be reduced by ___ the value.
Calculations for a 6 x 6" vertical post system regarding 6 x 12", ½
maximum span and maximum load capacity is based on
the use of a ____ header and sole plate; if a 6 x 6" is used
for a header and sole plate, the span and load capacity
should be reduced by ___ the value.
Measuring shoring material when being used with to the nearest ½"
wedges. When possible round off measurements ____ to
ease in marking and cutting.
For 2 x 4 x 12" and 4 x 4 x 18" wedges deduct ____ from the the thickness of one wedge
length of the shoring material be measured.
, 4 x 4 x 18" wedges can be moved together to a thickness 6"
of ___ while still maintaining full contact with the
perpendicular 4 x 4".
2 x 4 x 12" wedges can be moved together to a thickness 2 1/4"
of ___ while still maintaining full contact with the
perpendicular 4 x 4".
When securing gusset plates to the top of a Raker shore 8 - 8d, 5 - 8d
place ___ nails in the wall plate and ___ nails in the diagonal
brace (Raker).
When securing gusset plates to the bottom of a Raker 8 - 8d, 5 - 8d
shore place ___ nails in the vertical post (Wall) and ___ nails
in the horizontal post (Sole).
When securing gusset plates to the rear section of a 5 - 8d, 8 - 8d
Raker shore place ___ nails in the diagonal Raker and nails
in the sole plate.
When securing 2 x 6" diagonal and horizontal braces to 5 - 16d
the 4x4 timbers place ___ nails.
used for vertical shoring =
For the audible warning to occur the length to width ratio 25
or L/D ratio of a wood post should be no greater than
The maximum L/D allowance is 50
Components that determine the strength of a wood post The compression weight perpendicular to the grain of the header or sole plate.
system. The vertical capacity of the post. The strength of the header beam and the sole
plate. The strength of the ground or the structure below the sole plate.
Capacity of header beams and sole plates are their bending and horizontal shear strength.
determined by
The maximum bending strength for Douglas fir and 1,500 pounds per square inch
Southern pine =
The requirement that posts be positively attached at the the ability to readjust the wedges after making these connections.
top and bottom, along with the need for diagonal
bracing, limits
,If additional adjustment to shores is needed after shims may be added directly under the load or under the sole plate.
diagonal braces are installed,
All wood post systems should have diagonal bracing.
All connection points in wood post systems are secured gusset plates or cleats.
with
Diagonal braces are nailed to ____, providing a ____, and ____. each post, header, sill; top and bottom connection to exterior post; confining the
wedges.
Gusset plates can be cut into triangular configurations that will double the available amount of gusset plates.
If the recommended dimensions for headers and sole the load capacity increases.
plates are used and the span between the posts is
reduced,
All materials used for bracing and cleats should match the dimension of the wood posts being used.
The headers of a vertical shore system may slope up to 6" in a 10-foot span. This rule applies to all vertical post shoring systems.
,For slopes greater than allowed for a vertical shore, ____ a sloped floor
shoring systems should be used.
The calculations for a 4 x 4" vertical post system 4 x 8", ½
regarding maximum span and maximum load capacity is
based on the use of a ____ header and sole plate. If a 4 x 4"
is used for a header and sole plate, the span and load
capacity should be reduced by ___ the value.
Calculations for a 6 x 6" vertical post system regarding 6 x 12", ½
maximum span and maximum load capacity is based on
the use of a ____ header and sole plate; if a 6 x 6" is used
for a header and sole plate, the span and load capacity
should be reduced by ___ the value.
Measuring shoring material when being used with to the nearest ½"
wedges. When possible round off measurements ____ to
ease in marking and cutting.
For 2 x 4 x 12" and 4 x 4 x 18" wedges deduct ____ from the the thickness of one wedge
length of the shoring material be measured.
, 4 x 4 x 18" wedges can be moved together to a thickness 6"
of ___ while still maintaining full contact with the
perpendicular 4 x 4".
2 x 4 x 12" wedges can be moved together to a thickness 2 1/4"
of ___ while still maintaining full contact with the
perpendicular 4 x 4".
When securing gusset plates to the top of a Raker shore 8 - 8d, 5 - 8d
place ___ nails in the wall plate and ___ nails in the diagonal
brace (Raker).
When securing gusset plates to the bottom of a Raker 8 - 8d, 5 - 8d
shore place ___ nails in the vertical post (Wall) and ___ nails
in the horizontal post (Sole).
When securing gusset plates to the rear section of a 5 - 8d, 8 - 8d
Raker shore place ___ nails in the diagonal Raker and nails
in the sole plate.
When securing 2 x 6" diagonal and horizontal braces to 5 - 16d
the 4x4 timbers place ___ nails.
