Complete Compiled Specification.pdf - Peck Ormsby Construction

2.03 CONCRETE MASONRY UNITS (CMU)
1) Products: “Luster Seal WB 150,” Euclid Chemical Company
2) Or approved equal.
3) Gloss: Low sheen.
b. Exterior Masonry Products:
1) Hydrozo Enviroseal 20 (20% silane), BASF
2) Aqua-Trete BSM 20
3) Or approved equal.
A. Provide all masonry shapes and sizes as indicated on the drawings. Units to conform to
ASTM C-90, grade N-I. Maximum dimension for cells shall be 3". Block shall have uniform
texture. Weight shall equal 125 pounds or greater and minimum strength of 2000 PSI based
on net area. Weight shall be light weight (105 PCF).
1. Portland Cement: ASTM C-150, Type I.
2. Aggregates: Sand, ASTM C-144, except with not less than 5% (by weight) passing a
No. 8 sieve, and with 95% to 100% (by weight) pass a 3/8" sieve.
B. Provide masonry units of sufficient strength to obtain composite prism strengths of 1,500 psi
compression for hollow units at 28 days.
C. Block Types:
1. Type “1”: 8” high by 16” long nominal, width to match brick wall, for use where not
expose to view and where allowed by structural drawings.
a. Color: Natural gray
2.04 MORTAR AND GROUT MATERIALS
A. Portland Cement: ASTM C-150, Type I or II. Provide natural color or white cement as
required to produce required mortar color.
B. Hydrated Lime: ASTM C-207, Type S.
C. Aggregate for Mortar: ASTM C-144, except for joints less than 1/4 inch use aggregate graded
with 100 percent passing the No. 16 sieve.
D. Aggregate for Grout: ASTM C-404.
E. Water: Potable.
F. Minimum Allowable Strength: 2,600 psi at 28 days.
2.05 MORTAR AND GROUT MIXES
A. General: Do not add admixtures including coloring pigments, air-entraining agents,
accelerators, retarders, water repellent agents, antifreeze compounds, or other admixtures,
unless otherwise indicated.
1. Do not use calcium chloride in mortar or grout.
2. Refer to structural notes for additional requirements.
3. Mortar Color: As selected by Architect. Colors will be selected to coordinate with the
brick colors and may include more than one color.
SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDITION MARCH 2, 2009
UNIT MASONRY 04200-3