Concrete Masonry and Hardscapes AssociationConcrete Masonry and Hardscapes AssociationThis program provides a ranking system that rationalizes the site feasibility and selection for permeable pavement. The user answers questions that generate a score up to six prospective sites amenable, marginal or unacceptable as places for permeable pavement. Developed by Applied Research Associates, Inc.
The user can enter construction, maintenance costs and end-of-life costs for interlocking concrete pavement, asphalt and concrete pavements, as well as a discount rate to have the program calculate the life-cycle costs for these pavements. The software allows deterministic or probabilistic analyses of costs and outputs results in tabular and bar graph forms. Default values are provided for initial costs, maintenance costs and intervals which can be easily edited by the user to project-specific conditions. The program can be operated using metric or traditional U.S. units. Developed by Applied Research Associates.
Management of pavements involves periodic condition inspection that translates distresses and severities into pavement condition ratings. This data can be used to develop a pavement condition index (PCI) from 0 to 100 that helps forecast when pavements might need maintenance. Condition surveys and development of PCIs for interlocking concrete pavements rely on ASTM E2840 Standard Practice for Pavement Condition Index Surveys for Interlocking Concrete Roads and Parking Lots. This software program provides a data collection sheet that automatically calculates the PCI for streets. This data can be input into pavement management systems. Developed by Applied Research Associates.
This program enables users to design bases for interlocking concrete pavements. Users can design aggregate, cement or asphalt stabilized, or asphalt bases. The program uses the flexible pavement design methodology in the 1993 AASHTO Guide for Design of Pavement Structures. The user provides soil subgrade and drainage information, anticipated traffic loads as 18,000 lb (80 kN) axle loads up to 10 million, and the base material type. The program outputs base and subbase thicknesses. The user can change default values in the program. Program use must be accompanied by reading ICPI Tech Spec 4 Structural Design of Interlocking Concrete Pavements free on this website and/or purchase ASCE 58-10 Structural Design of Interlocking Concrete Pavement for Municipal Streets and Roadways. The program runs using metric or traditional U.S. units. Download the free programs below:
This sheet provides input values for the formula in ASTM C1781 Standard Test Method for Surface Infiltration Rate of Permeable Unit Pavement Systems that calculates that rate in inches per hour. The test also indicates how long water stands on the surface which can indicate when cleaning should be done to prevent clogging. The sheet provides inputs for 8 lbs (5 kg) of water for the wetting step and 40 lbs (18 kg) for the testing step, thereby providing instant answers.
The CMHA Articulating Concrete Block Design Spreadsheet is a spreadsheet-based calculator tool that can design ACBs by the hydraulic stability method, the shear and velocity method for channels or overtopping, and filter design for ACB systems. Calculations can be performed for any unit configuration, flow velocity, and project conditions. To help designers also compare against riprap a simple riprap design sheet is provided.
The spreadsheet is based on the methodology contained in the CMHA Design Manual for Articulating Concrete Block (ACB) Revetment Systems. Access the Design Manual here
The CMHA Concrete Masonry Unit Strength Method Calculator is a spreadsheet-based calculator tool to aid in determining either:
The calculator provides these values in accordance with either the 2013 or 2016 version of TMS 402/602, Building Code Requirements and Specification for Masonry Structures.
The CMHA Concrete Masonry Sound and Assemblies Properties Calculator is a spreadsheet-based calculator tool to aid in determining a variety of properties of concrete masonry units. The calculator can be used to determine section properties such as net area, moment of inertia, radius of gyration and more based on user-defined inputs. Wall weights are also calculated based on units, grouting schedule, and more. In addition. the calculator can determine Sound Transmission Class (STC) and Outdoor-Indoor Transmission Class (OITC) based on wall weight using the methodology contained in TMS 302, Standard Method for Determining the Sound Transmission Class Rating for Masonry Walls.
The CMHA Masonry Anchor Bolt Design Calculator is a spreadsheet-based calculator tool to aid in the design of anchor bolts used in masonry construction. The spreadsheet can calculate both bent-bar and headed anchor bolts, either in top-mount or face-mount configuration. Design is based on the 2013 version of TMS 402/ACI 530/ASCE 5. Calculations for both allowable stress as well as strength design are provided.
The CMHA R-Value/U-Factor Calculator is a spreadsheet-based calculator tool that determines steady state thermal properties of concrete masonry assemblies. Calculations can be performed for a wide variety of unit configurations, grouting schedules, and insulation types. Both single-wythe and multi-wythe calculations can be performed. The results can be used for determining compliance with energy codes as well as inputs for COMcheck and other energy modeling software.