METHOD OF STATEMENT FOR INTERLOCKING BLOCK AND CURB STONE

METHOD OF STATEMENT FOR INTERLOCKING BLOCK AND CURB STONE

Summary:   This Method of Statement applies to the following;

• Materials for Application;
• Pre-Cast Curb Stone Transmittal #C-0051Rev.1
•  Interlocking Block, Transmittal # C-0052
• Aggregate Sub-base & Base Coarse
• Geotextile, Separation Layer-Geotextile Fabric 140 Transmittal # C-0047Rev.1
• Mortar
• Soil Sterilizer

 1. Delivery, Storage and Handling:  

1. After the material samples have been approved, all materials shall be delivered to site in the manufacturer’s original unopened containers and packages with seals unbroken and labels intact and shall be stored in a dry place. Materials such as cements, which are partially caked, the containers for which show water stain or which are damaged or unsuitable for use shall be removed from site.
2. Damaged curbs shall not be allowed to be used so that precautionary measures shall be undertaken to prevent racking, chipping or other damage during unloading and storage at the site. Any damage curb installed shall be immediately removed from the site and replaced with a new material.
3. The work shall be coordinated with other sections of work which adjoins other materials before installation of the material herein.

2. Installation: 

• Curb:

1. Set lay-out for curb stone according to plan with reference to lines and grades.
2. The base coarse shall be compacted to attain sufficient compaction prior to its final placement.
3. Set curbs in full bed of mortar that it will be stable and can resist lateral force exerted by the adjoining elevated interlocking blocks.
4. The joint of the curb stone shall be spaced for at least 10 mm and the same will be filled with mortar so that there will be no lack of bond between adjoining curb.  

• Interlocking Blocks

1. Prepare sub grade for the installation of the interlocking blocks. Any soft soils shall be removed so that it will not create unstable foundation.

               B. Place aggregate sub base and base as indicated in the plan.

                   Compact by tamping with rubber mallet and screed to depth

                    required to allow setting of pavers.

               C. Place geotextile over compacted base course, overlapping ends

                    and edges at least 300 mm.

               D. Place leveling course and screed to a thickness of 25-38 mm,

                   taking care that moisture content remains constant and density

                   is loose and constant unit pavers are set and compacted.

               E. Treat leveling base with soil sterilizer to inhibit growth of grass

                    and weeds.

               F. Set pavers with minimum joint width of 1.6 mm and maximum

                    of 3 mm, being careful not to disturb leveling base. If pavers

                    have spacer bars, place pavers hand tight against spacer bars.

                    Using string lines to keep straight lines. Fill gaps between units

                    not to exceed 10 mm with pieces cut from full size unit pavers.

               G. Spread dry sand and fill joints pavers, vibrate pavers and add 

                    sand until joints are completely filled, remove excess sand.

                H. Do not allow traffic on installed pavers until sand has been

                      vibrated  into joints.

3. Cleaning and Protection:

1. Remove and replace unit pavers that are loose, chipped, broken,                              

stained or otherwise damaged or that do not match adjoining units as intended.

• Protect the finished work from damage until substantial completion.

At the end of each day of work, remove from the site rubbish and debris resulting from this work