HIGHWAY ASSESSMENT1
It is the portion of the total vehicle load transmitted to the road through a single axle
Axle load
It provides a stable ‘working platform’ on which to operate construction equipment during construction
Sub-base course
Its primary function is to prevent the development of damaging compressive stresses due to volume changes in the pavement slab, and to prevent excessive pressure being transmitted to adjacent structures
Expansion joints
Its purpose is to provide for an orderly arrangement of the cracking that occurs
Contraction joints
This structure may consist of two layers, designated as the pavement slab and sub-base course
Rigid pavement
The preparation of ____________ includes grading and compaction of the roadbed soils and may include other means of providing optimum support for the pavement structure like drainage control and soil stabilization by mechanical means of by the use of soil stabilizers such as cement, asphalt-based binders, lime and water repellents
Subgrade
It is a measure of the elastic property of soil recognizing certain nonlinear characteristics
Resilient modulus
The _________ is a representation of the damaging effect per pass to a pavement by a type of relative to the damage per pass of a standard axle load (usually the 8,200 kg (80kN) single-axle load)
Load equivalence factor
It is defined as that portion of the road or highway, placed above the subgrade specifically for the support of and to provide a running surface for vehicular traffic
Pavement
These are designed to hold the faces of abutting slabs in firm contact and designed to withstand the maximum tensile forces required to overcome subgrade drag
Tie bars
It used to prevent the formation of irregular longitudinal cracks and may be keyed butt joints or mechanically formed or sawed grooves
Longitudinal joints
The depth of formed or sawed grooves in longitudinal joints should not be less than ____% of the thickness of the pavement slab
25
Determine the thickness of the rigid pavement with a wheel load capacity of 54 kN if the allowable tensile stress of concrete is 1.6 MPa. Neglect the effect of dowels
318
A rigid pavement is to be used to carry a wheel load of 49 kN, the allowable tensile stress of the concrete is 1.4 MPa. Sufficient dowels are used across the joints. Design the thickness of the pavement at the edge
229.13
A rigid pavement is to be used to carry a wheel load of 49 kN, the allowable tensile stress of the concrete is 1.4 MPa. Sufficient dowels are used across the joints. Design the thickness of the pavement at the center
162.02
A flexible pavement having a thickness of 46 mm carries a static wheel load of W. The circular contact has an equivalent radius of 150 mm. If the load W is assumed to be transmitted across a wide are of subgrade at an angle of 45 degrees, compute the value of the wheel load W if the bearing stress of the base is 0.42 MPa
50.72
Solve for the CESAL, PCCP, One-direction, GVW = 43,867 kg, AADT = 67, traffic growth rate = 3%
4,173,311.66