Bosch 11335K - 35 lb. Demolition Breaker Hammer Installation Manual download pdf (Page 10)

10 Diamond Pier

Installation Manual

Assemble Tools and Supplies

Inspect your Diamond Pier assemblies to ensure that no parts are flawed or have been damaged in

shipping. Do not install a concrete pier if it is a structural crack with a fissure running internally into the

pier (see "Pier Integrity" on page 15). Slight flaking or chipping is acceptable; a pier with surface flaking

or chipping may be installed.

Verify that you have the correct number of concrete pier heads with the corresponding number of

bearing pins (4 per pier), inspection caps (4 per pier), and inspection plugs (4 per pier), and that the

anchor nuts thread properly on the pier anchor bolts.

You will need to assemble the following tools and gear:

• Automatic driving hammer with 1-1/8” hex shaft driving bit (see "Breaker Hammers and Driving

Bits," page 14)

• Square-edge shovel

• Sledgehammer

• Torpedo level

• Tape measure

• Pipe wrench

• Proper safety goggles, ear protection, insulated gloves, protective clothing, and boots

We recommend a minimum two-person crew for installation.

Installation

Identify and Mark Location

1. Locate where you would like the center of the pier anchor bolt to be.

2. Mark the location by using reference points that will easily identify the center location of the pier

even after top soil is removed.

3. We recommend you set a string line centered on the anchor bolt or with a consistent offset from

the bolt or post bracket to maintain alignment.

Set the Concrete Head

1. Dig a tapered square hole the same size and

shape as the bottom half of the concrete head (see

Figure 3). This creates a cradle to steady the pier

for leveling. Soils directly below the pier should be

left loose.

2. Following safe lifting procedures, carefully lift the

concrete head and position it in the hole to its

midpoint.* Ensure top is level and centered on your

alignment.

3. Replace some of the removed soils back around

the sides of the pier at grade, lightly tamping to

maintain level and alignment during pin driving.

(See Notes under “Drive in the Pins” on page 11.)

*The pier may also be buried deeper for aesthetic considerations only. Access to the top of the pier needs

to be maintained. Be sure to keep top half of pier clean until caps are applied. The pier MAY NOT be

buried for structural purposes, or cast in a concrete slab. If a slab or patio pavers are intended, an

expansion joint 1” larger than the widest cross section of the pier at its midpoint and encircling the entire

pier must be provided, and proper drainage must be maintained.

Figure 3. Tapered Hole for

Concrete Head

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Bosch 11335K - 35 lb. Demolition Breaker Hammer Installation Manual Page 10

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