Tilt Technical Manual

Cylindrical Deadman © 2018
If your project requires the use of a deadman in lieu of an anchor cast into a floor slab, the table below may be used to
select a round cylindrical deadman that will have the proper size to withstand the applied brace loads. The minimum
deadman size required for a panel brace varies with the applied brace load, brace angle and soil conditions. To select
the proper size deadman for a particular panel brace:
1. Find the required minimum “Deadman Load” noted at the top of the panel detail sheet.
2. Follow down under the column for a desired deadman diameter to a load value that is equal to or greater than the
required “Deadman Load”.
3. Look across the row to the far left and read the minimum deadman depth required for the diameter selected.
Example:
1. Suppose the “Deadman Load” indicated on a panel detail sheet indicates a load of 4900 pounds for the braces used
for that panel.
2. Find a load number on the table equal to or greater than 4900 pounds. Under the 18” Dia. column, find “4996”
which is the smallest load number that is greater than the 4900 pounds required. Look across to the left in this row
and find 7’-6” as the minimum depth required for the selected 18” diameter deadman. [Similarly, other acceptable
deadman sizes for a 4900 pound load would be : 24” dia. x 6’-6” deep, 30” dia. x 6’-0” deep, 36” dia. x 5’-6” deep,
or 48” x 5’-0” deep]
Warning:
This table applies to auger excavated round cylindrical deadmen only, cast directly against undisturbed
soil with the minimum soil and concrete properties noted below. Do not use Burke Tube or other forming
material inside the hole to form the deadman, as this will reduce the load carrying capacity of the
deadman. Do not place deadmen in or close to embankments, as this may reduce its load carrying
capacity. The deadman sizes obtained from the table are Meadow-Burke’s recommended minimum sizes
based on the soil conditions listed. A qualified professional engineer familiar with the job site soil
conditions should review the deadman size selected to ensure that it is adequate in size and properly
located to withstand the applied brace loads.
Minimum Concrete Properties:
Concrete compressive strength = 2500 p.s.i.
Concrete density = 145 p.c.f.
Minimum Soil Properties:
Soil density = 100 p.c.f.
Angle of soil shearing resistance = 35 degrees
Vertical soil bearing = 1500 p.s.f.
Lateral soil bearing = 150 p.s.f.
Diameter
c L c L
Brace Load
c L c L
Deadman Load
Top of Deadman and Undisturbed Soil
BG-75 Coil Brace Insert
for 5" minimum slab depth
3 - #3Ties at 3" on center
4 - #4 Vertical Bars
Depth
CONCRETE
DEADMAN
MEADOW
ENGINEERING
BURKE
3.1.18
For Loads in kN multiply by 225 to obtain load in lbs.
Sheet GNB3