Ashlar Masonry

Planning of Anchors for Ashlar, Band, Column and Pilaster Facings

Planning of Anchors for Ashlar, Band, Column and Pilaster Facings

Use of the proper type and the correct quantity of anchors to fit the design and size of the stone will help cut cost of both manufacturing and setting of the stone. Anchors projecting from the backs of stones often cause casting problems. Inserts are cast in the backs of stones instead of projecting bolts. Thin stones 2″ to 2 1/2″ thick, cast with pockets for strap anchors to lap and tie the stones back to the wall. Thin walls cause a casting problem and tend to fracture after stones are set.
Planning the proper anchor for simplicity when setting stones is an important time factor. Bolt anchors that are located in hard to reach areas, or using an anchor requiring two different trades for setting, may be simplified by using a different type anchor.

The cost of anchors can be reduced by selecting the proper anchor. Sometimes two anchors are shown where one can be used to do the same job. Various type anchors and how they are used may be found on all detailed pages.

Weight of Cast Stone is approximately 150 lbs per cubic foot.

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© 2016 Russell Cast Stone, Inc. All Rights Reserved.

Ashlar Facing Anchors

Ashlar Facing Anchors

Ashlar facing panels may be anchored to the structure in a variety of ways as shown below. The most simple anchor is the strap anchor shown below the coping in the upper left detail. The use of the J-bolt is shown in several applications.

This provides a positive connection and allows careful positioning of the stone by adjusting the nut on the threaded end. The J-bolt as a support for the soffit panel has been used quite successfully and is relatively easy to install.

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Anchoring of Ashlar Above Windows

Anchoring of Ashlar Above Windows

Three different methods for anchoring the bottoms of large ashlar pieces resting on continuous shelf angles are shown here.
Where block backing occurs, two hooks can be cast near bottoms of each stone and tied to back up wall with straps.

With concrete backing, 1/2″ square bars or #3 reinforcing bars can be welded to the angle centered at each joint. Where more bars are required with very long stones-continuous slots can be cast in the concrete beams to receive dovetailed strap anchors with dowel, detailed at the planning section, which will occur at each vertical joint. Dowel holes will be provided at the ends of stones to receive this anchor.

When clearance behind the angle allows lapping an anchor over the back of the angle, dowels and bent rods may be used as detailed.

Where soffits are required, a fourth method using inserts cast in fascia stones may be used. Click here to refer to soffit details.

In cases where steel stud construction is to be used, these details can be modified as explained by clicking here.

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Ashlar Facing at Entrance and Window

Ashlar Facing at Entrance and Window

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Ashlar Facing

Ashlar Facing

Profiles as shown are detailed with the thickness of the section returning at the proper depth for economy. Return heads should be kept at the same width as stone profile whenever possible. Leg returns, “L” – shaped stones or “U” – shaped stones are more costly to manufacture.

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© 2016 Russell Cast Stone, Inc. All Rights Reserved.