APPENDIX D

Design stresses, unit loadings, and stability factors:

Spillway and Outlet Works

The stability factors, loadings, and stresses used in the design of various components of the spillway and outlet works were as follows:

Design of all concrete structures was based on concrete of 3,000 pounds per square inch compressive strength at 28 days and a modular ratio of 10. Allowable working stresses in pounds per square inch for all concrete structures except pressure and horseshoe conduits, for which other steel tension and concrete compressive stresses were used under certain loading conditions, are indicated below:

Allowable values for shear, bond, bearing, anchorage, etc., were used as specified in section 878 of the "ASCE Recommended Practice and Standard Specifications for Concrete and Reinforced Concrete, 1940 edition.

1/ By equivalent fluid pressure theory.

APPENDIX D (Continued)

Allowable steel tension and concrete compressive stresses, in pounds per square inch, for conduits are as follows:

The unit stresses, in pounds per square inch, used in the radial gate design

APPENDIX D (Continued)

High-Pressure Gate

The allowable unit stresses, in pounds per square inch, and the factor of safety used in the high-pressure gate design are as follows:

APPENDIX E

Assumed loadings, computed foundation pressures and sliding factors for spillway walls:

0.32

Dry backfill to top of wall; reservoir empty.

4,400

Dry backfill to elevation 3058. 5; basin empty.

Dry backfill above elevation 3038 and saturated
backfill below elevation 3038; water in basin at
elevation 3038.