32 13 13 Concrete Paving

32 13 13 Concrete Paving


Specification Details

Pages

2

Dimensions

8.5" x 11"

Editable

Word Doc

Usage Limit

Unlimited Projects

Section

32 13 13

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Concrete Paving

Use this CSI 3 part SimpleSpecs™ master specification to specify cast-in-place concrete paving for use in vehicular and pedestrian areas, with various finishes.

 

Paving thicknesses and locations and details of expansion and control joints may be indicated on the drawings; coordinate as required.

 

Reinforcing steel comes in two types:

Deformed bars provide an irregular surface that bonds with the concrete, preventing slippage. Bars can be bent to required shape and connected by wire tying or welding.

Welded wire mesh uses wires placed in a rectangular pattern and welded at the intersections. This type of reinforcing is commonly used for concrete flatwork.

 

In climatic conditions where rusting of the reinforcing is anticipated, galvanized or epoxy-coated reinforcing can be used.

 

The simplest concrete mix includes Portland cement, aggregate, and water. Varying the amount of each ingredient results in changes to compressive strength, slump, and finishing characteristics. Additives also change the concrete’s characteristics.

 

Concrete must be protected from moisture loss until it obtains its final characteristics, a process called “curing”. Curing is done using several methods:

 

– Curing compound: A chemical compound is applied to the concrete immediately after placement. This is typically used on slabs and flatwork.

– Curing paper: A special paper is placed over the concrete immediately after finishing.

– Wet curing: Concrete is kept moist by wetting with clean water.

 

Many other concrete finishes are available beyond what is included in this section, including:

 

– Exposed aggregate: Specially selected small aggregate is placed in the concrete mix. After placement, the surface is washed with clean water to remove the overlying cement matrix. Alternatively, the aggregate may be “seeded” onto the wet concrete surface and embedded by rolling prior to the concrete set.

 

– Surface retarded: A chemical compound that delays the concrete set is applied to the concrete immediately after floating and troweling. After the lower concrete sets and the surface has achieved the desired look, the chemical compound is washed off.

 

– Salted: After the concrete is floated and troweled rock salt is broadcast over the surface and allowed to pit the surface to the desired look, then washed off.

 

– Sandblasted: Concrete is floated and troweled, then allowed to set. The surface is then sandblasted to a predetermined depth and exposure of aggregate.

 

Patterned or stamped: After the concrete is floated and troweled a pattern is pressed into the surface using mats or tools.

 

Related SimpleSpecs™ master specifications:

32 13 13 – Concrete Paving

32 14 13 – Precast Concrete Unit Paving

32 14 16 – Brick Unit Paving

32 14 39 – Tile Paving

32 14 40 – Stone Paving

 

Concrete Paving

       
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Adding More Words Does Not Make Specifications More Enforceable.    
Design professionals are accustomed to seeing lengthy project specifications, so why is SimpleSpecs™ so short?
 
Specifications have grown evermore wordy over the years for several reasons:
  1. The mistaken belief that specifications must be lengthy and legal-sounding to be enforceable.  In fact, quite the opposite is true.  Having shorter, easily understood specifications makes us less likely to have problems in the field.
  2. A belief that having lots of words protects us from a Contactor making mistakes.  There is no way to include enough statements to protect yourself from a bad contractor, regardless of the length of your specification.
  3. Our desire to be in control of the project by specifying means and methods instead of including simple, enforceable statements.
 
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