Paradise views landscaping

Thursday, December 23, 2010

Listing for Toronto Landscaping

Check out our featured listing on viesearch    http://viesearch.com/451900

Monday, December 13, 2010

facebook pages

facebook pages give us a thumbs up click here http://www.facebook.com/pages/Paradise-views-landscaping/54224884821?v=photos

Thursday, December 2, 2010

flicker

check out some more photos from http://www.flickr.com/photos/paradiseviewslandscaping/

Toronto landscaping information page

Paradise views landscaping
Visit our new customer information website, where customers can ask questions related to landscape design build projects and get anwsers or suggestions via email, including specs and proper procedures to better educate them selves. there are many ways of doing things but not all of them are correct, get suggestions from a professional at no cost all services are free, just visit www.torontolandscaping.info 
ask questions via info form and leave your email info and we will get back to you A.S.A.P. for design ideas visit www.paradiseviewslandscaping.com

Thursday, November 4, 2010

Toronto landscaping follow on Twitter or face book pages

Paradise views landscaping is now on twitter and facebook pages check it out for comments and ideas, see more photos and inside info on mike dasilva, owner of paradise views landscaping. Toronto Landscaping design build contractors complete residential commercial garden landscaping construction company stone backyard frontyard interlocking snow removal services Ontario.

Tuesday, November 2, 2010

Toronto landscaping project 141 boardwalk toronto, ontario, the beaches

Frontyard and backyard design build project
This project was done in October 2010. It was designed for a couple living in the beaches just moving into their house with many other projects going on to renovate the home to their liking. I was one of three landscapers to give a design and quote, they choose Paradise views Landscaping because my ideas were fitting with the home and i was quick to get back with a design for them at no charge. They found my company through a google search under the heading Toronto landscaping and were very impressed with my designs and quality of work, i found this very encouraging considering they have a media company that specializes in web design, and i created my website by myself.
This project included interlock, flagstone, retaining walls, flagstone, deck, and trellis you will find that all combined they are very appealing and give a certain feeling in which the customer liked, she had given me certain expectations of what she wanted to get out of this space, and expressed that she was vary satisfied with the end result.
Frontyard

                             
Backyard landscaping
So if you like contractors you can count on to get what you want call mike from Paradise views landscaping
and he will make it happen on shedule

Saturday, October 9, 2010

comments on service with Paradise views landscaping

Paradise views Landscaping now booking for snow removal contracts 2010-2011
Call mike 416-560-9501        

Thursday, July 29, 2010

Toronto snow removal


Paradise views Landscaping and snow removal
Service includes prompt timing and we spend the time clean up curbs to insure room for the next snow fall.
snow removal with bobcat after snow clearing is complete or relocation of snow to reduce snow banks that could potentially obstruct view of traffic or pedestrian
Full salting services with all inclusive packages for commercial condo and industrial sites. We are on the ball with the salting, who can afford to take chances when lives are at stake.
www.paradiseviewslandscaping.com


Sunday, July 25, 2010

Paradice views Landscaping


We are now booking snow contracts now please contact us soon for free estimate
Toronto Snow removal

Friday, July 16, 2010

Toronto retaining walls specs and info Unilock


DURA-HOLD2® CRIB RETAINING
WALL INSTALLATION
SPECIFICATIONS
Prepared by Risi Stone Systems – Used by
permission.
1-800-UNILOCK www.unilock.com
Dura-Hold2® Crib Retaining Wall
Unilock Specifications Page 2
FOREWORD
This outline specification has been prepared for the general guidance of specifiers,
engineers, contractors and superintendents associated with the construction of Dura-
Hold2® Crib Retaining Wall. A qualified engineer must determine the suitability of the
design, confirm site conditions and monitor the installation in critical applications.
CROSS SECTION EXAMPLES
A comprehensive compilation of specific retaining wall scenarios can be found at
www.unilock.com. Also, under the Design Professional Resources section is the
Risiwall software program, which can be used for site specific analysis for most
Unilock® retaining wall systems.
Call 1-800-UNILOCK for engineering assistance.
Dura-Hold2® Crib Retaining Wall
Unilock Specifications Page 3
DURA-HOLD2® CRIB RETAINING WALL INSTALLATION
SPECIFICATION
SECTION 02832- CONCRETE SEGMENTAL RETAINING WALL
PART 1 GENERAL
1.1. Description
A. The work covered by this section includes the furnishing of all labour, materials,
equipment and incidentals for the design, inspection and construction of a modular
concrete retaining wall including the drainage system as shown on the
Construction Drawings and as described by the Contract Specifications. The work
included in this section consists of, but is not limited, to the following:
1. Design, inspection and certification by a registered professional engineer.
2. Excavation and foundation soil preparation.
3. Furnishing and placement of the levelling base.
4. Furnishing and placement of the drainage system.
5. Furnishing and placement of geotextiles.
6. Furnishing and placement of segmental retaining wall facing units and
tiebacks.
7. Furnishing and compaction of infill, drainage and retained soils.
1.2. Related Work
A. Section 02100 - Site Preparation
B. Section 02200 - Earthwork
1.3. Reference Standards
A. Engineering Design
1. NCMA Design Manual for Segmental Retaining Walls, Second Edition.
2. NCMA TEK 2-4 - Specifications for Segmental Retaining Wall Units.
3. NCMA SRWU-2 - Determination of Shear Strength between Segmental
Concrete Units.
B. Segmental Retaining Wall Units
1. ASTM C 140 - Sampling and Testing Concrete Masonry Units
2. ASTM C 1262 - Evaluating the Freeze - Thaw Durability of Manufactured
Concrete Masonry Units and Related Concrete Units.
3. ASTM C 33 - Specification for Concrete Aggregates
Dura-Hold2® Crib Retaining Wall
Unilock Specifications Page 4
4. ASTM C 90 - Standard Specification for Load-Bearing Concrete Masonry
Units
5. ASTM C 150- Specification for Portland Cement
6. ASTM C 595 - Specification for Blended Hydraulic Cements
C. Geotextile Filter
1. ASTM D 4751 - Standard Test Method for Apparent Opening Size
D. Soils
1. ASTM D 698 - Moisture Density Relationship for Soils, Standard Method
2. ASTM D 422 - Gradation of Soils
3. ASTM D 424 - Atterberg Limits of Soils
4. ASTM D G51 - Soil pH
E. Drainage Pipe
1. ASTM D 3034 - Specification for Polyvinyl Chloride (PVC) Plastic Pipe
2. ASTM D 1248 - Specification for Corrugated Plastic Pipe
F. Where specifications and reference documents conflict, the Owner's Engineer shall
make the final determination of applicable document.
1.4. Approved Products
A. Dura-Hold2® Segmental Crib Retaining Wall System as supplied by Unilock®
Unilock® Location (Address, Phone, Fax) ___________________________
B. Color to be [_______].
1.5. The Contractor
A. The term Contractor shall refer to the individual or firm who will be installing the
retaining wall.
B. The Contractor must have the necessary experience for the project and have
successfully completed projects of similar scope and size.
1.6. Delivery, Material Handling and Storage
A. The installing contractor shall check all materials delivered to the site to ensure
that the correct materials have been received and are in good condition.
B. The Contractor shall store and handle all materials in accordance with Unilock’s
recommendations and in a manner to prevent deterioration or damage due to
moisture, temperature changes, contaminants, breaking, chipping or other causes.
1.7. Engineering Design and Certification
A. The term Engineer shall refer to the individuals or firms who have been retained by
the Contractor to provide design and inspection services for the retaining wall. The
Design Engineer may be a different individual or firm from the Inspecting Engineer
Dura-Hold2® Crib Retaining Wall
Unilock Specifications Page 5
as Unilock® may provide this service. The Engineer(s) must be qualified in the area
of segmental retaining wall design and construction and must be licensed to
practice engineering in the Province or State that the wall is to be constructed.
B. The Engineer(s) will perform the following tasks:
1. Produce sealed construction drawings and detailed design calculations,
completed in accordance with the design requirements outlined in Part 3 of
these specifications.
2. Review the site soil and geometric conditions to ensure the designed wall is
compatible with the site prior to construction.
3. Inspect the site conditions, materials incorporated into the retaining wall, and
the construction practices used during the construction.
4. Provide the Contractor with a letter after completion, certifying the design
meets the requirements of this specification, the design was compatible with
the site and the wall was constructed according to design.
1.8. Submittals
A. The Contractor shall submit the following information for approval thirty (30) days
prior to the construction of the segmental retaining wall.
1. Design Submittal – Provide three (3) sets of stamped construction drawings
and detailed design calculations, completed and sealed by the Engineer in
accordance with the design requirements outlined in Part 3 of this
specification.
2. Materials Submittal – Manufacturer’s certifications, stating that the SRW units
and imported aggregates and soils meet the requirements of this specification
and the Engineer’s design.
3. Installer Qualifications - The Contractor must be able to demonstrate that their
field construction supervisor has the necessary experience for the project by
providing documentation showing that they have successfully completed
projects of similar scope and size.
1.9. Measurement for Payment
A. Payment for earthworks to prepare the site for the retaining wall construction will
be based on the contract unit price per cubic meter (or cubic yard) for site cut and
fill earthwork as detailed in the Site Plan. Additional earthwork as directed and
approved in writing by the Owner, or Owner’s representative, shall be paid for
under a separate pay item.
B. Payment for the retaining wall system will be based on the contract price per
square meter (or square foot) of vertical wall face area as shown on the
construction drawings. The vertical wall face area shall be measured from the top
of the base or footing to the top of the coping course multiplied by the length of the
wall. The contract unit price shall include the cost of all engineering, labor,
materials, and equipment used to install the leveling base or spread footing, wall
modules, drainage materials, infill soil, retained soil and site clean up. Additional
Dura-Hold2® Crib Retaining Wall
Unilock Specifications Page 6
items as directed and approved in writing by the Owner, or Owner’s representative,
shall be paid for under a separate pay item.
PART 2 MATERIALS
2.1. Definitions
A. Modular concrete retaining wall units are dry-cast solid concrete units that form the
external fascia and semi-crib structure (including tie-backs and rear wall) of a
modular unit crib retaining wall system.
B. Coping units are the last course of concrete units used to finish the top of the wall.
C. Infill soil is specified material that is placed within the semi-crib structure.
D. Retained soil is an in-situ soil or a specified soil that is placed behind the back wall
of the semi-crib structure.
E. Foundation soil is the in-situ soil beneath the wall structure.
F. Drainage aggregate is a free draining soil with natural soil filtering capabilities, or a
free draining soil encapsulated in a suitable geotextile, or a combination of free
draining soil and perforated pipe all wrapped in a geotextile, placed directly behind
the back wall of the semi-crib structure.
G. Drainage pipe is a perforated polyethylene pipe used to carry water, collected at
the base of the retaining wall, to outlets in order to prevent pore water pressures
from building up behind the wall facing modules.
H. Non-woven geotextiles are permeable synthetic fabrics formed from a random
arrangement of fibers in a planar structure. They allow the passage of water from
one soil medium to another while preventing the migration of fine particles that
might clog a drainage medium.
I. All values stated in metric units shall be considered as accurate. Values in
parenthesis stated in imperial units are the nominal equivalents.
2.2. Products
A. Concrete Segmental Retaining Wall Units
1. The standard concrete wall modules shall be 305 x 1830 x 355 mm (12 x 72 x
14 inches). The concrete tie-back wall modules shall be 305 x 355 x 1830
mm (12 x 14 x 72 inches). The units have a maximum tolerance of plus or
minus 3 mm (1/8 inch) for each dimension.
2. The retaining wall modules shall be solid units and have a minimum weight of
480 kg (1050 lbs.) per unit.
3. The concrete wall modules shall have a integral shear key connection that
shall be offset to permit a minimum wall batter of 1H : 8V.
4. The concrete wall modules shall have a minimum 28-day compressive
strength of 35 MPa (5000 psi) as tested in accordance with ASTM C 140. The
Dura-Hold2® Crib Retaining Wall
Unilock Specifications Page 7
concrete shall have a maximum moisture absorption rate of 5 percent to
ensure adequate freeze-thaw protection.
5. The concrete tie-back wall modules shall be reinforced with two (2) 10M (3/8
inch diameter), grade No.60 steel reinforcing bars with a minimum of 100mm
(4 inches) of concrete cover. Placement of the bars shall be as per
Manufacturer’s details
B. Infill Soil
1. The infill soil shall consist of free draining sands or gravels with less than 5%
passing the #200 sieve size or as specified in the Construction Drawings.
2. The Engineer shall review and determine the suitability of the wall infill soil at
the time of construction.
C. Retained Soil
1. The retained soil shall be on site soils unless specified otherwise in the
Construction Specifications or as directed by the Owner’s Representative. If
imported fill is required, it shall be examined and approved by the Engineer.
D. Foundation Soil
1. The foundation soil shall be the native undisturbed on site soils. The
foundation soil shall be examined and approval by the Engineer prior to the
placement of the base material.
E. Leveling Base Material
1. The footing material shall be non-frost susceptible, well graded compacted
crushed stone (GW-Unified Soil Classification System), or a concrete leveling
base, or as shown on the Construction Drawings.
F. Drainage Soil
1. The drainage soil shall be a free draining angular granular material of uniform
particle size smaller than 25 mm (1 inch) separated from the infill soil or
retained soil by a geotextile filter. The drainage soil shall be installed directly
behind the SRW units if the infill soil is unable to provide adequate drainage
capacity.
G. Drainage Pipe
1. The drainage pipe shall be perforated corrugated HDPE or PVC pipe, with a
minimum diameter of 100 mm (4 inches), protected by a geotextile filter to
prevent the migration of soil particles into the pipe, or as specified on the
construction drawings.
H. Geotextile Filter
1. The non-woven geotextile shall be installed as specified on the construction
drawings. Although selection of the appropriate geotextile specifications is
site soil specific, a commonly used geotextile for filtration will have an
Apparent Opening Size ranging between 0.149 and 0.210 mm (U.S. Sieve
Sizes 100 to 70) and a minimum unit weight of 135 grams per square meter
Dura-Hold2® Crib Retaining Wall
Unilock Specifications Page 8
(4.0 oz /square yard). The coefficient of permeability will typically range
between 0.1 and 0.3 cm/second.
PART 3 WALL DESIGN
3.1. Design Standard
A. The Design Engineer is responsible for providing a design that shall consider the
external stability, internal stability, and local stability of the SRW System. It is the
responsibility of the Certifying Engineer or Site Geotechnical Engineer to determine
if further design considerations must be implemented to ensure adequate
global/overall slope stability, and/or, if the foundation soils will require special
treatment to control total and differential settlement. The design life of the
structure shall be 75 years unless otherwise specified in the construction drawings.
B. The segmental retaining wall shall be designed in accordance with
recommendations of the NCMA Design Manual for Segmental Retaining Walls,
Second Edition. The following is a summary of the minimum factors of safety for
the various modes of failure evaluated in the proposed design.
External Stability
Base Sliding 1.5
Overturning 1.5
Bearing Capacity 2.0
Global Stability 1.3
Internal Stability
Shear Capacity 1.5
3.2. Soil
A. Design parameters: The following soil parameters shall be assumed for the design
unless otherwise shown on the plans or specified by the Engineer.
Infill Soil:
Unit Weight = [________] kN/m3 (lb/ft3)
Friction Angle = [________] deg
Cohesion = 0 kPa (lb/sq.ft)
Retained Soil:
Unit Weight = [________] kN/m3 (lb/ft3)
Friction Angle = [________] deg
Cohesion = 0 kPa (lb/sq.ft)
Dura-Hold2® Crib Retaining Wall
Unilock Specifications Page 9
Foundation Soil:
Unit Weight = [________] kN/m3 (lb/ft3)
Friction Angle = [________] deg
Cohesion = 0 kPa (lb/sq.ft)
3.3. Design Geometry
A. The length, height, and overall elevations of the retaining wall must comply with the
requirements of the proposed elevation detail, station information and site grading
plan.
B. The structures' design height, H, shall be measured from the top of the leveling
pad to the top of the wall where ground surface intercepts the wall facing.
C. Slopes above and below all sections of the segmental retaining wall are detailed in
the site grading plan.
D. The minimum wall embedment shall be the greater of:
1. The height of a SRW unit,
2. 150 mm (0.5 ft) or,
3. The minimum embedment required because of the slope below the wall:
Slope Below Wall Minimum Embedment
Level H/10
3 : 1 (18.4 deg) H/10
2 : 1 (26.5 deg) H/7
E. The following surcharges shall be applied to the top of each design cross section
based on the following proposed uses above the wall.
Use Above Wall Minimum Surcharge
No Traffic 0 kPa (0 lb/sq. ft)
Light Traffic 4.8 kPa (100 lb/sq. ft)
Heavy Traffic 12.0 kPa (250 lb/sq. ft)
3.4. State of Stress
A. The lateral earth pressure to be resisted by the composite weight of the semi-crib
structure and infill soil shall be calculated using the Coulomb coefficient of earth
pressure, Ka, times the vertical stress at the base of the wall. The coefficient of
active earth pressure, Ka, shall be used from the top to the bottom of the wall. The
coefficient of active earth pressure, Ka, shall be assumed independent of all
external loads except sloping fills. For sloping fills, the coefficient of active earth
Dura-Hold2® Crib Retaining Wall
Unilock Specifications Page 10
pressure, Ka, appropriate for the sloping condition, using Coulomb earth pressure
shall be used in the analysis.
3.5. Inclination of Failure Surface
A. A Coulomb failure surface passing through the base of the wall behind the tie-back
units up to the ground surface at or above the top of wall shall be assumed in
design of walls.
3.6. Settlement Control
A. It is the responsibility of the Certifying Engineer or Site Geotechnical Engineer to
determine if the foundation soils will require special treatment to control total and
differential settlement.
3.7. Global Stability
A. It is the responsibility of the Certifying Engineer or Site Geotechnical Engineer to
determine if further design considerations must be implemented to ensure
adequate global/overall slope stability.
PART 4 CONSTRUCTION
4.1. Inspection
A. The Engineer is responsible for verifying that the contractor meets all the
requirements of the specification. This includes the use of approved materials and
their proper installation.
B. The Contractor's field construction supervisor shall have demonstrated experience
and be qualified to direct all work related to the retaining wall construction.
4.2. Construction Tolerances
A. The following tolerances are the maximum allowable deviation from the planned
construction
Vertical Control: +/- 1.25 inches over a 10 ft distance, +/- 3 inches total
Horizontal Control: +/- 1.25 inches over a 10 ft distance, +/- 3 inches total
Rotation: +/- 2 deg from planned wall batter
Bulging: 1.0 inch over a 10 ft distance
4.3. Site Preparation
A. The foundation soil shall be excavated or filled as required to the grades and
dimensions shown on the Construction Drawings or as directed by the Owner or
Owner’s Representative.
B. The foundation soil shall be proof rolled and examined by the Engineer to ensure
that it meets the minimum strength requirements according to the design
assumptions. If unacceptable foundation soil is encountered, the contractor shall
Dura-Hold2® Crib Retaining Wall
Unilock Specifications Page 11
excavate the affected areas and replace with suitable quality material under the
direction of the Engineer.
C. In cut situations, the native soil shall be excavated to the lines and grades shown
on the Construction Drawings and removed from the site or stockpiled for reuse as
retained soil.
4.4. Installing Drainage System
A. The approved non-woven geotextile shall be set against the back of the first
retaining wall unit at the back of the semi-crib structure and extended towards the
back of the excavation, up the excavation face and back over the top of the semicrib
structure / infill soil to the retaining wall fascia, or as shown in the Construction
Drawings.
B. The drainage pipe shall be placed behind the leveling base, or lower course of
facing units as shown in the Construction Drawings or as directed by the Engineer.
The pipe shall be laid at a minimum gradient of 2% to ensure adequate drainage to
free outlets.
C. T - Sections and outlet pipes shall be installed on the drainage pipe at 15 m (50 ft.)
centers or as shown on the Construction Drawings.
D. The remaining length of geotextile shall be pulled taut and pinned over the face of
the retained soil. Geotextile overlaps shall be a minimum of 300 mm (1 ft.) and
shall be shingled down the face of the excavation in order to prevent the infiltration
of retained soil into the wall infill.
4.5. Leveling Base or Spread Footing Placement
A. The leveling base material shall be crushed stone compacted to 98% Standard
Proctor Density, or vibrated concrete along the grades and dimensions shown on
the Construction Drawings or as directed by the Engineer. The minimum thickness
of the leveling base shall be 305 mm (12 inches).
4.6. Installation of Modular Concrete Retaining Wall Units
A. The bottom row of retaining wall modules shall be placed on the prepared leveling
base as shown on the Construction Drawings. Care shall be taken to ensure that
the wall modules are aligned properly, leveled from side to side and front to back
and are in complete contact with the base material.
B. The tie-back wall modules shall be installed perpendicular to the base course on
2440 mm (96 inches) centers, separated by standard wall modules to form the
front and rear wall of the semi-crib structure. The tie-back modules are aligned
vertically on every other course up to the gravity portion of the wall, as determined
by the design. Standard and tie-back modules above the bottom course shall be
placed such that the tongue and grove arrangement provides the design batter (i.e.
setback) of the wall face. Successive courses shall be placed to create a running
bond pattern with the edge of all units being approximately aligned with the middle
of the unit in the course below it. Infill material underlying tie-back units shall be
Dura-Hold2® Crib Retaining Wall
Unilock Specifications Page 12
compacted with hand operated compaction equipment ensuring that the tie-back
modules are in full contact with the infill material.
C. The wall modules shall be swept clean before placing additional levels to ensure
that no dirt, concrete or other foreign materials become lodged between
successive lifts of the wall modules.
D. A maximum of 3 courses of wall units can be placed above the level of the infill soil
at any time.
E. The contractor shall check the level of wall modules with each lift to ensure that no
gaps are formed between successive lifts.
F. Care shall be taken to ensure that the wall modules are not broken or damaged
during handling and placement.
4.7. Drainage Soil
A. The drainage soil will be placed behind the back wall with a minimum width of 300
mm (1 ft.) and separated from other soils using the approved non-woven
geotextile.
B. Drainage soil shall be placed behind the wall facing in maximum lifts of 6 inches
and compacted to a minimum density of 95% Standard Proctor.
C. No heavy compaction equipment shall be allowed within 1 meter (3 ft.) of the back
of the crib system.
4.8. Infill Soil
A. Wall infill soil shall be placed within the semi-crib structure in maximum lifts of 150
mm (6 inches) and compacted to a minimum density of 95% Standard Proctor.
B. Wall infill soil shall be compacted in and around the tieback modules with hand
operated compaction equipment ensuring that the tie-back modules are in full
contact with the underlying infill soil.
C. No construction equipment shall be allowed to operate directly on top of the tieback
units. No heavy equipment shall be allowed within 1 meter (3 ft.) of the back
of the crib system.
4.9. Retained Soil
A. Retained soils shall be placed and compacted behind the semi-crib structure and
drainage layer in maximum lift thickness of 150 mm (6 inches). The retained soils
shall be undisturbed native material or engineered fill compacted to a minimum
density of 95% Standard Proctor.
B. No heavy compaction equipment shall be allowed within 1 m (3 ft.) of the back of
the wall modules.
4.10. Finishing Wall
A. Items 4.5 to 4.9 shall be repeated until the grades indicated on the Construction
Drawings are achieved.
Dura-Hold2® Crib Retaining Wall
Unilock Specifications Page 13
B. Coping units shall be secured to the top of the wall with two 10 mm (3/8 inch)
beads of the approved flexible concrete adhesive positioned 50mm (2 inches) in
front and behind the tongue of the last course of retaining wall units.
C. Finish grading above the wall to direct surface run off water away from the
segmental retaining wall. Use a soil with a low permeability to restrict the rate of
water infiltration into the retaining wall structure.
END OF SECTION