Technical Specifications - UNDP

1 General
SECTION: 4
NATURAL STONE WORKS
Contractor must submit two sets of each type of stone, full size units as selected by the Supervising
Engineer to the project site, in sufficient number to indicate the full range of color, texture and each type of
the full range of color, texture and each type of finish. One of each of the duplicate samples approved by
the Engineer, the other being returned to the stone supplier ,for his guidance. Colors and types of stone –
dressings are as mentioned under part 2- Products, paragraph B, "Stone Schedule".
The following physical data on all proposed stone shall be submitted y the supplier :-
1. Analysis of mineral composition .
2. Analysis of chemical composition .
3. Thermal sufficient of expansion .
4. Absorption
5. Specific Gravity .
6. Modulus of Rupture
7. Abrasion Resistance .
Anchors : Two of each type to be incorporated in the work .
Submit samples of other materials specified herein upon request by the Engineer .
2 MOCK UP
1. Furnish and install a typical stone wall, application required for the project at area designated by the
Engineer. The panel shall be constructed for Engineer's approval showing 2.0m long x 1.5m high for wall
installation . Wall installation shall include a corner condition indicating a jamb, sill, lintel and coping
stones, etc., as shall be instructed by the Supervising Engineer.
2. All work shall include setting and jointing of all stone including final cleaning as specified here in for
the actual work and as required for approval Construct as many mock-ups until approval by the Engineer
has obtained .
3. The approved mock-up shall constitute the quality of work to be expected throughout the entire project,
and shall remain in place for visual inspection until no longer needed as directed by the Engineer. The
removal and disposition of the moc-ups shall be done by the Contractor at his expense without additional
cost to the owner .
GUARANTEE / WARRANTY
Attention is directed to the provisions of the CONDITIONS OF THE CONTRACT regarding guarantees /
warranties for the Work .
All warranties / guarantees to be issued by the Supplier, Manufacturers and sub-contractors shall be
counter-signed by Main Contractor and both of them will be liable for repair / replace the items / works,
etc., during the warrantee / guarantee period.
STANDARDS
A. Applicable provisions of the following standard publications shall apply throughout the work :
1. Building stone Institute : "Recommended Practices for the use of Natural Stones in Building
Constructions" .
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