Paving Key Elements

Paving Key Elements

Five Key Elements of paving.

  1. Arrow – material of natural soil in place.
  2. Connection plate – a layer of gravel.
  3. The sand bed – a layer of graded sand.
  4. Pavers – of course wearing surface.
  5. Restriction vocal support used in the perimeter of the room.

Paving preparation

  • Decide on the area you want to open.
  • Select the type of pavement, the color and pattern routing.
  • If possible, size and arrangement vary the benefits of using both pavers edge as possible.
  • Check soil conditions to determine whether a sub-base is required.
  • Complete pavement design including drainage and edge retraints.
  • Calculate all the necessary materials.
  • Schedule delivery of materials and equipment.

Drainage with Paving

With paving, as with all types of paving, adequate drainage for a good performance is necessary.

The accumulation of water erosion or soil base material and below the road surface can cause the liquidation and ultimate failure of the road surface. If it is poorly drained area. Basement or devices are often required to remove water from the floor drains drainage Basis.

Experience has also shown that despite the grainy texture of the plaster bedding, it is Low penetration of water through the joints between the blocks and the allocation should also
for surface drainage. It is recommended that all coatings ratings cut 2% (1/4 “per foot) (20mm per meter)

Some accepted methods represented outflows.

Standard installation methods

1 Prepare the surface and then sand bed of the rule.

2 Lay the Pavers.

3 Pieces cut edges.

4 Vibrate pavers to its final size.

5   Of sweep joint sand and vibrate in place.

CONSTRUCTION  NOTICE

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EDGE RESTRAINTS

Various types of edge restraints are illustrated and the choice of which design to use is decided bythe type of loading, life, aesthetic appeal, and cost.

The various types shown have all been used successfully in particular applications

Whenever continuous edge restraints are to be used it is better to install them before paving work begins. In this way the edging can be used for reference levels, and often as a screeding surface for the sand bedding.

If a concrete edge restraint is to be placed after the pavers are in place, care must be taken to ensure that this concrete does not get on to the pavers and cause staining. Protect the pavers with plastic sheeting, it can be trimmed or removed after the concrete has cured.

Timber edge restraints may be bent to form curved edges without cutting. Heavier timbers  may need saw cuts through on the back of the curve to allow the timber to bend. Pegs positioned on the curve control bend until the paving is in place.

BASIS OF PREPARATION AND SEARCH

Search any inappropriate materials and surplus – to design levels . In the absence of the sub -base of the application is , weThe depth should be 3-1/2 ” (90 mm) below the level of the ground pour 2-3/8″ (60 mm) glass block and 4-1/4 ” (110mm) below the level of the ground pour 3-1/8 ” (80 mm) glass block .

If the sub-base is required, high level will be compacted sub- base.

You compactor compaction equipment subcategory With Necessary pay achieve specified Density application, pay the costs of Concepcion .
Place sub – base sofas Do not exceed 6 “( 150 mm) and compact density of the design.

Is it important for me is to remind Causeway finished surface profile will closely the sub- base. Hollow and the head of the sub – emit ET Creux heads freely Correspondents Finished her work in . Cut surface sub-base shall be within 3/8 ” (10 mm ) of the
Profile Design .

SAND BEDDING
DELIVERY

The sand used for bedding should meet the recommended grading limits. Generally, any sand suited for concrete manufacture is acceptable for bedding.

It should contain enough moisture to cling together when compressed lightly in the hand and not fall apart when the hand is re-opened. Sand which is too wet will not screed properly while sand which is to dry will not compact.

Sand is usually delivered to the job site in large bulk loads. Whenever possible sand should be unloaded in small piles spaced over the area to be paved in order to minimize further handling.Unless alternative success is available, enough sand should be stockpiled ahead of the paving to avoid delivery over the laying face.

CONCRETE  SCREEDING

This operation provides the sand bed in which the pavers are placed and is very important for the quality of the finished pavement.

The depth of the sand should be adjusted according to the amount of sand is compacted down when it vibrates the pavement. To determine this depth , place a pile of bedding sand on the floor and spread to approximately 1-1/2 “(45 mm ) thickness required . Place in this arena one paver and measure the height from the floor to the top surface of the paver.
with a rubber mallet with short, sharp , as if using a vibrator hits. When setting the paver stops down on the sand, the measurement from the floor to the top surface again checked.The must be different between the two measurements is the rate of compaction of the sand and called Pay ‘ .
The actual depth of sand necessary prior to compacting states now adding the thickness of the paver , the thickness of sand bed (usually 1 ” (30 mm ) ) and surcharge.

Levels should be checked regularly as which is appropriate. If levels change due to variation in the the sand type or moisture content, then the payment will change and cobbles may have to be raised and raked sand and re screed to new levels before is re-inst.

LEVELS

Levels for the bedding sand are set with string line stretched between the Edge and Other Restrictions Existing surfaces , or para Levels established PREPARATION OF THE HEIGHT of the sub – base.

Screed rails or beams positioned themselves along the Bass Line Cord and Support 3 cakes (1 meter) Intervals portion small piles of sand. The use of a paver check rail height flush to line Chain With descuento para because the Fair Pay Determined . Height Adjustment Guide screed adding A Little More Sand para EVERY battery or lot Rail Working down in the sand. When the height of match With paver thickness more charges , the more than 1 inch (30 mm), pack the sand Under and Around Guide Flush With Fingers Until EVERY hand leaning on the rail itself do Any Length , Good Support within and along the channel EVERY flush placement prevents movement WHEN do , and therefore prevents lot depressions and incorrect levels in the pavement.

The paver USE , CAN return to the heights of the para flush Guide That sure have not moved , while placing a su Around sand . Now , sand Syndicate About the area of ​​a flush be , but only about 3 cakes (1 meter) In Front. In Other Words , The Distance That You Can Achieve portion sin kneel and therefore compaction of the sand. Using A Rigid straight board (2 ” x 4″ ) , which spans the distance between Rails for leveling , level sand lot drawing master table Directly TO YOU . See- sawingThe Board is Slower and cause uneven compaction of the sand bed . As small pockets or holesappear behind the rule, take more sand lost in the area and rescreed . Loose or improperlyCompacted areas should be treated the same

Too much sand in front of the screed board will cause the board to bend which in turn will produce a cambered surface. It is better to take two or three passes with the screed board to ensure a true surface, flat and evenly compacted.

Watch for movement of the screeding rails as work progresses. If movement occurs, recheck the levels and adjust and repack the rails.
When screeding up to a fixed edge, check that the sand is properly filled and screeded in the corners. Hollow spots or bridging can occur and will result in the pavement settling lower than desired on the edges after vibrating.

Excess sand left along edges and against walls by the screeding board is best removed with a steel float or trowel. A steel float is handy to slip under the excess, remove it and then smooth out any irregularities.

When the area to be screeded is wider than the screeded board, the board can be cantilevered over one screed rail to level the outlying areas. One man holds the screed board tight onto the screed rails and draws it along while the second man holds the opposite end level with the alreadyscreeded area. When screeding up to existing edge restraints, curbs or side walks surfaces should be checked for levels. It may be necessary to adjust sand levels locally to ensure the paving finishes and blends with the edging.