Segregating the Mix
Dropping concrete into a drilled caisson from the surface will result in a weak caisson, as the aggregates segregate when dropped from excessive heights.
Bottoms UP!
ACI
318-11 says that all concrete shall be placed as close to the final point
of placement as possible.
That means filling the drilled hole from the bottom up.
Title 24 of the California Building Code.
Section 1905A.10.9 states:
"In
depositing concrete in columns, walls or thin sections of considerable
height, concrete shall be placed in a manner that will prevent
segregation... unless otherwise approved by the enforcement agency, the
unconfined vertical drop of concrete... to the placement surface shall
not be greater than 6 feet (1829 mm)."
So, in California, the code allows contractors to drop the concrete a maximum of 6 feet.
Paolo Benedetti, SWD
Aquatic Artist, Watershape Consultant, Expert Witness, International Construction Management
Contact the author at: info@aquatictechnology.com or 408-776-8220
"Creating water as art."™
Aquatic Technology Pool and Spa©
©www.aquatictechnology.com
All rights reserved.
Monday, March 24, 2014
Saturday, March 15, 2014
Custom Swimming Pool Design Construction Napa Sonoma CA
You are building a custom luxury home. You've hired the best architect. You've engaged an award winning landscape architect. You've retained the best general contractor.
Yet, you're leaving the design and construction of the largest element on the property to the "pool guy" that the general contractor picks?
Education and Experience
You're hiring the very best for your project, why are you leaving the design and construction of the swimming pool to an uneducated "pool guy?"
Wouldn't you rather have your yard designed and constructed by someone with an education and proven track record of exemplary projects?
Projects of impeccable quality and caliber, for clients that are so demanding that many are never even published?
An aquatic designer with a background in architecture and design can be invaluable when creating the plans for your dream property.
Design Phase
To insure that the project is seemlessly incorporated into the architecture and that the mechanical systems are laid out in a thoughtful and purposeful manner, it is important to retain the services of an experienced aquatic consultant and designer during the design phase.
Then they can make suggestions that may save you thousands of dollars during the build-out, changes that may be too late to make one the project has been engineered.
Paolo Benedetti, SWD
Aquatic Artist, Watershape Consultant, Expert Witness, International Construction Management
Contact the author at: info@aquatictechnology.com or 408-776-8220 "Creating water as art."™
Aquatic Technology Pool and Spa© ©www.aquatictechnology.com
All rights reserved.
Yet, you're leaving the design and construction of the largest element on the property to the "pool guy" that the general contractor picks?
Education and Experience
You're hiring the very best for your project, why are you leaving the design and construction of the swimming pool to an uneducated "pool guy?"
Wouldn't you rather have your yard designed and constructed by someone with an education and proven track record of exemplary projects?
Projects of impeccable quality and caliber, for clients that are so demanding that many are never even published?
An aquatic designer with a background in architecture and design can be invaluable when creating the plans for your dream property.
Design Phase
To insure that the project is seemlessly incorporated into the architecture and that the mechanical systems are laid out in a thoughtful and purposeful manner, it is important to retain the services of an experienced aquatic consultant and designer during the design phase.
Then they can make suggestions that may save you thousands of dollars during the build-out, changes that may be too late to make one the project has been engineered.
Paolo Benedetti, SWD
Aquatic Artist, Watershape Consultant, Expert Witness, International Construction Management
Contact the author at: info@aquatictechnology.com or 408-776-8220 "Creating water as art."™
Aquatic Technology Pool and Spa© ©www.aquatictechnology.com
All rights reserved.
Saturday, March 8, 2014
Landscape Lighting around a swimming pool - prohibited within 10 feet!
When it comes to low voltage landscape lighting around a swimming pool, the National Electric Code has established a clearly defined exclusionary zone.
According to the National Electric Code (2011), Section 411.4, low voltage electrical systems cannot be located within 10 feet of a pool, spa or hot tub, even if the transformer is GFCI protected.
This does not mean that using a "pool rated" low voltage transformer allows you to move the lighting closer. It is strictly and clearly prohibited under any condition.
Additionally, low voltage illuminares (fixtures) are usually constructed of metal (aluminum, brass, copper or cast metal). They are not provided with a means to bond them to the swimming pool's bonding grid, since they are over 4 square inches in size.
So, how do you provide landscape lighting within 10 feet of a pool?
Hire someone who knows the tricks... someone who can still keep your project safe and code compliant.
Paolo Benedetti, SWD Aquatic Artist, Watershape Consultant, Expert Witness, International Construction Management
Contact the author at: info@aquatictechnology.com or 408-776-8220
Aquatic Technology Pool and Spa©
"Creating water as art."™ ©www.aquatictechnology.com All rights reserved.
According to the National Electric Code (2011), Section 411.4, low voltage electrical systems cannot be located within 10 feet of a pool, spa or hot tub, even if the transformer is GFCI protected.
This does not mean that using a "pool rated" low voltage transformer allows you to move the lighting closer. It is strictly and clearly prohibited under any condition.
Additionally, low voltage illuminares (fixtures) are usually constructed of metal (aluminum, brass, copper or cast metal). They are not provided with a means to bond them to the swimming pool's bonding grid, since they are over 4 square inches in size.
So, how do you provide landscape lighting within 10 feet of a pool?
Hire someone who knows the tricks... someone who can still keep your project safe and code compliant.
Paolo Benedetti, SWD Aquatic Artist, Watershape Consultant, Expert Witness, International Construction Management
Contact the author at: info@aquatictechnology.com or 408-776-8220
Aquatic Technology Pool and Spa©
"Creating water as art."™ ©www.aquatictechnology.com All rights reserved.
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