Masonry Magazine April 1970 Page. 20
This Lull 4D3 High-Lift can give you up to 20 more working days a year.
Down days due to mud, slush, and snow are practically a thing of the past.
A Lull 4D3 can plow through just about anything, in just about any kind of weather, to put materials where they belong so work can go on. Many contractors report up to 20 more working days per year.. and that means 20 more days profit. You can't beat that.
• Gives you safe, fast, level material handling on uneven ground
• 4 wheel steering
• 4 wheel brakes
• 46" transverse action
• Lifts up to 5,000 lbs.-3,000 lbs. up to 40 high
The Lull 4D3 is the safest High-Lift you can buy. The High-Lift made to help you make more.
LULL ENGINEERING COMPANY, INC.
3045 HIGHWAY 13 ST. PAUL, MINNESOTA 55111
for over 30 years
The best way to find out what a Lull 4D3 can do for you is to see for yourself what a Lull can do. Your Lull Distributor will arrange a demonstration at your convenience.
Books...
From the Space Age to the Carriage Age. By Joseph Bell and contributors. 166 pp. Indexed and illustrated. Hard-bound cover. $12.95.
This latest work by the National Concrete Masonry Association traces the birth and growth of the concrete masonry industry. Illustrated with many vintage photos from the early days of the masonry field as well as a gallery of modern concrete masonry bulidings, the book makes interesting reading for anyone engaged in the masonry or allied trades.
In addition to history, the work also delves into a number of technical subjects, such as concrete masonry machinery, specifications, autoclave and low-pressure curing, lightweight aggregates, transportation and handling.
Copies may be ordered from the publisher, NCMA, 2009 Fourteenth St., North, Arlington, Va. 22201.
American National Standard A10-6-1969 Safety Requirements for Demolition. By American National Standards Institute, Inc. 15 pp. Indexed. $3.25.
This updated reference is intended as a guide to aid the manufacturer, the consumer and the general public. The present standard is one of the new A10 series of standards on safety in building construction, which was initiated November 7, 1958, with the National Safety Council as sponsor.
Covered in the new work are such topics as preparatory operations, public and other ground-level protection, chutes, warning devices, removal of walls, masonry sections and chimneys, stairs, passageways and ladders, storage, and catch platforms. About 20 categories in all are covered.
Order from the publisher, American National Standards Institute, Inc. 1430 Broadway, New York, N.Y. 10018.
The sixth of a series of research reports on structural lightweight aggregate concrete has been published by the Portland Cement Association.
Fly Ash Aggregate Lightweight Concrete, by D. W. Pfeifer, describes laboratory tests performed by the Portland Cement Association to determine the physical properties of four (Continued on page 25)
masonry • April, 1970