February_1971 — Page 34

mean and standard deviation.

27. Retaining wall design

Program will determine all concrete thicknesses, reinforcing requirements, and footing requirements for any given concrete and steel stresses and soil pressure. It uses equivalent fluid soil pressure for level or sloping backfill or surcharge, includes the ability to have the following applied at top of wall, moment, axial load or horizontal force. Designer may specify minumum dimensions, footing location. Output includes factor of safety of overturn-

ing, messages

messages regarding minimum member thickness, wall and footing moments, cut-off points for steel areas, and bar perimeters. 1963 ACI, working stress design.

28. Slope stability analysis

Computation is based Swedish Slip-Circle Method.

29. Abutment design

2208008..

IBM 1130 keyboard.

30. Pier design

This program is mainly intended for a quick and accurate pier analysis. The pier can have two to six columns; on the cannot have intermediate hinges. Any member or members may be prismatic, regularly haunched and tapered, or irregular, The footings may be con- tinuous or isolated with a variable degree of fixity at the base of each column. Loading may be the weight of the pier cap, any vertical or horizontal

Analysis and design of abutment in accordance with AASHO Standard Specification for Highway Bridges 8th edition 1961.

-

forces, or forces due to temperature change or shrinkage.

31.

Civil engineering coordinate geometry (COGO)

This program can be applied to the computation problems involved in: Geometry Type Problems, Highway Alignment, Traverse Closure, Bridge Geometry, Subdivision Layout, Inter- change Design, Land Surveying and Construction Layout.

32

It pays to power with

BRIGGS & STRATTON

4-CYCLE ENGINES

簿

4

CYCLE

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MILWAUKEE, WIS., U.S. A

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MADE IN

USA

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No. 1 in use throughout the world

Builders widely use Briggs & Stratton 4-cycle air-cooled engines to power Concrete Vibrators Water Pumps & other equipment.... this gives you greater assurance of easy starting, ability to take hard knocks, low maintenance cost and longer service life

Far East BUILDER, February 1971