Masonry Magazine January 1979 Page.20
3.
Test in accordance with ASTM C 67, with the following additional requirements:
a. If the coefficient of variation of the compression samples tested exceeds 12%, obtain compressive strength by multiplying average compressive strength of specimens by 1-1.5 (100 -0.12) where v is the coefficient of variation of sample tested. Add the following to Section 1.02 in Technical Notes 11A Revised.
C.
Preconstruction Requirements:
1.
Prebid conference:
a. A prebid conference, directed by the Architect/Engineer, will be held one week prior to the bid opening to discuss:
(1) Structural concept.
(2) Method and sequence of masonry construction.
(3) Special masonry details.
(4) Quality control requirements.
(5) Material requirements.
(6) Job organization.
(7) Workmanship.
b. Attendance is mandatory for all prospective:
(1) General contractors.
(2) Masonry subcontractors.
(3) Brick suppliers.
2.
Preconstruction Testing and Certification:
a. After award of the contract, the General Contractor shall:
(1) Within 14 days, submit to the Architect/Engineer for approval the name of the independent laboratory which will perform the site control tests and provide the certificates and test reports required in Section 1.03.
(2) Upon approval of the laboratory, certificates and test reports, and prior to any masonry construction, make arrangements for the following tests:
(a) Brick tests in accordance with preconstruction requirements, Section 1.02.A
(b) Mortar tests in accordance with mortar section.
b. Masonry work can begin only after approval of testing.
c. Testing is acceptable if test results indicate that materials meet the minimum requirements of Part II Products.
d. Cost of preconstruction testing shall be borne by the General Contractor, unless tests indicate that units do not conform to the requirements of the specifications, in which case cost shall be borne by the seller.
3.
Preconstruction Conference:
a. A preconstruction conference, directed by the Architect/Engineer, will be held after the award of the General Contract, but prior to beginning of masonry work to discuss:
(1) Structural concept.
(2) Method and sequence of masonry construction.
(3) Special masonry details.
(4) Standard of workmanship.
(5) Quality control requirements.
(6) Job organization.
1.02.C This requirement may be deleted if not necessary for the project due to bidders being knowledgeable with engineered brick masonry.
1.02.C.1.b Invitation to attend should be extended to others, such as the inspectors (local building department and other government agencies) and Owner.
1.02.C.2 Inspection, laboratory and testing for quality control can be a responsibility of the Structural Engineer. If so, revise section.