Shaw & Sons formwork Page 2

As shown in these images, precise formwork results in precise concrete work with crisp and precise edges, smooth grades and even transitions.

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Radius walers are cut from the predetermined radius layout points and are laminated together. Studs are cut to predetermined height and placed at 18 inches o.c. on centerline of plywood joint spacing. 5/8-inch acx plywood is attached to subframe formwork and covered with a 3/8-inch M.D.O. plywood.
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Formwork is set and concrete is placed, vibrated and finished. Forms are removed after three days of water curing concrete. Immediately after form removal, wall joints are determined and scribed.
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Joints are saw cut immediately to approximately 1-1/2 inches in depth. After three weeks cure time, walls are ready for waterproofing backfill and planting. Alternate crack control method is acheived by placing vertical trapezoidal-shaped reveals on panel joints.
Shaw & Sons formwork Page 2

Concrete jointing serves two basic purposes …to control the location of anticipated random slab cracking, and to aid in the esthetic appearance of architectural concrete. Below are the steps taken by Shaw & Sons to prepare for a concrete pour using the company's patented Speed Dowels™ for finely finished expandable joints. Speed Dowels™ provide precise slip dowel allignment while greatly reducing cracking, spalling and displacement at construction joints.

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Attach Speed Dowel™ baseplate on form with 6-8 penny nail and slip on Speed Dowel™ tube. Chair or block reinforcing steel and presaturate subgrade prior to concrete pour. Place and finish concrete.
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Leave forms on for mimimum of 12 hours. Remove forms and Speed Dowel™ base plate. Roll out 1/4-inch polypropylene foam.
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Spray 3M 77 high tack glue on polypropylene foam and edge of concrete. Attach 1/4-inch polypropylene foam below top surface of concrete. Place appropriate size smooth dowel through foam into Speed Dowel™ cavity. (Repeat #2).
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Place and finish concrete. Sawcut cold joint at total 1 inch depth to top of foam. Do not cut steel dowels. Finished construction joint.

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For more information about structural and architectural concrete, contact Shaw & Sons:
(949) 642-0660
www.shawconstruction.com
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