Masonry Magazine September 1979 Page. 20
Fine Grout and Grouting Procedures
a. Fine grout: Not more than 64 times the least clear dimension of grout space.
b. Not to exceed height of 12 ft. (3.7 m).
9. Do not place grout until the entire wall has been in place 3 days.
10. Vibrate or agitate grout during and after placement to insure complete filling of grout space.
11. Stop grout 1 1/2 in. (38 mm) below top of masonry:
a. If grouting is stopped for 1 hr. or more.
b. Except when completing grouting of finished wall.
12. Provide grout blocks at convenient intervals to meet project requirements.
3.06 CLEANING:
A. Cut out any defective joints and holes in exposed masonry and repoint with mortar.
B. Clean all exposed unglazed masonry:
1. Apply cleaning agent to sample wall area of 20 sq. ft. (2 m²) in location acceptable to the Architect/Engineer.
2. Do not proceed with cleaning until sample area is approved by Architect/Engineer.
3. Clean initially with stiff brushes and water.
4. When cleaning agent is required:
a. Follow brick manufacturer's recommendations.
b. Thoroughly wet surface of masonry on which no green efflorescence appears.
c. Scrub with acceptable cleaning agent.
d. Immediately rinse with clear water.
e. Do small sections at a time.
f. Work from top to bottom.
g. Protect all sash, metal lintels and other corrodible parts when masonry is cleaned with acid solution.
h. Remove green efflorescence in accordance with brick manufacturer's recommendations.
3.06 Additional Notes
If care is taken during laying and the wall is acceptable, the requirements of this section can be deleted.